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The main water-to-oil transmission oil cooler is mounted to a bracket on the intake side of the engine (Fig. 4).
The air-to-oil cooler is located in front of and to the
left side of the radiator (Fig. 5).
Fig.5AuxiliaryTransmissionOilCooler—Diesel
Engine
1 - MOUNTING BOLTS 2 - RADIATOR 3 - QUICK-CONNECT FITTINGS 4 - TRANSMISSION OIL COOLER
Fig.4TransmissionWater-To-OilCooler—Diesel
Engine—Typical 1 - TRANSMISSION WATER-TO-OIL COOLER
OPERATION
thermostat
The transmission oil is routed through the main cooler first, then the auxiliary cooler where addi- tional heat is removed from the transmission oil before returning to the transmission. The cooler has an internal controls fluid flow through the cooler. When the transmission fluid is cold (less then operating temperature), the fluid is routed through the cooler bypass. When the trans- mission fluid reaches operating temperatures and above, the thermostat closes off the bypass allowing fluid flow through the cooler. The thermostat is ser- vicable.
that
REMOVAL
REMOVAL—AIR TO OIL COOLER
(1) Remove Charge Air Cooler (Refer to 11 - EXHAUST SYSTEM/TURBOCHARGER SYSTEM/ CHARGE AIR COOLER AND PLUMBING - REMOVAL).
(2) Place a drain pan under the oil cooler. (3) Raise the vehicle. (4) Disconnect the oil cooler quick-connect fittings
from the transmission lines.
(5) Remove the charge air cooler-to-oil cooler bolt
(Fig. 6).
(6) Remove two mounting nuts. (7) Remove the oil
cooler and line assembly towards the front of vehicle. Cooler must be rotated and tilted into position while removing.
REMOVAL—WATER TO OIL COOLER
CAUTION: If a leak should occur in the water-to-oil cooler mounted to the side of the engine block, engine coolant may become mixed with transmis- sion fluid. Transmission fluid may also enter engine cooling system. Both cooling system and transmis- sion should be drained and inspected in case of oil cooler leakage.
(1) Disconnect both battery negative cables. (2) Remove starter (Refer to 8 - ELECTRICAL/
STARTING/STARTER MOTOR - REMOVAL).
(3) Drain cooling system (Refer to 7 - COOLING -
STANDARD PROCEDURE).
(4) Disconnect coolant lines from cooler.
DR TRANS COOLER - 5.9L DIESEL (Continued)
TRANSMISSION
7 - 75
Fig.6AuxiliaryTransmissionOilCooler—Diesel
Engine
Fig.7TransmissionWater-To-OilCooler—Diesel 1 - TRANSMISSION WATER-TO-OIL COOLER
1 - MOUNTING BOLTS 2 - RADIATOR 3 - QUICK-CONNECT FITTINGS 4 - TRANSMISSION OIL COOLER
(5) Disconnect transmission oil lines from cooler.
Plug cooler lines to prevent oil leakage.
(6) Remove cooler bracket to transmission bolt. (7) Remove two cooler bracket to cooler bolts. (8) Remove cooler assembly from vehicle. (Fig. 7)
INSTALLATION
INSTALLATION—AIR TO OIL COOLER
(1) Carefully position the oil cooler assembly to the
vehicle.
(2) Install two nuts and one bolt. Tighten to 11
N·m (95 in. lbs.) torque.
mission cooler lines.
(3) Connect the quick-connect fittings to the trans-
(4) Install Charge Air Cooler
to 11 - EXHAUST SYSTEM/TURBOCHARGER SYSTEM/ CHARGE AIR COOLER AND PLUMBING - INSTALLATION).
(Refer
(5) Start the engine and check all
fittings for
leaks.
(6) Check the fluid level in the automatic trans- mission (Refer to 21 - TRANSMISSION/TRANS- AXLE/AUTOMATIC - 47RE/FLUID - STANDARD PROCEDURE).
INSTALLATION
(1) Position oil cooler on cylinder block. (2) Install two mounting bolts to cooler at the cyl-
inder block. Torque bolts to 77N·m (57 ft. lbs.)
(3) Install cooler bracket to transmission adapter
bolt. Tighten to 24N·M (18 ft. lbs.).
(4) Connect transmission oil lines to cooler. (5) Connect coolant hoses to cooler. (6) Install starter motor (Refer to 8 - ELECTRI- INSTALLA-
CAL/STARTING/STARTER MOTOR - TION).
(7) Connect battery negative cables. (8) Fill cooling system (Refer to 7 - COOLING -
STANDARD PROCEDURE).
(9) Check transmission oil level and fill as neces- sary (Refer to 21 - TRANSMISSION/TRANSAXLE/ AUTOMATIC STANDARD PROCEDURE).
