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RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT AND POSSIBLE PERSONAL INJURY.
THE
(1) Disconnect and isolate the battery negative cable. Wait two minutes for the system capacitor to discharge before further service.
(2) Remove the center bezel from the instrument panel. (Refer to 23 - BODY/INSTRUMENT PANEL/ INSTRUMENT PANEL CENTER BEZEL - REMOV- AL).
(3) From the back of the center bezel, remove the three screws that secure the passenger airbag on/off switch and face plate unit to the back of the bezel (Fig. 36).
(4) Remove the passenger airbag on/off switch and
face plate from the center bezel as a unit.
INSTALLATION
Fig.36PassengerAirbagOn/OffSwitchRemove/
Install
1 - CENTER BEZEL 2 - SCREW (3) 3 - SWITCH & PLATE UNIT
RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT AND POSSIBLE PERSONAL INJURY.
(1) Position the passenger airbag on/off switch and face plate unit to the back of the center bezel (Fig. 36).
(2) Install and tighten the three screws that secure the passenger airbag on/off switch face plate to the back of the center bezel. Tighten the screws to 2 N·m (17 in. lbs.).
(3) Reinstall the center bezel onto the instrument panel. (Refer to 23 - BODY/INSTRUMENT PANEL/ INSTRUMENT PANEL CENTER BEZEL - INSTAL- LATION).
(4) Do not reconnect the battery negative cable at this time. The supplemental restraint system verifi- cation test procedure should be performed following service of any supplemental restraint system compo- nent. (Refer to 8 - ELECTRICAL/RESTRAINTS - STANDARD PROCEDURE - VERIFICATION TEST).
WARNING: ON VEHICLES EQUIPPED WITH AIR- BAGS, DISABLE THE SUPPLEMENTAL RESTRAINT SYSTEM BEFORE ATTEMPTING ANY STEERING WHEEL, STEERING COLUMN, DRIVER AIRBAG, PASSENGER AIRBAG, SEAT BELT TENSIONER, SIDE CURTAIN AIRBAG, OR INSTRUMENT PANEL COMPONENT DIAGNOSIS OR SERVICE. DISCON- NECT AND ISOLATE THE BATTERY NEGATIVE (GROUND) CABLE, THEN WAIT TWO MINUTES FOR THE SYSTEM CAPACITOR TO DISCHARGE BEFORE PERFORMING FURTHER DIAGNOSIS OR SERVICE. THIS IS THE ONLY SURE WAY TO DISABLE THE SUPPLEMENTAL RESTRAINT SYSTEM. FAILURE TO TAKE PROPER PRECAUTIONS COULD
THE
REAR CENTER SEAT BELT & RETRACTOR REMOVAL
The rear center seat belt retractor is secured with a single screw to a mounting bracket that includes the unique black, keyed center seat belt lower anchor buckle and the right outboard occupant buckle, but can be removed from the mounting bracket and is serviced separately from the two buckles. The center anchor buckle and the right outboard occupant buckle are serviced as a unit with their mounting bracket. (Refer to 8 - ELECTRICAL/RESTRAINTS/
RESTRAINTS
8O - 40
REAR CENTER SEAT BELT & RETRACTOR (Continued)REAR SEAT BELT BUCKLE - REMOVAL - CEN- TER ANCHOR & RIGHT OUTBOARD).
DR
THAT
IS CUT,
WARNING: DURING AND FOLLOWING ANY SEAT BELT OR CHILD RESTRAINT ANCHOR SERVICE, CAREFULLY INSPECT ALL SEAT BELTS, BUCKLES, MOUNTING HARDWARE, RETRACTORS, TETHER STRAPS, AND ANCHORS FOR PROPER INSTALLA- TION, OPERATION, OR DAMAGE. REPLACE ANY BELT FRAYED, OR TORN. STRAIGHTEN ANY BELT THAT IS TWISTED. TIGHTEN ANY LOOSE FASTENERS. REPLACE ANY BELT THAT HAS A DAMAGED OR INOPERATIVE BUCKLE OR RETRACTOR. REPLACE ANY BELT THAT HAS A BENT OR DAMAGED LATCH PLATE OR ANCHOR PLATE. REPLACE ANY CHILD RESTRAINT ANCHOR OR THE UNIT TO WHICH THE ANCHOR IS INTEGRAL THAT HAS BEEN BENT OR DAMAGED. NEVER ATTEMPT TO REPAIR A SEAT BELT OR CHILD RESTRAINT COMPONENT. ALWAYS REPLACE DAMAGED OR FAULTY SEAT BELT AND CHILD RESTRAINT COMPONENTS WITH THE CORRECT, NEW AND UNUSED REPLACEMENT PARTS LISTED IN THE DAIMLERCHRYSLER MOPAR PARTS CATALOG.
(1) Reach between the rear seat cushion and the rear seat back to access and unbuckle the center seat belt lower anchor latch plate from the unique black, keyed lower anchor buckle. Use an ignition key or a small screwdriver to depress the small white release button on the anchor buckle.
(2) Remove the rear seat from the vehicle. On models with the optional 60/40 split rear bench, only the 60 percent section (right side) of the rear seat must be removed. (Refer to 23 - BODY/SEATS/SEAT - REAR - REMOVAL).
(3) Lift upward on the forward edge of the rear center seat belt bezel at the top of the cab back panel to release the snap features that secure the bezel to the belt bracket (Fig. 37).
(4) Remove the bezel from the webbing of the rear
center seat belt.
(5) Lift the rear center seat belt cover off of the belt bracket at the top of the cab back panel and remove the cover from the webbing of the rear center seat belt.
(6) Remove the two screws that secure the belt bracket of the rear center seat belt to the body bracket on the upper cab back panel reinforcement. (7) Remove the belt bracket of the rear center seat
belt from the body bracket.
(8) Remove the screw that secures the rear center seat belt retractor to the center anchor/right out- board occupant buckle and mounting bracket unit on the rear floor panel near the cab back panel (Fig. 38).
Fig.37RearCenterSeatBelt&RetractorRemove/
Install
1 - CAB BACK PANEL 2 - CENTER SEAT BELT 3 - BEZEL 4 - COVER 5 - BELT BRACKET 6 - SCREW (2) 7 - BODY BRACKET 8 - RETRACTOR 9 - SCREW (2) 10 - CENTER ANCHOR/RIGHT OUTBOARD OCCUPANT BUCKLE & BRACKET UNIT 11 - REAR FLOOR PANEL 12 - LOWER ANCHOR LATCH PLATE
(9) Remove the rear center seat belt retractor from the center anchor/right outboard occupant buckle and mounting bracket unit.
(10) Remove the rear center seat belt and retractor
unit from the vehicle.
INSTALLATION
The rear center seat belt retractor is secured with a single screw to a mounting bracket that includes the unique black, keyed center seat belt lower anchor buckle and the right outboard occupant buckle, but can be removed from the mounting bracket and is serviced separately from the two buckles. The center anchor buckle and the right outboard occupant buckle are serviced as a unit with their mounting bracket. (Refer to 8 - ELECTRICAL/RESTRAINTS/ REAR SEAT BELT BUCKLE - INSTALLATION - CENTER ANCHOR & RIGHT OUTBOARD).
DR REAR CENTER SEAT BELT & RETRACTOR (Continued)
RESTRAINTS
8O - 41
(1) Position the rear center seat belt and retractor unit onto the center anchor/right outboard occupant buckle and mounting bracket unit on the rear floor panel near the base of the cab back panel (Fig. 38). (2) Install and tighten the screw that secures the rear center seat belt retractor bracket to the center anchor/right outboard occupant buckle and mounting bracket unit. Tighten the screw to 40 N·m (29 ft. lbs.).
(3) Position the belt bracket of the rear center seat belt onto the body bracket on the upper cab back panel reinforcement (Fig. 37).
(4) Install and tighten the two screws that secure the belt bracket of the rear center seat belt to the body bracket. Tighten the screws to 20 N·m (15 ft. lbs.).
(5) Lift the webbing of the rear center seat belt and slide the cover over the belt bracket at the top of the cab back panel until it is fully seated.
(6) Route the rear center seat belt bezel over the
webbing of the rear center seat belt.
(7) Position the rear center seat belt bezel over the cover and belt bracket at the top of the cab back panel and engage the rearward snap features of the bezel with the belt bracket. Using hand pressure, press firmly and evenly downward on the front of the bezel until it snaps into place over the cover and belt bracket.
(8) Reinstall the rear seat into the vehicle. On models with the optional 60/40 split rear bench, only the 60 percent section (right side) of the rear seat must be reinstalled. (Refer to 23 - BODY/SEATS/ SEAT - REAR - INSTALLATION).
(9) Reach between the rear seat cushion and the rear seat back to buckle the rear center seat belt lower anchor latch plate to the unique black, keyed lower anchor buckle.
REAR OUTBOARD SEAT BELT & RETRACTOR REMOVAL
The only component of this seat belt and retractor unit that is available for individual service replace- ment is the plastic web stop button that prevents the latch plate from falling to the floor while in the stored position. Refer to the instructions supplied with the service kit for the proper web stop button replacement procedures.
Fig.38RearCenterRetractor&MountingBracket 1 - RIGHT OUTBOARD OCCUPANT BUCKLE 2 - REAR CENTER SEAT BELT 3 - REAR CENTER SEAT BELT RETRACTOR 4 - MOUNTING BRACKET 5 - CENTER ANCHOR BUCKLE 6 - SCREW (1)
THAT
IS CUT,
WARNING: DURING AND FOLLOWING ANY SEAT BELT OR CHILD RESTRAINT ANCHOR SERVICE, CAREFULLY INSPECT ALL SEAT BELTS, BUCKLES, MOUNTING HARDWARE, RETRACTORS, TETHER STRAPS, AND ANCHORS FOR PROPER INSTALLA- TION, OPERATION, OR DAMAGE. REPLACE ANY BELT FRAYED, OR TORN. STRAIGHTEN ANY BELT THAT IS TWISTED. TIGHTEN ANY LOOSE FASTENERS. REPLACE ANY BELT THAT HAS A DAMAGED OR INOPERATIVE BUCKLE OR RETRACTOR. REPLACE ANY BELT THAT HAS A BENT OR DAMAGED LATCH PLATE OR ANCHOR PLATE. REPLACE ANY CHILD RESTRAINT ANCHOR OR THE UNIT TO WHICH THE ANCHOR IS INTEGRAL THAT HAS BEEN BENT OR DAMAGED. NEVER ATTEMPT TO REPAIR A SEAT BELT OR CHILD RESTRAINT COMPONENT. ALWAYS REPLACE DAMAGED OR FAULTY SEAT BELT AND CHILD RESTRAINT COMPONENTS WITH THE CORRECT, NEW AND UNUSED REPLACEMENT PARTS LISTED IN THE DAIMLERCHRYSLER MOPAR PARTS CATALOG.