47RE/FLUID -
DR
AUDIO
8A - 1
AUDIO
TABLE OF CONTENTS
page
page
AUDIO
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . 1
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
DIAGNOSIS AND TESTING - AUDIO . . . . . . . . . . 2AMPLIFIER
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . 3
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . 4ANTENNA BODY & CABLE
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . 4
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
DIAGNOSIS AND TESTING - ANTENNA BODYAND CABLE
. . . . . . . . . . . . . . . . . . . . . . . . . . 4
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . 6INSTRUMENT PANEL ANTENNA CABLE
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . 7RADIO
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . 7
AUDIO DESCRIPTION
An audio system is standard factory-installed equipment on this model. Several combinations of radio receivers and speaker systems are offered. The audio system uses an ignition switched source of bat- tery current so that the system will only operate when the ignition switch is in the RUN or ACCES- SORY positions. The audio system includes the following compo- nents:† Antenna † Power amplifier (with premium speaker system only)† Radio noise suppression components † Radio receiver † Remote radio switches (if equipped) † Speakers Certain functions and features of the audio system rely upon resources shared with other electronic modules in the vehicle over the Programmable Com- munication Interface (PCI) bus network. The data bus network allows the sharing of sensor informa- tion. For diagnosis of these electronic modules or of the data bus network, the use of a DRB IIIt scan tool
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . 8RADIO NOISE SUPPRESSION GROUND STRAP
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . 8
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . 10REMOTE SWITCHES
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . 10
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
DIAGNOSIS AND TESTING - REMOTESWITCHES
. . . . . . . . . . . . . . . . . . . . . . . . . . 11
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . 12SPEAKER
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . 12
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
DIAGNOSIS AND TESTING - SPEAKER . . . . . . 13
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . 15and the proper Diagnostic Procedures manual are recommended.
Refer to the appropriate wiring information for complete standard and premium audio system circuit diagrams. The wiring information includes proper wire and connector repair procedures, further details on wire harness routing and retention, as well as pin-out and location views for the various wire har- ness connectors, splices, and grounds.
OPERATION
The audio system components are designed to pro- vide audio entertainment and information through the reception, tuning and amplification of locally broadcast radio signals in both the Amplitude Modu- lating (AM) and Frequency Modulating (FM) com- mercial frequency ranges.
The audio system components operate on battery current received through a fuse in the Integrated Power Module (IPM) on a fused ignition switch out- put (run-acc) circuit so that the system will only operate when the ignition switch is in the Run or Accessory positions.
On vehicles that are equipped with the optional remote Instrument Cluster receives hard wired resistor multiplexed inputs from the remote radio switches. The programming in the
switches,
radio
the
AUDIO
8A - 2
AUDIO (Continued)Instrument Cluster allows it to process those inputs and send the proper messages to the radio receiver over the Programmable Communication Interface (PCI) bus network to control the radio volume up or down, station seek up or down, preset station advance, and mode advance functions.
Refer to the owner’s manual for more information on the features, use and operation of each of the available audio systems.
DIAGNOSIS AND TESTING - AUDIO
Any diagnosis of the Audio system should begin with the use of the DRB IIIt diagnostic tool. For information on the use of the DRB IIIt, refer to the appropriate Diagnostic Service Manual.
Refer to the appropriate wiring information. The wiring information includes wiring diagrams, proper wire and connector repair procedures, details of wire
DR
harness routing and retention, connector pin-out information and location views for the various wire harness connectors, splices and grounds.
WARNING: DISABLE THE AIRBAG SYSTEM BEFORE ATTEMPTING ANY STEERING WHEEL, STEERING COLUMN, SEAT BELT TENSIONER, SIDE AIRBAG, OR INSTRUMENT PANEL COMPONENT DIAGNOSIS OR SERVICE. DISCONNECT AND ISO- LATE THE BATTERY NEGATIVE (GROUND) CABLE, THEN WAIT TWO MINUTES FOR THE AIRBAG SYS- TEM CAPACITOR TO DISCHARGE BEFORE PER- FORMING FURTHER DIAGNOSIS OR SERVICE. THIS IS THE ONLY SURE WAY TO DISABLE THE AIRBAG SYSTEM. FAILURE TO TAKE THE PROPER PRE- CAUTIONS COULD RESULT IN ACCIDENTAL AIR- BAG DEPLOYMENT AND POSSIBLE PERSONAL INJURY.
AUDIO SYSTEM DIAGNOSIS TABLE
CONDITION
POSSIBLE CAUSES
CORRECTION
NO AUDIO
1. Fuse faulty.
NO RADIO DISPLAY
2. Radio/amplifier (if equipped) connector faulty. 3. Wiring faulty.
4. Radio/amplifier (if equipped) ground faulty.
5. Radio/amplifier (if equipped) faulty. 6. Speakers faulty. 1. Fuse faulty.
2. Radio connector faulty.
3. Wiring faulty.
4. Radio ground faulty.
5. Radio faulty.
1. Check radio fuse and Ignition-Off Draw (IOD) fuse in the Integrated Power Module (IPM). Replace fuses, if required. 2. Check for loose or corroded radio/amplifier connector. Repair, if required. 3. Check for shorted or open wires. Repair wiring, if required. 4. Check for continuity between radio chassis and a known good ground. There should be continuity. Repair ground, if required. 5. Refer to appropriate Diagnostic Service Manual. 6. Replace speaker as necessary. 1. Check radio fuse and Ignition-Off Draw (IOD) fuse in Integrated Power Module (IPM). Replace fuses, if required. 2. Check for loose or corroded radio connector. Repair, if required. 3. Check for battery voltage at radio connector. Repair wiring, if required. 4. Check for continuity between radio chassis and a known good ground. There should be continuity. Repair ground, if required. 5. Refer to appropriate Diagnostic Service Manual.