RESTRAINTS
8O - 42
REAR OUTBOARD SEAT BELT & RETRACTOR (Continued)DR
THAT
IS CUT,
WARNING: DURING AND FOLLOWING ANY SEAT BELT OR CHILD RESTRAINT ANCHOR SERVICE, CAREFULLY INSPECT ALL SEAT BELTS, BUCKLES, MOUNTING HARDWARE, RETRACTORS, TETHER STRAPS, AND ANCHORS FOR PROPER INSTALLA- TION, OPERATION, OR DAMAGE. REPLACE ANY BELT FRAYED, OR TORN. STRAIGHTEN ANY BELT THAT IS TWISTED. TIGHTEN ANY LOOSE FASTENERS. REPLACE ANY BELT THAT HAS A DAMAGED OR INOPERATIVE BUCKLE OR RETRACTOR. REPLACE ANY BELT THAT HAS A BENT OR DAMAGED LATCH PLATE OR ANCHOR PLATE. REPLACE ANY CHILD RESTRAINT ANCHOR OR THE UNIT TO WHICH THE ANCHOR IS INTEGRAL THAT HAS BEEN BENT OR DAMAGED. NEVER ATTEMPT TO REPAIR A SEAT BELT OR CHILD RESTRAINT COMPONENT. ALWAYS REPLACE DAMAGED OR FAULTY SEAT BELT AND CHILD RESTRAINT COMPONENTS WITH THE CORRECT, NEW AND UNUSED REPLACEMENT PARTS LISTED IN THE DAIMLERCHRYSLER MOPAR PARTS CATALOG.
(1) Remove the rear seat from the vehicle. (Refer
to 23 - BODY/SEATS/SEAT - REAR - REMOVAL).
(2) Remove the screw that secures the lower seat belt anchor to the base of the inner C-pillar (Fig. 39). (3) Remove the lower seat belt anchor from the
base of the inner C-pillar.
(4) Unsnap and remove the trim cover from the rear outboard seat belt turning loop to access the screw that secures the turning loop to the upper inner C-pillar. Discard the removed turning loop trim cover as it is not intended for reuse.
(5) Remove the screw that secures the seat belt
turning loop to the C-pillar.
(6) Remove the seat belt turning loop from the
upper inner C-pillar.
(7) Remove the upper and lower trim from the inner C-pillar. (Refer to 23 - BODY/INTERIOR/C- PILLAR UPPER TRIM - REMOVAL) and (Refer to 23 - BODY/INTERIOR/C-PILLAR LOWER TRIM - REMOVAL).
(8) Remove the screw that secures the seat belt
web guide to the inner C-pillar near the belt line.
(9) Remove the seat belt web guide from the inner
C-pillar.
(10) Remove the screw that secures the lower retractor bracket to the lower inner C-pillar below the retractor mounting hole.
Fig.39RearOutboardSeatBelt&Retractor
Remove/Install
1 - C-PILLAR 2 - TRIM PANEL 3 - TURNING LOOP 4 - SCREW 5 - TRIM COVER 6 - SEAT BELT 7 - SCREW 8 - LOWER ANCHOR 9 - SCREW 10 - SCREW 11 - RETRACTOR 12 - WEB GUIDE
(11) Disengage the hook on the upper retractor bracket from the slot in the lower inner C-pillar above the retractor mounting hole.
(12) Remove the rear outboard seat belt and retractor from the retractor mounting hole in the lower inner C-pillar.
INSTALLATION
The only component of this seat belt and retractor unit that is available for individual service replace- ment is the plastic web stop button that prevents the latch plate from falling to the floor while in the stored position. Refer to the instructions supplied with the service kit for the proper web stop button replacement procedures.
DR REAR OUTBOARD SEAT BELT & RETRACTOR (Continued)
RESTRAINTS
8O - 43
THAT
IS CUT,
WARNING: DURING AND FOLLOWING ANY SEAT BELT OR CHILD RESTRAINT ANCHOR SERVICE, CAREFULLY INSPECT ALL SEAT BELTS, BUCKLES, MOUNTING HARDWARE, RETRACTORS, TETHER STRAPS, AND ANCHORS FOR PROPER INSTALLA- TION, OPERATION, OR DAMAGE. REPLACE ANY BELT FRAYED, OR TORN. STRAIGHTEN ANY BELT THAT IS TWISTED. TIGHTEN ANY LOOSE FASTENERS. REPLACE ANY BELT THAT HAS A DAMAGED OR INOPERATIVE BUCKLE OR RETRACTOR. REPLACE ANY BELT THAT HAS A BENT OR DAMAGED LATCH PLATE OR ANCHOR PLATE. REPLACE ANY CHILD RESTRAINT ANCHOR OR THE UNIT TO WHICH THE ANCHOR IS INTEGRAL THAT HAS BEEN BENT OR DAMAGED. NEVER ATTEMPT TO REPAIR A SEAT BELT OR CHILD RESTRAINT COMPONENT. ALWAYS REPLACE DAMAGED OR FAULTY SEAT BELT AND CHILD RESTRAINT COMPONENTS WITH THE CORRECT, NEW AND UNUSED REPLACEMENT PARTS LISTED IN THE DAIMLERCHRYSLER MOPAR PARTS CATALOG.
(1) Position the rear outboard seat belt and retrac- tor to the retractor mounting hole in the lower inner C-pillar (Fig. 39).
(2) Engage the hook on the upper retractor bracket into the slot in the lower inner C-pillar above the retractor mounting hole.
(3) Install and tighten the screw that secures the lower retractor bracket to the lower inner C-pillar below the retractor mounting hole. Tighten the screw to 40 N·m (29 ft. lbs.).
(4) Position the seat belt web guide to the inner
C-pillar near the belt line.
(5) Install and tighten the screw that secures the seat belt web guide to the inner C-pillar. Tighten the screw to 2 N·m (20 in. lbs.).
(6) Reinstall the upper and lower trim onto the inner C-pillar. (Refer to 23 - BODY/INTERIOR/C- PILLAR UPPER TRIM - INSTALLATION) and (Refer to 23 - BODY/INTERIOR/C-PILLAR LOWER TRIM - INSTALLATION).
(7) Position the seat belt turning loop onto the
upper inner C-pillar.
(8) Install and tighten the screw that secures the seat belt turning loop to the C-pillar. Tighten the screw to 40 N·m (29 ft. lbs.).
(9) Engage the lower snap features of the new trim cover over the rear outboard seat belt turning loop and, using hand pressure, press firmly and evenly on the top of the trim cover until it snaps into place.
(10) Position the lower seat belt anchor to the base
of the inner C-pillar.
(11) Install and tighten the screw that secures the lower seat belt anchor to the base of the inner C-pil- lar. Tighten the screw to 40 N·m (29 ft. lbs.).
(12) Reinstall the rear seat into the vehicle. (Refer to 23 - BODY/SEATS/SEAT - REAR - INSTALLA- TION).
REAR SEAT BELT BUCKLE
REMOVAL
REMOVAL - CENTER & LEFT OUTBOARD
THAT
IS CUT,
WARNING: DURING AND FOLLOWING ANY SEAT BELT OR CHILD RESTRAINT ANCHOR SERVICE, CAREFULLY INSPECT ALL SEAT BELTS, BUCKLES, MOUNTING HARDWARE, RETRACTORS, TETHER STRAPS, AND ANCHORS FOR PROPER INSTALLA- TION, OPERATION, OR DAMAGE. REPLACE ANY BELT FRAYED, OR TORN. STRAIGHTEN ANY BELT THAT IS TWISTED. TIGHTEN ANY LOOSE FASTENERS. REPLACE ANY BELT THAT HAS A DAMAGED OR INOPERATIVE BUCKLE OR RETRACTOR. REPLACE ANY BELT THAT HAS A BENT OR DAMAGED LATCH PLATE OR ANCHOR PLATE. REPLACE ANY CHILD RESTRAINT ANCHOR OR THE UNIT TO WHICH THE ANCHOR IS INTEGRAL THAT HAS BEEN BENT OR DAMAGED. NEVER ATTEMPT TO REPAIR A SEAT BELT OR CHILD RESTRAINT COMPONENT. ALWAYS REPLACE DAMAGED OR FAULTY SEAT BELT AND CHILD RESTRAINT COMPONENTS WITH THE CORRECT, NEW AND UNUSED REPLACEMENT PARTS LISTED IN THE DAIMLERCHRYSLER MOPAR PARTS CATALOG.
(1) Lift up the rear seat cushion into its stowed
position against the rear seat back.
(2) Remove the screw that secures either the cen- ter or the left outboard occupant buckle unit to the rear floor panel near the base of the cab back panel (Fig. 40). On models with the optional 60/40 split rear bench, the screw that secures the buckle unit also secures one of the rear seat mounting brackets to the rear floor panel.
(3) Remove the center or the left outboard occu- pant buckle unit from the rear floor panel or from the rear seat mounting bracket.
REMOVAL - CENTER ANCHOR & RIGHT OUTBOARD
The unique black, keyed center seat belt lower anchor buckle and the right outboard occupant buckle are serviced as a unit with their mounting bracket. The rear center seat belt retractor is also secured to the mounting bracket with these two buckles, but can be removed from the mounting bracket and is serviced separately from the two buck-
RESTRAINTS
8O - 44
REAR SEAT BELT BUCKLE (Continued)DR
PARTS LISTED IN THE DAIMLERCHRYSLER MOPAR PARTS CATALOG.
(1) Reach between the rear seat cushion and the rear seat back to access and unbuckle the rear center seat belt lower anchor latch plate from the unique black, keyed lower anchor buckle. Use an ignition key or a small screwdriver to depress the small white release button on the anchor buckle.
(2) Remove the rear seat from the vehicle. On models with the optional 60/40 split rear bench, only the 60 percent section (right side) of the rear seat must be removed. (Refer to 23 - BODY/SEATS/SEAT - REAR - REMOVAL).
(3) Remove the screw that secures the rear center seat belt retractor to the center anchor/right out- board occupant buckle and mounting bracket unit on the rear floor panel near the cab back panel (Fig. 41).
Fig.40RearSeatBeltBuckleRemove/Install
1 - CAB BACK PANEL 2 - CENTER SEAT BELT RETRACTOR 3 - SCREW (4) 4 - LEFT OUTBOARD OCCUPANT BUCKLE UNIT 5 - CENTER OCCUPANT BUCKLE UNIT 6 - CENTER ANCHOR/RIGHT OUTBOARD OCCUPANT BUCKLE & BRACKET UNIT 7 - REAR FLOOR PANEL
les. (Refer to 8 - ELECTRICAL/RESTRAINTS/REAR CENTER SEAT BELT & RETRACTOR - REMOVAL).