DR AUDIO (Continued)
AUDIO
8A - 3
CONDITION
POSSIBLE CAUSES
CORRECTION
CLOCK WILL NOT KEEP SET TIME
1. Fuse faulty.
2. Radio connector faulty.
3. Wiring faulty.
4. Radio ground faulty.
5. Radio faulty.
POOR RADIO RECEPTION
1. Antenna faulty.
NO/POOR TAPE OPERATION
NO COMPACT DISC OPERATION
2. Radio ground faulty.
3. Radio noise suppression faulty. 4. Radio faulty.
1. Faulty tape. 2. Foreign objects behind tape door. 3. Dirty cassette tape head.
4. Faulty tape deck. 1. Faulty CD. 2. Foreign material on CD. 3. Condensation on CD or optics. 4. Faulty CD player.
1. Check Ignition-Off Draw (IOD) fuse in the Integrated Power Module (IPM). Replace fuse, if required. 2. Check for loose or corroded radio connector. Repair, if required. 3. Check for battery voltage at radio connector. Repair wiring, if required. 4. Check for continuity between radio chassis and a known good ground. There should be continuity. Repair ground, if required. 5. Refer to appropriate Diagnostic Service Manual. 1. (Refer to 8 - ELECTRICAL/AUDIO/ANTENNA BODY & CABLE - DIAGNOSIS AND TESTING). 2. Check for continuity between radio chassis and a known good ground. There should be continuity. Repair ground, if required. 3. Repair or replace ground strap as necessary.
4. Refer to appropriate Diagnostic Service Manual. 1. Insert known good tape and test operation. 2. Remove foreign objects and test operation.
3. Clean head with Mopar Cassette Head Cleaner. 4. Exchange or replace radio, if required. 1. Insert known good CD and test operation. 2. Clean CD and test operation. 3. Allow temperature of vehicle interior to stabilize and test operation. 4. Refer to appropriate Diagnostic Service Manual.
AMPLIFIER DESCRIPTION
The optional Infinity premium speaker system includes a separate Infinity audio power amplifier. The amplifier is a six channel unit and is rated at 240 total output watts. The amplifier is located behind the glove box.
OPERATION
The power amplifier electronically increases the frequency response of the normal audio signal output from the radio amplifier in order to improve the acoustic performance of the speakers. On vehicles
equipped with an amplifier, the amplifier section of the radio becomes a pre-amplifier.
The amplifier receives audio signal
inputs for speaker channels from the radio, then sends ampli- fied audio outputs through six separate channels with dedicated feed and return circuits to the indi- vidual speakers.
REMOVAL
(1) Disconnect and isolate the battery negative
cable.
(2) Remove glove box (Refer to 23 - BODY/IN-
STRUMENT PANEL/GLOVE BOX - REMOVAL).
AUDIO
8A - 4
AMPLIFIER (Continued)(3) Remove instrument panel center bezel (Refer to 23 - BODY/INSTRUMENT PANEL/INSTRUMENT PANEL CENTER BEZEL - REMOVAL).
(4) Remove instrument panel
lower right center bezel (Refer to 23 - BODY/INSTRUMENT PANEL/IP LOWER RIGHT CENTER BEZEL - REMOVAL).
(5) Disconnect electrical harness connector from
amplifier (Fig. 1).
Fig.1AMPLIFIERMOUNTING
1 - INSTRUMENT PANEL 2 - AMPLIFIER 3 - MOUNTING BOLTS 4 - ELECTRICAL CONNECTOR
(6) Remove mounting bolts.
INSTALLATION
(1) Connect
electrical harness
connector
and
(2) Install mounting bolts. Tighten to 10 N·m (90
install amplifier.
in. lbs.).
(3) Install
instrument panel
lower right center bezel (Refer to 23 - BODY/INSTRUMENT PANEL/IP LOWER RIGHT CENTER BEZEL - INSTALLA- TION).
(4) Install instrument panel center bezel (Refer to 23 - BODY/INSTRUMENT PANEL/INSTRUMENT PANEL CENTER BEZEL - INSTALLATION).
(5) Install glove box (Refer to 23 - BODY/INSTRU-
MENT PANEL/GLOVE BOX - INSTALLATION).
(6) Connect battery negative cable.
ANTENNA BODY & CABLE DESCRIPTION
The antenna body and cable is secured below the fender panel by the antenna cap nut through a mounting hole in the right front fender. The primary coaxial antenna cable is then routed beneath the fender sheet metal and through a entry hole in the
DR
right cowl side panel into the interior of the vehicle. Inside the vehicle, the primary coaxial cable is con- nected to a secondary instrument panel antenna coaxial cable with an in-line connector that is located behind the right kick panel. The secondary coaxial cable is then routed behind the instrument panel to the back of the radio.
OPERATION
by
are
that
signals
broadcast
The antenna body and cable connects the antenna mast to the radio. The radio antenna is an electro- magnetic circuit component used to capture radio fre- quency local commercial radio stations in both the Amplitude Modulating (AM) and Frequency Modulating (FM) frequency ranges. These electromagnetic radio fre- quency signals induce small electrical modulations into the antenna as they move past the mast. The antenna body transfers the weak electromagnetic radio waves induced into the rigid antenna mast into the center conductor of the flexible primary antenna coaxial the antenna coaxial cable is grounded through both the antenna body and the radio chassis, effectively shielding the radio waves as they are conducted to the radio. The radio then tunes and amplifies the weak radio signals into stronger electrical signals in order to operate the audio system speakers.
cable. The braided outer shield of
DIAGNOSIS AND TESTING - ANTENNA BODY AND CABLE
antenna with an ohmmeter:
The following four tests are used to diagnose the † Test 1 - Mast to ground test † Test 2 - Tip-of-mast to tip-of-conductor test † Test 3 - Body ground to battery ground test † Test 4 - Body ground to antenna coaxial cable
shield test.