THAT
IS CUT,
WARNING: DURING AND FOLLOWING ANY SEAT BELT OR CHILD RESTRAINT ANCHOR SERVICE, CAREFULLY INSPECT ALL SEAT BELTS, BUCKLES, MOUNTING HARDWARE, RETRACTORS, TETHER STRAPS, AND ANCHORS FOR PROPER INSTALLA- TION, OPERATION, OR DAMAGE. REPLACE ANY BELT FRAYED, OR TORN. STRAIGHTEN ANY BELT THAT IS TWISTED. TIGHTEN ANY LOOSE FASTENERS. REPLACE ANY BELT THAT HAS A DAMAGED OR INOPERATIVE BUCKLE OR RETRACTOR. REPLACE ANY BELT THAT HAS A BENT OR DAMAGED LATCH PLATE OR ANCHOR PLATE. REPLACE ANY CHILD RESTRAINT ANCHOR OR THE UNIT TO WHICH THE ANCHOR IS INTEGRAL THAT HAS BEEN BENT OR DAMAGED. NEVER ATTEMPT TO REPAIR A SEAT BELT OR CHILD RESTRAINT COMPONENT. ALWAYS REPLACE DAMAGED OR FAULTY SEAT BELT AND CHILD RESTRAINT COMPONENTS WITH THE CORRECT, NEW AND UNUSED REPLACEMENT
Fig.41RearCenterRetractor&MountingBracket 1 - RIGHT OUTBOARD OCCUPANT BUCKLE 2 - REAR CENTER SEAT BELT 3 - REAR CENTER SEAT BELT RETRACTOR 4 - MOUNTING BRACKET 5 - CENTER ANCHOR BUCKLE 6 - SCREW (1)
(4) Remove the rear center seat belt retractor from the center anchor/right outboard occupant buckle and mounting bracket unit.
(5) Remove the two screws that secure the center anchor/right outboard occupant buckle and mounting bracket unit to the rear floor panel near the base of the cab back panel (Fig. 42).
DR REAR SEAT BELT BUCKLE (Continued)
RESTRAINTS
8O - 45
THAT
IS CUT,
STRAPS, AND ANCHORS FOR PROPER INSTALLA- TION, OPERATION, OR DAMAGE. REPLACE ANY BELT FRAYED, OR TORN. STRAIGHTEN ANY BELT THAT IS TWISTED. TIGHTEN ANY LOOSE FASTENERS. REPLACE ANY BELT THAT HAS A DAMAGED OR INOPERATIVE BUCKLE OR RETRACTOR. REPLACE ANY BELT THAT HAS A BENT OR DAMAGED LATCH PLATE OR ANCHOR PLATE. REPLACE ANY CHILD RESTRAINT ANCHOR OR THE UNIT TO WHICH THE ANCHOR IS INTEGRAL THAT HAS BEEN BENT OR DAMAGED. NEVER ATTEMPT TO REPAIR A SEAT BELT OR CHILD RESTRAINT COMPONENT. ALWAYS REPLACE DAMAGED OR FAULTY SEAT BELT AND CHILD RESTRAINT COMPONENTS WITH THE CORRECT, NEW AND UNUSED REPLACEMENT PARTS LISTED IN THE DAIMLERCHRYSLER MOPAR PARTS CATALOG.
(1) Position the center or the left outboard occu- pant buckle unit onto the rear floor panel or onto the rear seat mounting bracket near the base of the cab back panel (Fig. 40). On models with the optional 60/40 split rear bench, the screw that secures the buckle unit also secures one of the rear seat mount- ing brackets to the rear floor panel.
(2) Install and tighten the screw that secures the center or the left outboard occupant buckle unit to the rear floor panel. Tighten the screw to 40 N·m (29
ft. lbs.).(3) Lower the rear seat cushion back to its normal
seating position.
INSTALLATION - CENTER ANCHOR & RIGHT OUTBOARD
The unique black, keyed center seat belt lower anchor buckle and the right outboard occupant buckle are serviced as a unit with their mounting bracket. The rear center seat belt retractor is also secured to the mounting bracket with these two buckles, but can be removed from the mounting bracket and is serviced separately from the two buck- les. (Refer to 8 - ELECTRICAL/RESTRAINTS/REAR CENTER SEAT BELT & RETRACTOR - INSTALLA- TION).
Fig.42RearSeatBeltBuckleRemove/Install
1 - CAB BACK PANEL 2 - CENTER SEAT BELT RETRACTOR 3 - SCREW (4) 4 - LEFT OUTBOARD OCCUPANT BUCKLE UNIT 5 - CENTER OCCUPANT BUCKLE UNIT 6 - CENTER ANCHOR/RIGHT OUTBOARD OCCUPANT BUCKLE & BRACKET UNIT 7 - REAR FLOOR PANEL
(6) Remove the center anchor/right outboard occu- pant buckle and mounting bracket unit from the rear floor panel.
INSTALLATION
INSTALLATION - CENTER & LEFT OUTBOARD
WARNING: DURING AND FOLLOWING ANY SEAT BELT OR CHILD RESTRAINT ANCHOR SERVICE, CAREFULLY INSPECT ALL SEAT BELTS, BUCKLES, MOUNTING HARDWARE, RETRACTORS, TETHER
RESTRAINTS
8O - 46
REAR SEAT BELT BUCKLE (Continued)DR
THAT
IS CUT,
WARNING: DURING AND FOLLOWING ANY SEAT BELT OR CHILD RESTRAINT ANCHOR SERVICE, CAREFULLY INSPECT ALL SEAT BELTS, BUCKLES, MOUNTING HARDWARE, RETRACTORS, TETHER STRAPS, AND ANCHORS FOR PROPER INSTALLA- TION, OPERATION, OR DAMAGE. REPLACE ANY BELT FRAYED, OR TORN. STRAIGHTEN ANY BELT THAT IS TWISTED. TIGHTEN ANY LOOSE FASTENERS. REPLACE ANY BELT THAT HAS A DAMAGED OR INOPERATIVE BUCKLE OR RETRACTOR. REPLACE ANY BELT THAT HAS A BENT OR DAMAGED LATCH PLATE OR ANCHOR PLATE. REPLACE ANY CHILD RESTRAINT ANCHOR OR THE UNIT TO WHICH THE ANCHOR IS INTEGRAL THAT HAS BEEN BENT OR DAMAGED. NEVER ATTEMPT TO REPAIR A SEAT BELT OR CHILD RESTRAINT COMPONENT. ALWAYS REPLACE DAMAGED OR FAULTY SEAT BELT AND CHILD RESTRAINT COMPONENTS WITH THE CORRECT, NEW AND UNUSED REPLACEMENT PARTS LISTED IN THE DAIMLERCHRYSLER MOPAR PARTS CATALOG.
(1) Position the center anchor/right outboard occu- pant buckle and mounting bracket unit onto the rear floor panel near the base of the cab back panel (Fig. 42).
(2) Install and tighten the two screws that secure the center anchor/right outboard occupant buckle and mounting bracket unit to the rear floor panel. Tighten the screws to 40 N·m (29 ft. lbs.).
(3) Position the rear center seat belt retractor onto the center anchor/right outboard occupant buckle and mounting bracket unit (Fig. 41).
(4) Install and tighten the screw that secures the rear center seat belt retractor to the center anchor/ right outboard occupant buckle and mounting bracket unit. Tighten the screw to 40 N·m (29 ft. lbs.).
(5) Reinstall the rear seat into the vehicle. On models with the optional 60/40 split rear bench, only the 60 percent section (right side) of the rear seat must be reinstalled. (Refer to 23 - BODY/SEATS/ SEAT - REAR - INSTALLATION).
(6) Reach between the rear seat cushion and the rear seat back to access and buckle the rear center seat belt lower anchor latch plate to the unique black, keyed lower anchor buckle.
SEAT BELT SWITCH DESCRIPTION
The seat belt switch is a small, normally open, sin- gle pole, single throw, contact, momentary switch. Only one seat belt switch is installed in the vehicle, and it is integral to the buckle of the driver located on the side front seat belt buckle-half,
leaf
Fig.43SeatBeltSwitch
1 - DRIVER SIDE FRONT OUTBOARD SEAT BELT BUCKLE 2 - SEAT CUSHION 3 - PIGTAIL WIRE 4 - INBOARD SEAT TRACK 5 - SCREW
inboard side of the driver side front seat track (Fig. 43). The seat belt switch is connected to the vehicle electrical system through a two-wire pigtail wire and connector on the seat belt buckle-half, which is con- nected to a wire harness connector and take out of the seat wire harness routed beneath the driver side front seat cushion in the passenger compartment.
The seat belt switch cannot be adjusted or repaired and, if faulty or damaged, the entire driver side front seat belt buckle-half unit must be replaced.
OPERATION
The seat belt switch is designed to control a path to ground for the seat belt switch sense input of the ElectroMechanical Instrument Cluster (EMIC). When the driver side front seat belt tip-half is inserted into the seat belt buckle, the switch closes the path to ground; and, when the driver side front seat belt tip- half is removed from the seat belt buckle, the switch opens the ground path. The switch is actuated by the latch mechanism within the seat belt buckle.
The seat belt switch is connected in series between ground and the seat belt switch sense input of the instrument cluster. The seat belt switch receives ground at all times through its pigtail wire connec- tion to the seat wire harness from a take out of the body wire harness. An eyelet terminal connector on the body wire harness ground take out is secured beneath a ground screw on the left cowl side inner panel, beneath the instrument panel. The seat belt switch may de diagnosed using conventional diagnos- tic tools and methods.
DR SEAT BELT SWITCH (Continued) DIAGNOSIS AND TESTING - SEAT BELT SWITCH
Refer to the appropriate wiring information. The wiring information includes wiring diagrams, proper wire and connector repair procedures, details of wire harness routing and retention, connector pin-out information and location views for the various wire harness connectors, splices and grounds.
WARNING: ON VEHICLES EQUIPPED WITH AIR- BAGS, DISABLE THE SUPPLEMENTAL RESTRAINT SYSTEM BEFORE ATTEMPTING ANY STEERING WHEEL, STEERING COLUMN, DRIVER AIRBAG, PASSENGER AIRBAG, SEAT BELT TENSIONER, SIDE CURTAIN AIRBAG, OR INSTRUMENT PANEL COMPONENT DIAGNOSIS OR SERVICE. DISCON- NECT AND ISOLATE THE BATTERY NEGATIVE (GROUND) CABLE, THEN WAIT TWO MINUTES FOR THE SYSTEM CAPACITOR TO DISCHARGE BEFORE PERFORMING FURTHER DIAGNOSIS OR SERVICE. THIS IS THE ONLY SURE WAY TO DISABLE THE SUPPLEMENTAL RESTRAINT SYSTEM. FAILURE TO TAKE PROPER PRECAUTIONS COULD RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT AND POSSIBLE PERSONAL INJURY.
THE
(1) Disconnect and isolate the battery negative cable. Disconnect the seat belt switch pigtail wire connector from the seat wire harness connector for the seat belt switch on the inboard side of the driver side front seat forward of the seat belt buckle-half anchor. Check for continuity between the seat belt switch sense circuit and the ground circuit cavities of the seat belt switch pigtail wire connector. There should be continuity with the seat belt buckled, and no continuity with the seat belt unbuckled. If OK, go to Step 2. If not OK, replace the faulty front seat belt buckle-half assembly.
(2) Check for continuity between the ground cir- cuit cavity in the seat wire harness connector for the seat belt switch and a good ground. There should be continuity. If OK, go to Step 3. If not OK, repair the open ground circuit to ground (G301) as required.
(3) Remove the instrument cluster from the instru- ment panel. Check for continuity between the seat belt switch sense circuit cavity of the seat wire har- ness connector for the seat belt switch and a good ground. There should be no continuity. If OK, go to Step 4. If not OK, repair the shorted seat belt switch sense circuit between the seat belt switch and the instrument cluster as required.
(4) Check for continuity between the seat belt switch sense circuit cavities of the seat wire harness connector for the seat belt switch and the instrument panel wire harness connector (Connector C2) for the instrument cluster. There should be continuity. If
RESTRAINTS
8O - 47
OK, test and replace the faulty instrument cluster as required. (Refer to 8 - ELECTRICAL/INSTRUMENT CLUSTER - DIAGNOSIS AND TESTING). If not OK, repair the open seat belt switch sense circuit between the seat belt switch and the instrument cluster as required.
SEAT BELT TENSIONER DESCRIPTION
Fig.44SeatBeltTensioner
1 - TENSIONER HOUSING OR CHAMBER 2 - GAS GENERATOR 3 - TENSIONER PIGTAIL WIRE 4 - SPOOL 5 - TENSION REDUCER (DRIVER SIDE ON STANDARD CAB ONLY) 6 - REDUCER CONNECTOR RECEPTACLE 7 - RETRACTOR LOCKING MECHANISM COVER
Front outboard seating position seat belt tension- ers supplement the driver and passenger airbags for all versions of this model (Fig. 44). The seat belt ten- sioner is integral to the front outboard seat belt and retractor unit, which is secured to the inner B-pillar on the right and left sides of the vehicle. The retrac- tor is concealed beneath the molded plastic inner B-pillar trim. The seat belt tensioner consists prima- rily of a die cast aluminum tensioner housing or chamber, a mechanical clutch unit, a tape-like metal strip, a pair of cutters, a pyrotechnically activated gas generator, and a short pigtail wire. All of these components are located on one side of the retractor spool on the outside of the retractor housing. The seat belt tensioner is controlled by the Airbag Control Module (ACM) and is connected to the vehicle elec- trical system through a dedicated take out of the body wire harness by a keyed and latching molded plastic connector insulator to ensure a secure connec- tion.
RESTRAINTS
8O - 48
SEAT BELT TENSIONER (Continued)The seat belt tensioner cannot be repaired and, if faulty or damaged, the entire outboard front seat belt and retractor unit must be replaced. If the front air- bags have been deployed, the seat belt tensioners have also been deployed. The seat belt tensioner is not intended for reuse and must be replaced follow- ing a deployment. A locked retractor that will not allow the seat belt webbing to be retracted or extracted is a sure indication that the seat belt ten- sioner has been deployed and requires replacement. (Refer to 8 - ELECTRICAL/RESTRAINTS/FRONT OUTBOARD SEAT BELT & RETRACTOR - REMOV- AL).
OPERATION
DR
illuminate the airbag indicator in the ElectroMe- chanical Instrument Cluster (EMIC) and store a Diagnostic Trouble Code (DTC) for any fault that is detected. For proper diagnosis of the seat belt ten- sioners, a DRBIIIt scan tool is required. Refer to the appropriate diagnostic information.
SEAT BELT TENSION REDUCER DESCRIPTION
The seat belt tensioners are deployed by a signal generated by the Airbag Control Module (ACM) through the driver and passenger seat belt tensioner line 1 and line 2 (or squib) circuits. When the ACM sends the proper electrical signal to the tensioners, the electrical energy generates enough heat to ini- tiate a small pyrotechnic gas generator. The gas gen- erator is installed at the top of the tensioner housing which contains a long metal tape that is routed through two chambers within the housing. Each end of the tape is wound around the outer sleeve of a mechanical clutch mechanism secured to one end of the torsion bar upon which the retractor spool is secured. As the gas expands, it is directed against the metal tape within the two chambers of the hous- ing causing the tape to unwind from the clutch sleeve. As the clutch rotates it engages the torsion bar, which drives the seat belt retractor spool causing the slack to be removed from the seat belt.
Once a seat belt tensioning sequence has been completed, the forward momentum of the occupant results in deformation of the torsion bar. As the tor- sion bar deforms it allows the seat belt webbing to unwind from the retractor spool, which causes the metal tape to be wound back onto the clutch sleeve until it is pulled tight against two cutter blades within the housing, which immediately cut the metal tape.
Removing excess slack from the seat belt not only keeps the occupant properly positioned for an airbag deployment following a frontal impact of the vehicle, but also helps to reduce injuries that the occupant might experience in these situations as a result of a harmful contact with the steering wheel, steering col- umn, instrument panel and/or windshield. The tor- sion bar is designed to deform in order to control the loading being applied to the occupant by the seat belt during a frontal impact, further reducing the poten- tial for occupant injuries.
The ACM monitors the condition of the seat belt tensioners through circuit resistance. The ACM will
Fig.45SeatBeltTensionReducer
1 - TENSIONER HOUSING OR CHAMBER 2 - GAS GENERATOR 3 - TENSIONER PIGTAIL WIRE 4 - SPOOL 5 - TENSION REDUCER (DRIVER SIDE ON STANDARD CAB ONLY) 6 - REDUCER CONNECTOR RECEPTACLE
A seat belt tension reducer is standard equipment for the driver side front outboard seat belt on stan- dard cab versions of this model (Fig. 45). The tension reducer is integral to the driver side front outboard seat belt and retractor unit, which is secured to the inner B-pillar on the left side of the vehicle. The retractor is concealed beneath the molded plastic inner B-pillar trim. The seat belt tension reducer consists primarily of a 12-volt Direct Current (DC) solenoid and an integral connector receptacle that is located on the forward facing end housing of the retractor. The seat belt tension reducer is controlled by a battery current output of the ignition switch and a ground path provided by the seat belt switch, and is connected to the vehicle electrical system through a dedicated take out of the body wire harness by a keyed and latching molded plastic connector insula- tor to ensure a secure connection.
The seat belt tension reducer cannot be repaired and, if faulty or damaged, the entire driver side front
DR SEAT BELT TENSION REDUCER (Continued)
outboard seat belt and retractor unit must be replaced. (Refer to 8 - ELECTRICAL/RESTRAINTS/ FRONT OUTBOARD SEAT BELT & RETRACTOR - REMOVAL).
OPERATION
The seat belt tension reducer is controlled by a ground signal received from the seat belt switch on the seat belt switch sense circuit and a battery cur- rent signal received from the ignition switch on the fused ignition switch output (run-accessory) circuit. When the seat belt switch is closed (the driver side front seat belt is fastened) and the ignition switch is in the On or Accessory positions, the seat belt tension reducer solenoid is energized. When the solenoid is energized, it actuates a mechanism within the driver side front outboard seat belt retractor to reduce the normal recoil spring tension exerted by the retractor spool, which is designed to reel in the seat belt web- bing onto the spool. When the driver side seat belt is unbuckled or if the ignition switch is turned to any position except On or Accessory, the tension reducer solenoid is de-energized and the normal recoil spring tension of the retractor is restored.
The action of the seat belt tension reducer results in improved seat belt comfort for the driver. Reducing the seat belt retractor recoil spring tension is desir- able on standard cab models of this vehicle and not on the quad cab model due to the different mounting position required for the seat belt turning loop on the B-pillar relative to the driver’s seat position on the standard cab model. The seat belt tension reducer may be diagnosed using conventional diagnostic tools and methods.
DIAGNOSIS AND TESTING - SEAT BELT TENSION REDUCER
Refer to the appropriate wiring information. The wiring information includes wiring diagrams, proper wire and connector repair procedures, details of wire harness routing and retention, connector pin-out information and location views for the various wire harness connectors, splices and grounds.
WARNING: ON VEHICLES EQUIPPED WITH AIR- BAGS, DISABLE THE SUPPLEMENTAL RESTRAINT
RESTRAINTS
8O - 49
SYSTEM BEFORE ATTEMPTING ANY STEERING WHEEL, STEERING COLUMN, DRIVER AIRBAG, PASSENGER AIRBAG, SEAT BELT TENSIONER, SIDE CURTAIN AIRBAG, OR INSTRUMENT PANEL COMPONENT DIAGNOSIS OR SERVICE. DISCON- NECT AND ISOLATE THE BATTERY NEGATIVE (GROUND) CABLE, THEN WAIT TWO MINUTES FOR THE SYSTEM CAPACITOR TO DISCHARGE BEFORE PERFORMING FURTHER DIAGNOSIS OR SERVICE. THIS IS THE ONLY SURE WAY TO DISABLE THE SUPPLEMENTAL RESTRAINT SYSTEM. FAILURE TO TAKE PROPER PRECAUTIONS COULD RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT AND POSSIBLE PERSONAL INJURY.
THE
(1) Disconnect and isolate the battery negative cable. Disconnect the body wire harness connector for the seat belt tension reducer from the tension reducer connector receptacle on the driver side front outboard seat belt and retractor unit. Using an ohm- meter, measure the resistance between the seat belt switch sense circuit terminal pin and the fused igni- tion switch output (run-accessory) circuit terminal pin in the tension reducer connector receptacle on the retractor. Resistance through the tension reducer solenoid coil should be 53 ohms at 20° C (68° F). If OK, go to Step 2. If not OK, replace the faulty driver side front outboard seat belt and retractor unit.
(2) Check for continuity between the seat belt switch sense circuit cavity of the body wire harness connector for the seat belt tension reducer and a good ground. There should be continuity with the driver side front seat belt buckled, and no continuity with the driver side front seat belt unbuckled. If OK, go to Step 3. If not OK, repair the shorted or open seat belt switch sense circuit between the tension reducer and the seat belt switch as required.
(3) Reconnect the battery negative cable. Check for battery current at the fused ignition switch output (run-accessory) circuit of the body wire harness con- nector for the seat belt tension reducer. There should be battery current with the ignition switch in the On or Accessory positions, and no battery current with the ignition switch in any other position. If not OK, repair the shorted or open fused ignition switch out- put circuit between the tension reducer and the ignition switch as required.