WARNING: DISABLE THE AIRBAG SYSTEM BEFORE ATTEMPTING ANY STEERING WHEEL, STEERING COLUMN, SEAT BELT TENSIONER, SIDE AIRBAG, OR INSTRUMENT PANEL COMPONENT DIAGNOSIS OR SERVICE. DISCONNECT AND ISO- LATE THE BATTERY NEGATIVE (GROUND) CABLE, THEN WAIT TWO MINUTES FOR THE AIRBAG SYS- TEM CAPACITOR TO DISCHARGE BEFORE PER- FORMING FURTHER DIAGNOSIS OR SERVICE. THIS IS THE ONLY SURE WAY TO DISABLE THE AIRBAG SYSTEM. FAILURE TO TAKE THE PROPER PRE- CAUTIONS COULD RESULT IN ACCIDENTAL AIR- BAG DEPLOYMENT AND POSSIBLE PERSONAL INJURY.
The ohmmeter test lead connections for each test
are shown in the illustration (Fig. 2).
DR ANTENNA BODY & CABLE (Continued)
the primary antenna cable (integral
NOTE: This model has a two-piece antenna coaxial cable. Tests 2 and 4 must be conducted in two steps to isolate an antenna cable problem. First, test to the antenna body and cable) from the coaxial cable connector behind the right side kick panel to the antenna body. Then, test the secondary antenna cable (instrument panel antenna cable) from the coaxial cable connector behind the right side kick panel to the coaxial cable connector at the radio.
Fig.2AntennaTests-Typical
TEST 1
Test 1 determines if the antenna mast is insulated
from ground. Proceed as follows:
(1) Disconnect and isolate the antenna coaxial
cable connector behind the right side kick panel.
(2) Touch one ohmmeter test lead to the tip of the antenna mast. Touch the other test lead to known ground. Check the ohmmeter reading for continuity. (3) There should be no continuity. If OK, go to Test 2. If not OK, replace the faulty antenna body and cable.
TEST 2
Test 2 checks the antenna conductor components for an open circuit. This test should be performed first on the entire antenna circuit, from the antenna mast to the center conductor of the coaxial cable con- nector at the radio. If an open circuit is detected, each of the three antenna conductor components (antenna mast, antenna body and cable, instrument panel antenna cable) should be isolated and tested individually to locate the exact component that is the source of the open circuit. To begin this test, proceed as follows:
AUDIO
8A - 5
(1) Disconnect the instrument panel antenna cable
coaxial connector from the back of the radio.
(2) Touch one ohmmeter test lead to the tip of the antenna mast. Touch the other test lead to the center conductor pin of the instrument panel antenna cable coaxial connector for the radio. Check the ohmmeter reading for continuity.
(3) There should be continuity. The ohmmeter should register only a fraction of an ohm resistance. High or infinite resistance indicates a damaged or open antenna conductor. If OK, go to Test 3. If not OK, isolate and test each of the individual antenna conductor faulty antenna conductor component.
components. Replace
only the
TEST 3
Test 3 checks the condition of the vehicle body ground connection. To begin this test, proceed as fol- lows:
(1) This test must be performed with the battery positive cable disconnected from the battery. Discon- nect and isolate both battery cables, negative cable first.
(2) Reconnect the battery negative cable. (3) Touch one ohmmeter test lead to a good clean ground point on the vehicle fender. Touch the other test lead to the battery negative terminal post. Check the ohmmeter reading for continuity.
(4) There should be continuity. The ohmmeter should register less than one ohm resistance. High or infinite resistance indicates a loose, corroded, or damaged connection between the battery negative terminal and the vehicle body. If OK, go to Test 4. If not OK, check the battery negative cable connection to the vehicle body and the radio noise suppression ground strap connections to the engine and the vehi- cle body for being loose or corroded. Clean or tighten these connections as required.
TEST 4
Test 4 checks the condition of
the connection between the antenna coaxial cable shield and the vehicle body ground as follows:
(1) Disconnect and isolate the antenna coaxial
cable connector behind the right side kick panel.
(2) Touch one ohmmeter test lead to a good clean ground point on the vehicle fender. Touch the other test lead to the outer crimp on the antenna coaxial cable connector. Check the ohmmeter reading for con- tinuity.
(3) There should be continuity. The ohmmeter should register less than one ohm resistance. High or infinite resistance indicates a loose, corroded, or damaged connection between the antenna body and the vehicle body or between the antenna body and the antenna coaxial cable shield. If not OK, clean the
AUDIO
8A - 6
ANTENNA BODY & CABLE (Continued)antenna body to fender mating surfaces and tighten the antenna cap nut to specifications.
(4) Check the resistance again with an ohmmeter. If the resistance is still more then one ohm, replace the faulty antenna body and cable.
REMOVAL
(1) Disconnect and isolate the battery negative
cable.
(2) Remove the right side kick panel. (3) Disconnect antenna body cable from instru-
ment panel cable.
(4) Securely tie a suitable length of cord or twine to the antenna half of the coaxial cable connector. This cord will be used to pull the cable back into position during installation.
(5) Remove the antenna mast. (6) Remove the antenna cap nut using an antenna
nut wrench (Special Tool C-4816) (Fig. 3).
DR
(6) Install the antenna cap nut. Tighten to 7 N·m
(65 in. lbs.).
(7) Install the antenna mast. (8) Connect the battery negative cable.
INSTRUMENT PANEL ANTENNA CABLE REMOVAL
(1) Disconnect and isolate the battery negative
cable.