(run-accessory)
8O - 50
RESTRAINTS
DR
SEAT BELT TURNING LOOP ADJUSTER REMOVAL
THAT
IS CUT,
WARNING: DURING AND FOLLOWING ANY SEAT BELT OR CHILD RESTRAINT ANCHOR SERVICE, CAREFULLY INSPECT ALL SEAT BELTS, BUCKLES, MOUNTING HARDWARE, RETRACTORS, TETHER STRAPS, AND ANCHORS FOR PROPER INSTALLA- TION, OPERATION, OR DAMAGE. REPLACE ANY BELT FRAYED, OR TORN. STRAIGHTEN ANY BELT THAT IS TWISTED. TIGHTEN ANY LOOSE FASTENERS. REPLACE ANY BELT THAT HAS A DAMAGED OR INOPERATIVE BUCKLE OR RETRACTOR. REPLACE ANY BELT THAT HAS A BENT OR DAMAGED LATCH PLATE OR ANCHOR PLATE. REPLACE ANY CHILD RESTRAINT ANCHOR OR THE UNIT TO WHICH THE ANCHOR IS INTEGRAL THAT HAS BEEN BENT OR DAMAGED. NEVER ATTEMPT TO REPAIR A SEAT BELT OR CHILD RESTRAINT COMPONENT. ALWAYS REPLACE DAMAGED OR FAULTY SEAT BELT AND CHILD RESTRAINT COMPONENTS WITH THE CORRECT, NEW AND UNUSED REPLACEMENT PARTS LISTED IN THE DAIMLERCHRYSLER MOPAR PARTS CATALOG.
(1) Unsnap and remove the trim cover from the front outboard seat belt turning loop to access the screw that secures the turning loop to the height adjuster on the upper inner B-pillar. Discard the removed turning loop trim cover as it is not intended for reuse.
(2) Remove the screw that secures the seat belt
turning loop to the height adjuster.
(3) Remove the front seat belt turning loop from
the height adjuster.
(4) Remove the upper trim from the inner B-pillar. (Refer to 23 - BODY/INTERIOR/B-PILLAR UPPER TRIM - REMOVAL).
(5) Loosen the two screws that secure the seat belt turning loop height adjuster far enough to remove the adjuster from the upper B-pillar (Fig. 46).
(6) Disengage the tab near the lower end of the seat belt turning loop height adjuster from the slot in the sheet metal and remove the adjuster from the inner B-pillar.
INSTALLATION
WARNING: DURING AND FOLLOWING ANY SEAT BELT OR CHILD RESTRAINT ANCHOR SERVICE, CAREFULLY INSPECT ALL SEAT BELTS, BUCKLES, MOUNTING HARDWARE, RETRACTORS, TETHER STRAPS, AND ANCHORS FOR PROPER INSTALLA-
Fig.46SeatBeltTurningLoopAdjusterRemove/
Install
1 - B-PILLAR 2 - ADJUSTER 3 - SCREW (2) 4 - GRAB HANDLE BRACKET (QUAD CAB ONLY)
THAT
IS CUT,
TION, OPERATION, OR DAMAGE. REPLACE ANY BELT FRAYED, OR TORN. STRAIGHTEN ANY BELT THAT IS TWISTED. TIGHTEN ANY LOOSE FASTENERS. REPLACE ANY BELT THAT HAS A DAMAGED OR INOPERATIVE BUCKLE OR RETRACTOR. REPLACE ANY BELT THAT HAS A BENT OR DAMAGED LATCH PLATE OR ANCHOR PLATE. REPLACE ANY CHILD RESTRAINT ANCHOR OR THE UNIT TO WHICH THE ANCHOR IS INTEGRAL THAT HAS BEEN BENT OR DAMAGED. NEVER ATTEMPT TO REPAIR A SEAT BELT OR CHILD RESTRAINT COMPONENT. ALWAYS REPLACE DAMAGED OR FAULTY SEAT BELT AND CHILD RESTRAINT COMPONENTS WITH THE CORRECT, NEW AND UNUSED REPLACEMENT PARTS LISTED IN THE DAIMLERCHRYSLER MOPAR PARTS CATALOG.
(1) Position the front
seat belt
turning loop
adjuster to the inner B-pillar (Fig. 46).
(2) Engage the tab near the lower end of the seat belt turning loop height adjuster into the slot in the sheet metal of the inner B-pillar.
(3) Hand tighten the lower of the two screws that secure the seat belt turning loop height adjuster to the upper B-pillar far enough to keep the tab on the lower end of the adjuster engaged in the B-pillar slot. (4) Install the upper screw that secures the seat belt turning loop height adjuster to the upper B-pil- lar, then tighten both the upper and lower screws to 40 N·m (29 ft. lbs.).
(5) Reinstall the upper trim onto the inside of the B-pillar. (Refer to 23 - BODY/INTERIOR/B-PILLAR UPPER TRIM - INSTALLATION).
DR SEAT BELT TURNING LOOP ADJUSTER (Continued)
RESTRAINTS
8O - 51
(6) Position the seat belt turning loop onto the
height adjuster on the upper inner B-pillar.
(7) Install and tighten the screw that secures the seat belt turning loop to the height adjuster. Tighten the screw to 40 N·m (29 ft. lbs.).
(8) Engage the lower snap features of the new trim cover over the front outboard seat belt turning loop and, using hand pressure, press firmly and evenly on the top of the trim cover until it snaps into place.
SIDE CURTAIN AIRBAG DESCRIPTION
Fig.47SRSLogo
Optional side curtain airbags are available for this model when it is also equipped with dual front air- bags. These airbags are passive, inflatable, Supple- mental Restraint System (SRS) components, and vehicles with this equipment can be readily identified by a molded identification trim button with the “SRS - AIRBAG” logo located on the headliner above each A-pillar, and above each B-pillar on quad cab models (Fig. 47). This system is designed to reduce injuries to the vehicle occupants in the event of a side impact collision.
Vehicles equipped with side curtain airbags have two individually controlled curtain airbag units. These airbag units are concealed and mounted above the headliner where they are each secured to one of the roof side rails (Fig. 48). Each folded airbag cush- ion is contained within a long extruded plastic chan- nel that extends along the roof rail from the A-pillar at the front of the vehicle to just behind the B-pillar on standard cab models, and to just behind the C-pil- lar on quad cab models. A tether extends down the A-pillar from the front of the airbag cushion, where it is retained to the pillar with plastic push-in routing clips and it is secured to the base of the A-pillar near the belt line with a screw.
Fig.48SideCurtainAirbag
1 - WIRE HARNESS CONNECTOR 2 - B-PILLAR (STD CAB) OR C-PILLAR (QUAD CAB) 3 - INFLATOR 4 - MANIFOLD 5 - ROOF SIDE RAIL 6 - A-PILLAR 7 - TETHER 8 - CHANNEL
The hybrid-type inflator for each airbag is secured to the roof rail at the rear of the airbag unit behind the B-pillar (standard cab) or C-pillar (quad cab), and is connected to the airbag cushion by a long tubular manifold. The inflator bracket and the airbag cushion channel are located with plastic push-in fasteners to the roof rail, then secured with screws to spring nuts located in the roof rail. A two-wire take out of the body wire harness with a keyed and latched connec- tor insulator connects directly to an integral recepta- cle on the inflator initiator.
The side curtain airbag unit cannot be adjusted or repaired and must be replaced if deployed, faulty, or in any way damaged. Once a side curtain airbag has been deployed, the complete airbag unit, the head- liner, the upper A, B, and C-pillar trim, and all other visibly damaged components must be replaced.
OPERATION
Each side curtain airbag is deployed individually by an electrical signal generated by the left or right Side Impact Airbag Control Module (SIACM) to which it is connected through left or right curtain airbag line 1 and line 2 (or squib) circuits. The hybrid-type inflator assembly for each airbag con- tains a small canister of highly compressed inert gas. When the SIACM sends the proper electrical signal to the airbag inflator, the electrical energy creates enough heat to ignite chemical pellets within the inflator. Once ignited, these chemicals burn rapidly and produce the pressure necessary to rupture a con- tainment disk in the inert gas canister. The inflator
RESTRAINTS
8O - 52
SIDE CURTAIN AIRBAG (Continued)and inert gas canister are sealed and connected to a tubular manifold so that all of the released gas is directed into the folded curtain airbag cushion, caus- ing the cushion to inflate.
As the airbag cushion inflates it will drop down from the roof rail between the edge of the headliner and the side glass/body pillars to form a curtain-like cushion to protect the vehicle occupants during a side impact collision. The front tether keeps the front por- tion of the bag taut, thus ensuring that the bag will deploy in the proper position. Following the airbag deployment, the airbag cushion quickly deflates by venting the inert gas through the loose weave of the cushion fabric, and the deflated cushion hangs down loosely from the roof rail.
REMOVAL
The following procedure is for replacement of a faulty or damaged side curtain airbag. If the airbag is faulty or damaged, but not deployed, review the recommended procedures for handling non-deployed supplemental restraints. (Refer to 8 - ELECTRICAL/ RESTRAINTS - STANDARD PROCEDURE - HAN- DLING SUPPLEMENTAL RESTRAINTS). If the side curtain airbag has been deployed, review the recommended procedures for service after a supplemental restraint deployment before removing the airbag from the vehicle. (Refer to 8 - ELECTRICAL/RESTRAINTS - STANDARD PRO- CEDURE - SERVICE AFTER A SUPPLEMENTAL RESTRAINT DEPLOYMENT).
NON-DEPLOYED
WARNING: ON VEHICLES EQUIPPED WITH AIR- BAGS, DISABLE THE SUPPLEMENTAL RESTRAINT SYSTEM BEFORE ATTEMPTING ANY STEERING WHEEL, STEERING COLUMN, DRIVER AIRBAG, PASSENGER AIRBAG, SEAT BELT TENSIONER, SIDE CURTAIN AIRBAG, OR INSTRUMENT PANEL COMPONENT DIAGNOSIS OR SERVICE. DISCON- NECT AND ISOLATE THE BATTERY NEGATIVE (GROUND) CABLE, THEN WAIT TWO MINUTES FOR THE SYSTEM CAPACITOR TO DISCHARGE BEFORE PERFORMING FURTHER DIAGNOSIS OR SERVICE. THIS IS THE ONLY SURE WAY TO DISABLE THE SUPPLEMENTAL RESTRAINT SYSTEM. FAILURE TO TAKE PROPER PRECAUTIONS COULD RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT AND POSSIBLE PERSONAL INJURY.
THE
WARNING: WHEN REMOVING A DEPLOYED AIR- BAG, RUBBER GLOVES, EYE PROTECTION, AND A LONG-SLEEVED SHIRT SHOULD BE WORN. THERE MAY BE DEPOSITS ON THE AIRBAG UNIT AND OTHER INTERIOR SURFACES. IN LARGE DOSES, THESE DEPOSITS MAY CAUSE IRRITATION TO THE SKIN AND EYES.
DR
WARNING: USE EXTREME CARE TO PREVENT ANY FOREIGN MATERIAL FROM ENTERING THE SIDE CURTAIN AIRBAG, OR BECOMING ENTRAPPED BETWEEN THE SIDE CURTAIN AIRBAG CUSHION AND THE HEADLINER. FAILURE TO OBSERVE THIS WARNING COULD RESULT IN OCCUPANT INJURIES UPON AIRBAG DEPLOYMENT.
(1) Disconnect and isolate the battery negative cable. Wait two minutes for the system capacitor to discharge before further service.
(2) Remove the headliner from the vehicle. (Refer to 23 - BODY/INTERIOR/HEADLINER - REMOV- AL).
(3) Remove the screw that secures the side curtain airbag tether retainer to the base of the A-pillar near the belt line (Fig. 49).
Fig.49SideCurtainAirbagRemove/Install-Typical 1 - ROOF SIDE RAIL 2 - SPRING NUT (4 - STD CAB/6 - QUAD CAB) 3 - SCREW (4 - STD CAB/6 - QUAD CAB) 4 - CLIP (2) 5 - RIVET NUT 6 - SCREW 7 - SIDE CURTAIN AIRBAG 8 - RETAINER (3 - STD CAB/5 - QUAD CAB) 9 - WIRE HARNESS CONNECTOR
(4) Disengage the two side curtain airbag tether
plastic retainer clips from the A-pillar.
(5) Disconnect the body wire harness connector for the side curtain airbag from the connector receptacle at the back of the airbag inflator.
(6) Remove the four screws (standard cab) or six screws (quad cab) that secure the side curtain airbag inflator and manifold tube brackets to the nuts in the roof rail.
(7) Grasp the extruded plastic side curtain airbag channel firmly and pull it straight away from the roof rail far enough to disengage all three (standard cab) or five (quad cab) plastic push-in fasteners that secure it.
DR SIDE CURTAIN AIRBAG (Continued)
(8) Remove the side curtain airbag from the vehi-
cle as a unit.
INSTALLATION
The following procedure is for replacement of a faulty or damaged side curtain airbag. If the airbag is faulty or damaged, but not deployed, review the recommended procedures for handling non-deployed supplemental restraints. (Refer to 8 - ELECTRICAL/ RESTRAINTS - STANDARD PROCEDURE - HAN- DLING SUPPLEMENTAL RESTRAINTS). If the side curtain airbag has been deployed, review the recommended procedures for service after a supplemental restraint deployment before removing the airbag from the vehicle. (Refer to 8 - ELECTRICAL/RESTRAINTS - STANDARD PRO- CEDURE - SERVICE AFTER A SUPPLEMENTAL RESTRAINT DEPLOYMENT).
NON-DEPLOYED
WARNING: ON VEHICLES EQUIPPED WITH AIR- BAGS, DISABLE THE SUPPLEMENTAL RESTRAINT SYSTEM BEFORE ATTEMPTING ANY STEERING WHEEL, STEERING COLUMN, DRIVER AIRBAG, PASSENGER AIRBAG, SEAT BELT TENSIONER, SIDE CURTAIN AIRBAG, OR INSTRUMENT PANEL COMPONENT DIAGNOSIS OR SERVICE. DISCON- NECT AND ISOLATE THE BATTERY NEGATIVE (GROUND) CABLE, THEN WAIT TWO MINUTES FOR THE SYSTEM CAPACITOR TO DISCHARGE BEFORE PERFORMING FURTHER DIAGNOSIS OR SERVICE. THIS IS THE ONLY SURE WAY TO DISABLE THE SUPPLEMENTAL RESTRAINT SYSTEM. FAILURE TO TAKE PROPER PRECAUTIONS COULD RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT AND POSSIBLE PERSONAL INJURY.
THE
WARNING: WHEN REMOVING A DEPLOYED AIR- BAG, RUBBER GLOVES, EYE PROTECTION, AND A LONG-SLEEVED SHIRT SHOULD BE WORN. THERE MAY BE DEPOSITS ON THE AIRBAG UNIT AND OTHER INTERIOR SURFACES. IN LARGE DOSES, THESE DEPOSITS MAY CAUSE IRRITATION TO THE SKIN AND EYES.
WARNING: USE EXTREME CARE TO PREVENT ANY FOREIGN MATERIAL FROM ENTERING THE SIDE CURTAIN AIRBAG, OR BECOMING ENTRAPPED BETWEEN THE SIDE CURTAIN AIRBAG CUSHION AND THE HEADLINER. FAILURE TO OBSERVE THIS WARNING COULD RESULT IN OCCUPANT INJURIES UPON AIRBAG DEPLOYMENT.
(1) Position the side curtain airbag into the vehicle
as a unit.
(2) Align all three (standard cab) or five (quad cab) plastic push-in fasteners that secure the extruded
RESTRAINTS
8O - 53
plastic side curtain airbag channel with their holes in the roof side rail and push them straight into the roof rail until they are fully seated (Fig. 49).
(3) Working from the rear of the vehicle to the front, install and tighten the four screws (standard cab) or six screws (quad cab) that secure the side cur- tain airbag inflator and manifold tube brackets to the nuts in the roof rail. Tighten the screws to 5 N·m (40
in. lbs.).(4) Reconnect the body wire harness connector for the side curtain airbag to the connector receptacle at the back of the airbag inflator. Be certain the connec- tor is fully engaged and latched.
(5) Engage the two side curtain airbag tether plas-
tic retainer clips into the A-pillar.
(6) Install and tighten the screw that secures the side curtain airbag tether retainer to the base of the A-pillar near the belt line. Tighten the screw to 6
N·m (55 in. lbs.).(7) Reinstall the headliner into the vehicle. (Refer to 23 - BODY/INTERIOR/HEADLINER - INSTALLA- TION).
(8) Do not reconnect the battery negative cable at this time. The supplemental restraint system verifi- cation test procedure should be performed following service of any supplemental restraint system compo- nent. (Refer to 8 - ELECTRICAL/RESTRAINTS - STANDARD PROCEDURE - VERIFICATION TEST).
SIDE IMPACT AIRBAG CONTROL MODULE DESCRIPTION
Fig.50SideImpactAirbagControlModule
1 - CONNECTOR RECEPTACLE 2 - SIACM
On vehicles equipped with the optional side curtain airbags, a Side Impact Airbag Control Module
RESTRAINTS
8O - 54
SIDE IMPACT AIRBAG CONTROL MODULE (Continued)DR
(SIACM) and its mounting bracket are secured with four screws to the inside of each B-pillar behind (standard cab) or above (quad cab) the front outboard seat belt retractor, and concealed behind the B-pillar trim (Fig. 50). Concealed within a hollow in the cen- ter of the die cast aluminum SIACM housing is the electronic circuitry of the SIACM which includes a microprocessor and an electronic impact sensor.
The SIACM housing is secured to a die cast (stan- dard cab) or stamped steel (quad cab) mounting bracket, which is unique for the right or left side application of this component. The SIACM should never be removed from its mounting bracket. The housing also receives a case ground through this mounting bracket when it is secured to the vehicle. A molded plastic electrical connector receptacle that exits the top of the SIACM housing connects the unit to the vehicle electrical system through a dedicated take out and connector of the body wire harness. Both the SIACM housing and its electrical connection are sealed to protect the internal electronic circuitry and components against moisture intrusion.
The impact sensor internal to the SIACM is cali- brated for the specific vehicle, and is only serviced as a unit with the SIACM. The SIACM cannot be repaired or adjusted and, if damaged or faulty, it must be replaced.
OPERATION
The microprocessor in the Side Impact Airbag Con- trol Module (SIACM) contains the side curtain airbag system logic circuits and controls all of the features of only the side curtain airbag mounted on the same side of the vehicle as the SIACM. The SIACM uses On-Board Diagnostics (OBD) and can communicate with other electronic modules in the vehicle as well as with the DRBIIIt scan tool using the Programma- ble Communications Interface (PCI) data bus net- work. This method of communication is used by the SIACM to communicate with the Airbag Control Module (ACM) and for supplemental restraint system diagnosis and testing through the 16-way data link connector located on the driver side lower edge of the instrument panel. The ACM communicates with both the left and right SIACM over the PCI data bus.
The SIACM microprocessor continuously monitors all of the side curtain airbag electrical circuits to determine the system readiness. the SIACM detects a monitored system fault, it sets an active
If
and stored Diagnostic Trouble Code (DTC) and sends electronic messages to the ACM over the PCI data bus. The ACM will respond by sending an electronic message to the EMIC to turn on the airbag indicator, and by storing a DTC that will indicate whether the left or the right SIACM has stored the DTC that ini- tiated the airbag indicator illumination. An active fault only remains for the current ignition switch cycle, while a stored fault causes a DTC to be stored in memory by the SIACM. For some DTCs, if a fault does not recur for a number of ignition cycles, the SIACM will automatically erase the stored DTC. For other internal faults, the stored DTC is latched for- ever.
The SIACM receives battery current on a fused ignition switch output (run-start) circuit through a fuse in the Integrated Power Module (IPM). The SIACM has a case ground through its mounting bracket and also receives a power ground through a ground circuit and take out of the body wire harness. This take out has a single eyelet terminal connector that is secured by a ground screw to the body sheet metal. These connections allow the SIACM to be operational whenever the ignition switch is in the Start or On positions. An electronic impact sensor is contained within the SIACM. The electronic impact sensor is an accelerometer that senses the rate of vehicle deceleration, which provides verification of the direction and severity of an impact. A pre-pro- grammed decision algorithm in the SIACM micropro- cessor determines when the deceleration rate as signaled by the impact sensor indicates a side impact that is severe enough to require side curtain airbag protection. When the programmed conditions are met, the SIACM sends the proper electrical signals to deploy the side curtain airbag.
The hard wired inputs and outputs for the SIACM may be diagnosed and tested using conventional diagnostic tools and procedures. However, conven- tional diagnostic methods will not prove conclusive in the diagnosis of the SIACM, the PCI data bus net- work, or the electronic message inputs to and outputs from the SIACM. The most reliable, efficient, and accurate means to diagnose the SIACM, the PCI data bus network, and the electronic message inputs to and outputs from the SIACM requires the use of a DRBIIIt scan tool. Refer to the appropriate diagnos- tic information.
DR SIDE IMPACT AIRBAG CONTROL MODULE (Continued) REMOVAL
RESTRAINTS
8O - 55
REMOVAL
WARNING: ON VEHICLES EQUIPPED WITH AIR- BAGS, DISABLE THE SUPPLEMENTAL RESTRAINT SYSTEM BEFORE ATTEMPTING ANY STEERING WHEEL, STEERING COLUMN, DRIVER AIRBAG, PASSENGER AIRBAG, SEAT BELT TENSIONER, SIDE CURTAIN AIRBAG, OR INSTRUMENT PANEL COMPONENT DIAGNOSIS OR SERVICE. DISCON- NECT AND ISOLATE THE BATTERY NEGATIVE (GROUND) CABLE, THEN WAIT TWO MINUTES FOR THE SYSTEM CAPACITOR TO DISCHARGE BEFORE PERFORMING FURTHER DIAGNOSIS OR SERVICE. THIS IS THE ONLY SURE WAY TO DISABLE THE SUPPLEMENTAL RESTRAINT SYSTEM. FAILURE TO TAKE PROPER PRECAUTIONS COULD RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT AND POSSIBLE PERSONAL INJURY.