(2) Remove the glove box (Refer to 23 - BODY/IN-
STRUMENT PANEL/GLOVE BOX - REMOVAL).
(3) Remove the instrument panel center bezel (Refer to 23 - BODY/INSTRUMENT PANEL/IN- STRUMENT PANEL CENTER BEZEL - REMOVAL). (4) Remove the instrument panel lower right cen- ter bezel (Refer to 23 - BODY/INSTRUMENT PAN- EL/IP REMOVAL).
LOWER RIGHT CENTER BEZEL
(5) Remove the radio (Refer to 8 - ELECTRICAL/
AUDIO/RADIO - REMOVAL).
CAUTION: Pulling the antenna cable straight out of the radio without pulling on the locking antenna connector could damage the cable or radio.
(6) Disconnect the antenna cable by pulling the locking antenna connector away from the radio (Fig. 4)
Fig.4ANTENNATORADIO
1 - RADIO 2 - LOCKING ANTENNA CONNECTOR 3 - INSTRUMENT PANEL ANTENNA CABLE
(7) Remove antenna cable from instrument panel
by pulling on retaining fasteners (Fig. 5).
Fig.3ANTENNABODYANDCABLE
1 - NUT 2 - FENDER 3 - ANTENNA BODY AND CABLE 4 - ADAPTER
(7) Remove the antenna adapter. (8) With the right door open, pull the antenna body assembly out through the opening between the fender and body.
INSTALLATION
(1) Tie the cord that was used during the removal
procedure to the cable being installed.
(2) Using the cord, pull the antenna cable through the hole in the door opening and seat grommet into place.
(3) Connect the antenna body and cable to the
instrument panel cable.
(4) Install the right side kick panel. (5) Insert the antenna body through the hole in
the fender and install adapter.
DR INSTRUMENT PANEL ANTENNA CABLE (Continued)
AUDIO
8A - 7
(PCI) data bus network. All factory-installed receiv- ers are stereo Electronically Tuned Radios (ETR) and include an electronic digital clock function.
These radio receivers can only be serviced by an authorized radio repair station. See the latest War- ranty Policies and Procedures manual for a current listing of authorized radio repair stations.
OPERATION
The radio receiver operates on ignition switched battery current that is available only when the igni- tion switch is in the On or Accessory positions. The electronic digital clock function of the radio operates on fused battery current supplied through the IOD fuse, regardless of the ignition switch position.
For more information on the features, setting pro- cedures, and control functions for each of the avail- able factory-installed radio receivers, refer to the owner’s manual.
REMOVAL
(1) Disconnect and isolate the battery negative
cable.
(2) Remove center instrument panel bezel (Refer to 23 - BODY/INSTRUMENT PANEL/INSTRUMENT PANEL CENTER BEZEL - REMOVAL).
(3) Remove radio mounting screws (Fig. 6).
Fig.5INSTRUMENTPANELANTENNACABLE
1 - INSTRUMENT PANEL ANTENNA CABLE 2 - ANTENNA BODY AND CABLE
INSTALLATION
(1) Install antenna cable to instrument panel by
pressing retaining fasteners into position.
(2) Connect instrument panel antenna cable to
antenna body and cable.
(3) Install radio (Refer to 8 - ELECTRICAL/AU-
DIO/RADIO - INSTALLATION).
(4) Install the instrument panel lower right center bezel (Refer to 23 - BODY/INSTRUMENT PANEL/IP LOWER RIGHT CENTER BEZEL - INSTALLA- TION).
(5) Install the instrument panel center bezel (Refer to 23 - BODY/INSTRUMENT PANEL/INSTRUMENT PANEL CENTER BEZEL - INSTALLATION).
(6) Install the glove box (Refer to 23 - BODY/IN- INSTALLA-
STRUMENT PANEL/GLOVE BOX - TION).
(7) Connect the battery negative cable.
RADIO DESCRIPTION
model include:
ture (RBB sales code)
Available factory-installed radio receivers for this † AM/FM/cassette with CD changer control fea- † AM/FM/cassette/CD/graphic equalizer with CD † AM/FM/CD with CD changer control feature (RBK sales code) † AM/FM/CD with 6 CD changer (RBQ sales code) † AM/FM/cassette/CD (RBY sales code) - export only
changer control feature (RAZ sales code)
All factory-installed radio receivers can communi- cate on the Programmable Communications Interface
Fig.6RADIO
(4) Disconnect electrical harness connector.
CAUTION: Pulling the antenna cable straight out of the radio without pulling on the locking antenna connector could damage the cable or radio.
(5) Disconnect the antenna cable by pulling the locking antenna connector away from the radio (Fig. 7)
AUDIO
8A - 8
RADIO (Continued)Fig.7ANTENNATORADIO
1 - RADIO 2 - LOCKING ANTENNA CONNECTOR 3 - INSTRUMENT PANEL ANTENNA CABLE
INSTALLATION
(1) Install antenna cable to radio. (2) Connect electrical harness connector to radio. (3) Install radio to instrument panel. (4) Install instrument panel center bezel (Refer to 23 - BODY/INSTRUMENT PANEL/INSTRUMENT PANEL CENTER BEZEL - INSTALLATION).
(5) Connect battery negative cable.
RADIO NOISE SUPPRESSION GROUND STRAP DESCRIPTION
Radio noise suppression devices are factory-in- stalled standard equipment on this vehicle. Radio Frequency Interference (RFI) and ElectroMagnetic Interference (EMI) can be produced by any on-board or external source of electromagnetic energy. These electromagnetic energy sources can radiate electro- magnetic signals through the air, or conduct them through the vehicle electrical system.