THE
WARNING: THE SIDE IMPACT AIRBAG CONTROL MODULE CONTAINS THE IMPACT SENSOR, WHICH ENABLES THE SYSTEM TO DEPLOY THE SIDE CURTAIN AIRBAGS. NEVER STRIKE OR DROP THE SIDE IMPACT AIRBAG CONTROL MODULE, AS IT CAN DAMAGE THE IMPACT SENSOR OR AFFECT ITS CALIBRATION. IF A SIDE IMPACT AIRBAG CON- TROL MODULE IS ACCIDENTALLY DROPPED DUR- ING SERVICE, THE MODULE MUST BE SCRAPPED AND REPLACED WITH A NEW UNIT. FAILURE TO OBSERVE THIS WARNING COULD RESULT IN ACCI- DENTAL, INCOMPLETE, OR IMPROPER SIDE CUR- TAIN AIRBAG DEPLOYMENT AND POSSIBLE OCCUPANT INJURIES.
(1) Adjust the front seat to its most forward posi-
tion for easiest access to the lower B-pillar trim.
(2) Disconnect and isolate the battery negative cable. Wait two minutes for the system capacitor to discharge before further service.
(3) Remove the front outboard seat belt and retrac- (Refer to 8 - tor from the inside of the B-pillar. ELECTRICAL/RESTRAINTS/FRONT OUTBOARD SEAT BELT & RETRACTOR - REMOVAL - STAN- DARD CAB).
(4) Remove the four screws that secure the Side Impact Airbag Control Module (SIACM) mounting bracket to the inside of the B-pillar (Fig. 51).
(5) Reach through the retractor mounting hole in the inner B-pillar to access and disengage the two plastic push-in fasteners that secure the SIACM to the inside of the B-pillar.
Fig.51SideImpactAirbagControlModule
Remove/Install-StdCab
1 - B-PILLAR 2 - SCREW (4) 3 - FASTENER (2) 4 - BRACKET 5 - SIACM 6 - WIRE HARNESS CONNECTOR
(6) Pull the SIACM and mounting bracket out through the retractor mounting hole far enough to access and disconnect the body wire harness connec- tor for the SIACM from the module connector recep- tacle.
(7) Remove the SIACM and its mounting bracket
from the B-pillar as a unit.
REMOVAL
WARNING: ON VEHICLES EQUIPPED WITH AIR- BAGS, DISABLE THE SUPPLEMENTAL RESTRAINT SYSTEM BEFORE ATTEMPTING ANY STEERING WHEEL, STEERING COLUMN, DRIVER AIRBAG, PASSENGER AIRBAG, SEAT BELT TENSIONER, SIDE CURTAIN AIRBAG, OR INSTRUMENT PANEL COMPONENT DIAGNOSIS OR SERVICE. DISCON- NECT AND ISOLATE THE BATTERY NEGATIVE (GROUND) CABLE, THEN WAIT TWO MINUTES FOR THE SYSTEM CAPACITOR TO DISCHARGE BEFORE PERFORMING FURTHER DIAGNOSIS OR SERVICE. THIS IS THE ONLY SURE WAY TO DISABLE THE SUPPLEMENTAL RESTRAINT SYSTEM. FAILURE TO TAKE PROPER PRECAUTIONS COULD RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT AND POSSIBLE PERSONAL INJURY.
THE
RESTRAINTS
8O - 56
SIDE IMPACT AIRBAG CONTROL MODULE (Continued)DR
WARNING: THE SIDE IMPACT AIRBAG CONTROL MODULE CONTAINS THE IMPACT SENSOR, WHICH ENABLES THE SYSTEM TO DEPLOY THE SIDE CURTAIN AIRBAGS. NEVER STRIKE OR DROP THE SIDE IMPACT AIRBAG CONTROL MODULE, AS IT CAN DAMAGE THE IMPACT SENSOR OR AFFECT ITS CALIBRATION. IF A SIDE IMPACT AIRBAG CON- TROL MODULE IS ACCIDENTALLY DROPPED DUR- ING SERVICE, THE MODULE MUST BE SCRAPPED AND REPLACED WITH A NEW UNIT. FAILURE TO OBSERVE THIS WARNING COULD RESULT IN ACCI- DENTAL, INCOMPLETE, OR IMPROPER SIDE CUR- TAIN AIRBAG DEPLOYMENT AND POSSIBLE OCCUPANT INJURIES.
(1) Adjust the front seat to its most forward posi-
tion for easiest access to the lower B-pillar trim.
(2) Disconnect and isolate the battery negative cable. Wait two minutes for the system capacitor to discharge before further service.
(3) Remove the front outboard seat belt and retrac- (Refer to 8 - tor from the inside of the B-pillar. ELECTRICAL/RESTRAINTS/FRONT OUTBOARD SEAT BELT & RETRACTOR - REMOVAL - QUAD CAB).
(4) Remove the four screws that secure the Side Impact Airbag Control Module (SIACM) mounting bracket to the inside of the B-pillar (Fig. 52).
Fig.52SideImpactAirbagControlModule
Remove/Install-QuadCab
1 - B-PILLAR 2 - WIRE HARNESS CONNECTOR 3 - SCREW (4) 4 - HOOK 5 - BRACKET 6 - SIACM 7 - SLOT
(5) Reach through the retractor mounting hole in the inner B-pillar to access the SIACM and lift it upward far enough to disengage the hook on the mounting bracket from the slot on the inner B-pillar. (6) Pull the SIACM and mounting bracket out through the retractor mounting hole far enough to access and disconnect the body wire harness connec- tor for the SIACM from the module connector recep- tacle.
(7) Remove the SIACM and its mounting bracket
from the B-pillar as a unit.
INSTALLATION
INSTALLATION
WARNING: ON VEHICLES EQUIPPED WITH AIR- BAGS, DISABLE THE SUPPLEMENTAL RESTRAINT SYSTEM BEFORE ATTEMPTING ANY STEERING WHEEL, STEERING COLUMN, DRIVER AIRBAG, PASSENGER AIRBAG, SEAT BELT TENSIONER, SIDE CURTAIN AIRBAG, OR INSTRUMENT PANEL COMPONENT DIAGNOSIS OR SERVICE. DISCON- NECT AND ISOLATE THE BATTERY NEGATIVE (GROUND) CABLE, THEN WAIT TWO MINUTES FOR THE SYSTEM CAPACITOR TO DISCHARGE BEFORE PERFORMING FURTHER DIAGNOSIS OR SERVICE. THIS IS THE ONLY SURE WAY TO DISABLE THE SUPPLEMENTAL RESTRAINT SYSTEM. FAILURE TO TAKE PROPER PRECAUTIONS COULD RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT AND POSSIBLE PERSONAL INJURY.
THE
WARNING: THE SIDE IMPACT AIRBAG CONTROL MODULE CONTAINS THE IMPACT SENSOR, WHICH ENABLES THE SYSTEM TO DEPLOY THE SIDE CURTAIN AIRBAGS. NEVER STRIKE OR DROP THE SIDE IMPACT AIRBAG CONTROL MODULE, AS IT CAN DAMAGE THE IMPACT SENSOR OR AFFECT ITS CALIBRATION. IF A SIDE IMPACT AIRBAG CON- TROL MODULE IS ACCIDENTALLY DROPPED DUR- ING SERVICE, THE MODULE MUST BE SCRAPPED AND REPLACED WITH A NEW UNIT. FAILURE TO OBSERVE THIS WARNING COULD RESULT IN ACCI- DENTAL, INCOMPLETE, OR IMPROPER SIDE CUR- TAIN AIRBAG DEPLOYMENT AND POSSIBLE OCCUPANT INJURIES.
(1) Position the Side Impact Airbag Control Mod- ule (SIACM) and its mounting bracket to the B-pillar as a unit (Fig. 51).
(2) Reconnect the body wire harness connector for
the SIACM to the module connector receptacle.
(3) Reach through the retractor mounting hole in the inner B-pillar to position and engage the two
DR SIDE IMPACT AIRBAG CONTROL MODULE (Continued)
RESTRAINTS
8O - 57
plastic push-in fasteners that secure the SIACM to the inside of the B-pillar.
(4) Loosely install the four screws that secure the SIACM mounting bracket to the base of the B-pillar. (5) Tighten the four screws that secure the SIACM mounting bracket to the B-pillar in the following sequence: upper left, lower right, lower left, upper right. Tighten the screws to 12 N·m (105 in. lbs.).
(6) Reinstall
the front outboard seat belt and retractor to the inside of the B-pillar. (Refer to 8 - ELECTRICAL/RESTRAINTS/FRONT OUTBOARD SEAT BELT & RETRACTOR - INSTALLATION - STANDARD CAB).
(7) Do not reconnect the battery negative cable at this time. The supplemental restraint system verifi- cation test procedure should be performed following service of any supplemental restraint system compo- nent. (Refer to 8 - ELECTRICAL/RESTRAINTS - STANDARD PROCEDURE - VERIFICATION TEST).
INSTALLATION
WARNING: ON VEHICLES EQUIPPED WITH AIR- BAGS, DISABLE THE SUPPLEMENTAL RESTRAINT SYSTEM BEFORE ATTEMPTING ANY STEERING WHEEL, STEERING COLUMN, DRIVER AIRBAG, PASSENGER AIRBAG, SEAT BELT TENSIONER, SIDE CURTAIN AIRBAG, OR INSTRUMENT PANEL COMPONENT DIAGNOSIS OR SERVICE. DISCON- NECT AND ISOLATE THE BATTERY NEGATIVE (GROUND) CABLE, THEN WAIT TWO MINUTES FOR THE SYSTEM CAPACITOR TO DISCHARGE BEFORE PERFORMING FURTHER DIAGNOSIS OR SERVICE. THIS IS THE ONLY SURE WAY TO DISABLE THE SUPPLEMENTAL RESTRAINT SYSTEM. FAILURE TO TAKE PROPER PRECAUTIONS COULD RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT AND POSSIBLE PERSONAL INJURY.
THE
WARNING: THE SIDE IMPACT AIRBAG CONTROL MODULE CONTAINS THE IMPACT SENSOR, WHICH
ENABLES THE SYSTEM TO DEPLOY THE SIDE CURTAIN AIRBAGS. NEVER STRIKE OR DROP THE SIDE IMPACT AIRBAG CONTROL MODULE, AS IT CAN DAMAGE THE IMPACT SENSOR OR AFFECT ITS CALIBRATION. IF A SIDE IMPACT AIRBAG CON- TROL MODULE IS ACCIDENTALLY DROPPED DUR- ING SERVICE, THE MODULE MUST BE SCRAPPED AND REPLACED WITH A NEW UNIT. FAILURE TO OBSERVE THIS WARNING COULD RESULT IN ACCI- DENTAL, INCOMPLETE, OR IMPROPER SIDE CUR- TAIN AIRBAG DEPLOYMENT AND POSSIBLE OCCUPANT INJURIES.
(1) Position the Side Impact Airbag Control Mod- ule (SIACM) and its mounting bracket to the B-pillar as a unit (Fig. 52).
(2) Reconnect the body wire harness connector for
the SIACM to the module connector receptacle.
(3) Reach through the retractor mounting hole in the inner B-pillar to position and engage the hook on the SIACM mounting bracket in the slot of the inner B-pillar.
(4) Loosely install the four screws that secure the
SIACM mounting bracket to the inner B-pillar.
(5) Tighten the four screws that secure the SIACM mounting bracket to the B-pillar in the following sequence: upper left, lower right, lower left, upper right. Tighten the screws to 12 N·m (105 in. lbs.).
(6) Reinstall
the front outboard seat belt and retractor to the inside of the B-pillar. (Refer to 8 - ELECTRICAL/RESTRAINTS/FRONT OUTBOARD SEAT BELT & RETRACTOR - INSTALLATION - QUAD CAB).
(7) Do not reconnect the battery negative cable at this time. The supplemental restraint system verifi- cation test procedure should be performed following service of any supplemental restraint system compo- nent. (Refer to 8 - ELECTRICAL/RESTRAINTS - STANDARD PROCEDURE - VERIFICATION TEST).
DR
SPEED CONTROL
8P - 1
SPEED CONTROL
TABLE OF CONTENTS
page
page
SPEED CONTROL
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . 1
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
DIAGNOSIS AND TESTINGDIAGNOSIS AND TESTING - VACUUM
SUPPLY TEST . . . . . . . . . . . . . . . . . . . . . . . . . 2
DIAGNOSIS AND TESTING - ROAD TEST . . . . 3SPECIFICATIONS
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . 7SWITCH
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . 8
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . 9TORQUE - SPEED CONTROL
. . . . . . . . . . . . . 3
VACUUM RESERVOIR
CABLE
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . 3
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . 6SERVO
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . 6
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . 9
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
DIAGNOSIS AND TESTING - VACUUMRESERVOIR . . . . . . . . . . . . . . . . . . . . . . . . . . 9
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . 10SPEED CONTROL DESCRIPTION
All 3.7L/4.7L/5.9L/8.0LGas Engines and/or Diesel With Automatic Trans.
The speed control system is operated by the use of a cable and a vacuum controlled servo. Electronic control of the speed control system is integrated into the Powertrain Control Module (PCM). The controls consist of two steering wheel mounted switches. The switches are labeled: ON/OFF, RES/ACCEL, SET, COAST, and CANCEL.
The system is designed to operate at speeds above
30 mph (50 km/h).
WARNING: THE USE OF SPEED CONTROL IS NOT RECOMMENDED WHEN DRIVING CONDITIONS DO NOT PERMIT MAINTAINING A CONSTANT SPEED, SUCH AS IN HEAVY TRAFFIC OR ON ROADS THAT ARE WINDING, ICY, SNOW COVERED, OR SLIP- PERY.
5.7L Gas
The speed control system is fully electronically con- trolled by the Powertrain Control Module (PCM). A cable and a vacuum controlled servo are not used. This is a servo-less system. The controls consist of two steering wheel mounted switches. The
switches are labeled: ON/OFF, RES/ACCEL, SET, COAST, and CANCEL.
The system is designed to operate at speeds above
30 mph (50 km/h).
WARNING: THE USE OF SPEED CONTROL IS NOT RECOMMENDED WHEN DRIVING CONDITIONS DO NOT PERMIT MAINTAINING A CONSTANT SPEED, SUCH AS IN HEAVY TRAFFIC OR ON ROADS THAT ARE WINDING, ICY, SNOW COVERED, OR SLIP- PERY.
5.9L Diesel With Manual Trans.
The speed control system is fully electronically con- trolled by the Engine Control Module (ECM). A cable and a vacuum controlled servo are not used if the vehicle is equipped with a manual transmission and a diesel engine. This is a ser- vo-less system. The controls consist of two steering wheel mounted switches. The switches are labeled: ON/OFF, RES/ACCEL, SET, COAST, and CANCEL. The system is designed to operate at speeds above
30 mph (50 km/h).
WARNING: THE USE OF SPEED CONTROL IS NOT RECOMMENDED WHEN DRIVING CONDITIONS DO NOT PERMIT MAINTAINING A CONSTANT SPEED, SUCH AS IN HEAVY TRAFFIC OR ON ROADS THAT ARE WINDING, ICY, SNOW COVERED, OR SLIP- PERY.
SPEED CONTROL
8P - 2
SPEED CONTROL (Continued) OPERATIONWhen speed control is selected by depressing the ON switch, the PCM (the ECM with a diesel engine) allows a set speed to be stored in its RAM for speed control. To store a set speed, depress the SET switch while the vehicle is moving at a speed between 35
and 85 mph. In order for the speed control to engage, the brakes cannot be applied, nor can the gear selec- tor be indicating the transmission is in Park or Neu- tral. The speed control can be disengaged manually by: † Stepping on the brake pedal † Depressing the OFF switch † Depressing the CANCEL switch. † Depressing the clutch pedal (if equipped).NOTE: Depressing the OFF switch or turning off the ignition switch will erase the set speed stored in the PCM (the ECM with a diesel engine).
For added safety, the speed control system is pro- grammed to disengage for any of the following condi- tions:† An indication of Park or Neutral † A rapid increase rpm (indicates that the clutch has been disengaged) † Excessive engine rpm (indicates that the trans- † The speed signal increases at a rate of 10 mph per second (indicates that the coefficient of friction between the road surface and tires is extremely low) † The speed signal decreases at a rate of 10 mph per second (indicates that the vehicle may have decelerated at an extremely high rate)
mission may be in a low gear)
Once the speed control has been disengaged, depressing the RES/ACCEL switch (when speed is greater than 30 mph) restores the vehicle to the tar- get speed that was stored in the PCM (the ECM with a diesel engine).
While the speed control is engaged, the driver can increase the vehicle speed by depressing the RES/AC- CEL switch. The new target speed is stored in the PCM (the ECM with a diesel engine) when the RES/ ACCEL is released. The PCM also has a 9tap-up9 fea- ture in which vehicle speed increases at a rate of approximately 2 mph for each momentary switch activation of the RES/ACCEL switch.
A “tap down” feature is used to decelerate without disengaging the speed control system. To decelerate from an existing recorded target speed, momentarily depress the COAST switch. For each switch activa- tion, speed will be lowered approximately 1 mph.
DR
DIAGNOSIS AND TESTING
DIAGNOSIS AND TESTING - VACUUM SUPPLY TEST
3.7L / 4.7L / 5.9L / 8.0L Gas Powered Engines
3.7L/4.7L/5.9L/8.0L gas powered engines: actual engine vacuum, a vacuum reservoir, a one-way check valve and vacuum lines are used to supply vacuum to the speed control servo.
(1) Disconnect vacuum hose at speed control servo and install a vacuum gauge into the disconnected hose.
(2) Start engine and observe gauge at idle. Vac- uum gauge should read at least ten inches of mer- cury.
(3) If vacuum is less than ten inches of mercury, determine source of leak. Check vacuum line to engine for leaks. Also check actual engine intake manifold vacuum. If manifold vacuum does not meet this requirement, check for poor engine performance and repair as necessary.
(4) If vacuum line to engine is not leaking, check for leak at vacuum reservoir. To locate and gain access to reservoir, refer to Vacuum Reservoir Remov- al/Installation in this group. Disconnect vacuum line at reservoir and connect a hand-operated vacuum pump to reservoir fitting. Apply vacuum. Reservoir vacuum should not bleed off. If vacuum is being lost, replace reservoir.
(5) Verify operation of one-way check valve and
check it for leaks.
(a) Locate one-way check valve. The valve is located in vacuum line between vacuum reservoir and engine vacuum source. Disconnect vacuum hoses (lines) at each end of valve.
(b) Connect a hand-operated vacuum pump to reservoir end of check valve. Apply vacuum. Vac- uum should not bleed off. If vacuum is being lost, replace one-way check valve.
(c) Connect a hand-operated vacuum pump to vacuum source end of check valve. Apply vacuum. Vacuum should flow through valve. If vacuum is not flowing, replace one-way check valve. Seal the fitting at opposite end of valve with a finger and apply vacuum. If vacuum will not hold, diaphragm within check valve has ruptured. Replace valve.
5.7 Gas
Vacuum is not used for any part of the speed con-
trol system if equipped with a 5.7L V-8 engine.
5.9L Diesel Engine With Manual Trans.
Vacuum is not used for any part of the speed con- trol system if equipped with a diesel engine and a manual transmission.
DR SPEED CONTROL (Continued) 5.9L Diesel Engines With Automatic Trans.
If equipped with a diesel powered engine and an automatic transmission, an electric vacuum pump and vacuum lines are used to supply vacuum to the speed control servo. A vacuum reservoir is not used.
DIAGNOSIS AND TESTING - ROAD TEST
Perform a vehicle road test to verify reports of speed control system malfunction. The road test should include attention to the speedometer. Speed- ometer operation should be smooth and without flut- ter at all speeds.
Flutter in the speedometer indicates a problem which might cause surging in the speed control sys- tem. The cause of any speedometer problems should be corrected before proceeding. Refer to Instrument Cluster for speedometer diagnosis.
speedometer operates properly, check for:
If a road test verifies a system problem and the † A Diagnostic Trouble Code (DTC). If a DTC exists, conduct tests per the Powertrain Diagnostic Procedures service manual. † A misadjusted brake (stop) lamp switch. This
could also cause an intermittent problem.
SPEED CONTROL
8P - 3
† Loose, damaged or corroded electrical connec- tions at the servo (if used). Corrosion should be removed from electrical terminals and a light coating of Mopar MultiPurpose Grease, equivalent, applied.
or † Leaking vacuum reservoir (if used). † Loose or leaking vacuum hoses or connections (if used).† Defective one-way vacuum check valve (if used). † Secure attachment of both ends of the speed con- trol servo cable (if used). † Smooth operation of throttle linkage (if used) † Failed speed control servo (if used). Do the servo
and throttle body air valve.
vacuum test.
CAUTION: When test probing for voltage or conti- nuity at electrical connectors, care must be taken not If these components are damaged, intermittent or complete system failure may occur.
to damage connector,
terminals or seals.
SPECIFICATIONS
TORQUE - SPEED CONTROL
DESCRIPTION
Servo Mounting Bracket-
to-Servo Nuts
Servo Mounting Bracket- to-Battery Tray Screws Speed Control Switch
Mounting Screws Vacuum Reservoir
Mounting Nuts
CABLE DESCRIPTION
N-m