When the audio system converts RFI or EMI to an audible acoustic wave form, it is referred to as radio noise. This undesirable radio noise is generally man- ifested in the form of “buzzing,” “hissing,” “popping,” “clicking,” “crackling,” and/or “whirring” sounds. In most cases, RFI and EMI radio noise can be sup- pressed using a combination of vehicle and compo- nent grounding, filtering and shielding techniques. This vehicle is equipped with factory-installed radio noise suppression devices that were designed to min- imize exposure to typical sources of RFI and EMI; thereby, minimizing radio noise complaints.
DR
Factory-installed radio noise suppression is accom- plished primarily through circuitry or devices that are integral to the factory-installed radios, audio power amplifiers and other on-board electrical com- ponents such as generators, wiper motors, blower motors, and fuel pumps that have been found to be potential sources of RFI or EMI. External radio noise suppression devices that are used on this vehicle to control RFI or EMI, and can be serviced, include the following: † Engine-to-body ground strap - This length of braided ground strap has an eyelet terminal connec- tor crimped to each end. One end is secured to the engine cylinder head(s). The other is secured to the plenum at the exhaust heat shield forward/outer attaching stud. † Resistor-type spark plugs - This type of spark plug has an internal resistor connected in series between the spark plug terminal and the center elec- trode to help reduce the production of electromag- netic radiation that can result in radio noise.
OPERATION
There are two common strategies that can be used to suppress Radio Frequency Interference (RFI) and ElectroMagnetic Interference (EMI) radio noise. The first suppression strategy involves preventing the production of RFI and EMI electromagnetic signals at their sources. The second suppression strategy involves preventing the reception of RFI and EMI electromagnetic signals by the audio system compo- nents.
The use of braided ground straps in key locations is part of the RFI and EMI prevention strategy. These ground straps ensure adequate ground paths, particularly for high current components such as many of those found in the starting, charging, igni- tion, engine control and transmission control sys- tems. An insufficient ground path for any of these high current components may result in radio noise caused by induced voltages created as the high cur- rent seeks alternative ground paths through compo- nents or circuits intended for use by, or in close proximity to the audio system components or circuits. Preventing the reception of RFI and EMI is accom- plished by ensuring that the audio system compo- nents are correctly installed in the vehicle. Loose, corroded or improperly soldered wire harness connec- tions, improperly routed wiring and inadequate audio system component grounding can all contribute to the reception of RFI and EMI. A properly grounded antenna body and radio chassis, as well as a shielded antenna coaxial cable with clean and tight connec- tions will each help reduce the potential for reception of RFI and EMI.
DR RADIO NOISE SUPPRESSION GROUND STRAP (Continued) REMOVAL
BED TO CAB
AUDIO
8A - 9
(1) Disconnect and isolate the battery negative
cable.
(2) Remove the attaching bolts and strap (Fig. 8).
Fig.10GROUNDSTRAPTOHEATSHIELD
1 - STUD 2 - GROUND STRAP 3 - NUT
ENGINE TO HEAT SHIELD - 4.7L AND 5.7L ENGINE (1) Disconnect and isolate the battery negative
(2) Remove the attaching bolts from the cylinder
cable.
heads (Fig. 11).
Fig.8BEDTOCABGROUNDSTRAP
1 - BED 2 - CAB 3 - GROUND STRAP 4 - MOUNTING BOLTS
ENGINE TO HEAT SHIELD - 3.7L ENGINE
(1) Disconnect and isolate the battery negative
(2) Remove the attaching bolts from the cylinder
cable.
heads (Fig. 9).
Fig.9ENGINEGROUNDSTRAP-3.7L
1 - GROUND STRAP 2 - MOUNTING BOLTS
(3) Remove nut from heat shield and remove strap
(Fig. 10).
Fig.11ENGINEGROUNDSTRAP-4.7LAND5.7L 1 - GROUND STRAP 2 - MOUNTING BOLTS
(3) Remove nut from heat shield and remove strap
(Fig. 10).
ENGINE TO HEAT SHIELD - 5.9L AND 8.0L ENGINE (1) Disconnect and isolate the battery negative
cable.
heads (Fig. 12).
(Fig. 10).
(2) Remove the attaching bolts from the cylinder
(3) Remove nut from heat shield and remove strap
AUDIO
8A - 10
RADIO NOISE SUPPRESSION GROUND STRAP (Continued)DR
Fig.12ENGINEGROUNDSTRAP-5.9L(8.0L
SIMILAR)
1 - GROUND STRAP 2 - MOUNTING BOLTS
INSTALLATION
BED TO CAB
(1) Install the ground strap and retaining bolts.
Tighten to 5 N·m (45 in. lbs.).
(2) Connect the battery negative cable.
ENGINE TO HEAT SHIELD
(1) Install the retaining nut and ground strap to
the plenum. Tighten to 8 N·m (70 in. lbs.).
(2) Install the retaining bolt and ground strap to the engine cylinder heads. Tighten to 12 N·m (106 in. lbs.).
(3) Connect the battery negative cable.
REMOTE SWITCHES DESCRIPTION
A remote radio control switch option is available on some models. Two rocker-type switches are mounted on the back (instrument panel side) of the steering wheel spokes (Fig. 13). The switch on the left spoke is the seek switch and has seek up, seek down, and preset station advance functions. The switch on the right spoke is the volume control switch and has vol- ume up, and volume down functions. The switch on the right spoke also includes a “mode” control that allows the driver to sequentially select AM radio, FM radio, cassette player, CD player or CD changer (if equipped).
Fig.13RemoteRadioSwitchOperationalView
1 - PRESET SEEK 2 - SEEK UP 3 - VOLUME UP 4 - MODE 5 - VOLUME DOWN 6 - SEEK DOWN
OPERATION
open,
are normally
The six switches in the two remote radio switch resistor multiplexed units momentary switches that are hard wired to the Inte- grated Power Module (IPM) through the clockspring. The IPM sends a five volt reference signal to both switch units on one circuit, and senses the status of all of the switches by reading the voltage drop on a second circuit.
When the IPM senses an input (voltage drop) from any one of the remote radio switches, it sends the proper switch status messages on the Programmable Communication Interface (PCI) data bus network to the radio receiver. The electronic circuitry within the radio receiver is programmed to respond to these remote radio switch status messages by adjusting the radio settings as requested. For diagnosis of the IPM or the PCI data bus, the use of a DRB IIIt scan tool and the proper Diagnostic Procedures manual are recommended.
For more information on the features and control functions for each of the remote radio switches, refer to the owner’s manual.
DR REMOTE SWITCHES (Continued) DIAGNOSIS AND TESTING - REMOTE SWITCHES
Any diagnosis of the Audio system should begin with the use of the DRB IIIt diagnostic tool. For information on the use of the DRB IIIt, refer to the appropriate Diagnostic Service Manual.
For complete circuit diagrams, refer to the appro- priate 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 connec- tors, splices and grounds.
WARNING: DISABLE THE AIRBAG SYSTEM BEFORE ATTEMPTING ANY STEERING WHEEL, STEERING COLUMN, SEAT BELT TENSIONER, SIDE AIRBAG, OR INSTRUMENT PANEL COMPONENT DIAGNOSIS OR SERVICE. DISCONNECT AND ISO- LATE THE BATTERY NEGATIVE (GROUND) CABLE, THEN WAIT TWO MINUTES FOR THE AIRBAG SYS- TEM CAPACITOR TO DISCHARGE BEFORE PER- FORMING FURTHER DIAGNOSIS OR SERVICE. THIS IS THE ONLY SURE WAY TO DISABLE THE AIRBAG SYSTEM. FAILURE TO TAKE THE PROPER PRE- CAUTIONS COULD RESULT IN ACCIDENTAL AIR- BAG DEPLOYMENT AND POSSIBLE PERSONAL INJURY.
(1) Disconnect and isolate the battery negative cable. Remove the remote radio switch(es) (Fig. 14) from the steering wheel (Refer to 8 - ELECTRICAL/ AUDIO/REMOTE SWITCHES - REMOVAL).
Fig.14RemoteRadioSwitches
1 - BLACK (LEFT) SWITCH 2 - WHITE (RIGHT) SWITCH
AUDIO
8A - 11
(2) Use an ohmmeter to check the switch resis- tances as shown in the Remote Radio Switch Test chart. If the remote radio switch resistances check OK, go to Step 3. If not OK, replace the faulty switch.
REMOTE RADIO SWITCH TEST TABLE
Switch Right (White) Right (White) Right (White)
Left
(Black)
Left
(Black)
Left
(Black)
Switch Position
Volume Up
Volume Down
Mode Advance
Seek Up
Seek Down
Resistance
1.210 Kilohms
± 1%
3.010 Kilohms
± 1%
0.0511 Kilohms
± 1%
0.261 Kilohms
± 1%
0.681 Kilohms
± 1%
Pre-Set Station
0.162 Kilohms
Advance
± 1%
(3) Reconnect the battery negative cable. Turn the ignition switch to the On position. Check for 5 volts at the radio control mux circuit cavities of the steer- ing wheel wire harness connectors for both remote radio switches. If OK, go to Step 4. If not OK, repair the open or shorted radio control mux circuit to the Integrated Power Module (IPM) as required.
(4) Disconnect and isolate the battery negative cable. Disconnect the 22-way instrument panel wire harness connector from the IPM. Check for continu- ity between the remote radio switch ground circuit cavities of the steering wheel wire harness connec- tors for both remote radio switches and a good ground. There should be no continuity. If OK, go to Step 5. If not OK, repair the shorted remote radio switch ground circuit to the IPM as required.
connectors
(5) Check for continuity between the remote radio switch ground circuit cavities of the steering wheel wire harness for both remote radio switches and the 22-way instrument panel wire har- ness connector for the IPM. There should be continu- ity. If OK, refer to the proper Diagnostic Procedures manual to test the IPM and the PCI data bus. If not OK, repair the open remote radio switch ground cir- cuit as required.
AUDIO
8A - 12
REMOTE SWITCHES (Continued) REMOVALWARNING: DISABLE THE AIRBAG SYSTEM BEFORE ATTEMPTING ANY STEERING WHEEL, STEERING COLUMN, SEAT BELT TENSIONER, SIDE AIRBAG, OR INSTRUMENT PANEL COMPONENT DIAGNOSIS OR SERVICE. DISCONNECT AND ISO- LATE THE BATTERY NEGATIVE (GROUND) CABLE, THEN WAIT TWO MINUTES FOR THE AIRBAG SYS- TEM CAPACITOR TO DISCHARGE BEFORE PER- FORMING FURTHER DIAGNOSIS OR SERVICE. THIS IS THE ONLY SURE WAY TO DISABLE THE AIRBAG SYSTEM. FAILURE TO TAKE THE PROPER PRE- CAUTIONS COULD RESULT IN ACCIDENTAL AIR- BAG DEPLOYMENT AND POSSIBLE PERSONAL INJURY.
(1) Disconnect and isolate the battery negative
cable.
(2) Remove the driver airbag from the vehicle (Refer to 8 - ELECTRICAL/RESTRAINTS/DRIVER AIRBAG - REMOVAL).
(3) Remove the speed control switches (Refer to 8 -
CONTROL/SWITCH
ELECTRICAL/SPEED REMOVAL).
(4) Unplug the wire harness connector from the
remote radio switch(es).
Fig.15REMOTESWITCHES
1 - REMOTE SWITCH 2 - SPEED CONTROL SWITCH 3 - BOLT
(5) Depress the tabs on each side of each switch and push the switch through the rear steering wheel cover (Fig. 15).
INSTALLATION
WARNING: DISABLE THE AIRBAG SYSTEM BEFORE ATTEMPTING ANY STEERING WHEEL, STEERING COLUMN, SEAT BELT TENSIONER, SIDE
DR
AIRBAG, OR INSTRUMENT PANEL COMPONENT DIAGNOSIS OR SERVICE. DISCONNECT AND ISO- LATE THE BATTERY NEGATIVE (GROUND) CABLE, THEN WAIT TWO MINUTES FOR THE AIRBAG SYS- TEM CAPACITOR TO DISCHARGE BEFORE PER- FORMING FURTHER DIAGNOSIS OR SERVICE. THIS IS THE ONLY SURE WAY TO DISABLE THE AIRBAG SYSTEM. FAILURE TO TAKE THE PROPER PRE- CAUTIONS COULD RESULT IN ACCIDENTAL AIR- BAG DEPLOYMENT AND POSSIBLE PERSONAL INJURY.
(1) Install remote radio switch to the steering
wheel.
switch.
(2) Connect the wire harness to the remote radio
(3) Install the speed control switches (Refer to 8 -
CONTROL/SWITCH
ELECTRICAL/SPEED INSTALLATION).
(4) Install the driver airbag (5) Connect the battery negative cable.
SPEAKER DESCRIPTION
STANDARD
The standard equipment speaker system includes speakers in four locations. One 15.2 X 22.8 centime- ter (6 X 9 inch) full-range speaker is located in each front door. There is also one full-range 13.3 centime- ter (5.25 inch) diameter full-range speaker located in each rear door.
PREMIUM
The optional premium speaker system features eleven Premium model speakers in seven locations. Each of the standard speakers is replaced with Pre- mium model speakers. One 8.8 centimeter (3.50 inch) diameter speaker is located on each end of the instrument panel top pad. One 6.3 centimeter (2.50
inch) diameter speaker is located in the center of the instrument panel top pad. One 15.2 X 22.8 centime- ter (6 X 9 inch) Premium speaker is located in each front door. There is also one coaxial 13.3 centimeter (5.25 inch) diameter Premium full-range speaker located in each rear door. The premium speaker sys- tem also includes a power amplifier mounted behind the glove box. The total available power of the pre- mium speaker system is 240 watts.OPERATION
Two wires connected to each speaker, one feed cir- cuit (+) and one return circuit (–), allow the audio output signal electrical current to flow through the voice coil. For complete circuit diagrams, refer to the
DR SPEAKER (Continued)
appropriate wiring information. The wiring informa- tion includes wiring diagrams, proper wire and con- nector repair procedures, details of wire harness routing and retention, connector pin-out information and location views for the various wire harness con- nectors, splices and grounds.
DIAGNOSIS AND TESTING - SPEAKER
Any diagnosis of the Audio system should begin with the use of the DRB IIIt diagnostic tool. For information on the use of the DRB IIIt, refer to the appropriate Diagnostic Service Manual.
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: DISABLE THE AIRBAG SYSTEM BEFORE ATTEMPTING ANY STEERING WHEEL, STEERING COLUMN, SEAT BELT TENSIONER, SIDE AIRBAG, OR INSTRUMENT PANEL COMPONENT DIAGNOSIS OR SERVICE. DISCONNECT AND ISO- LATE THE BATTERY NEGATIVE (GROUND) CABLE, THEN WAIT TWO MINUTES FOR THE AIRBAG SYS- TEM CAPACITOR TO DISCHARGE BEFORE PER- FORMING FURTHER DIAGNOSIS OR SERVICE. THIS IS THE ONLY SURE WAY TO DISABLE THE AIRBAG SYSTEM. FAILURE TO TAKE THE PROPER PRE- CAUTIONS COULD RESULT IN ACCIDENTAL AIR- BAG DEPLOYMENT AND POSSIBLE PERSONAL INJURY.
CAUTION: The speaker output of the radio is a “floating ground” system. Do not allow any speaker lead to short to ground, as damage to the radio and/or amplifier may result.
(1) If all speakers are inoperative, check the fuses in the Integrated Power Module (IPM). If OK, go to Step 2. If not OK, repair the shorted circuit or com- ponent as required and replace the faulty fuse.
(2) Check the amplifier fuse (if equipped) in the IPM. If OK, go to Step 3. If not OK, repair the shorted circuit or component as required and replace the faulty fuse.
(3) Turn the ignition switch to the ON position. Turn the radio receiver ON. Adjust the balance and fader control controls to check the performance of each individual speaker. Note the speaker locations that are not performing correctly. Go to Step 4.
(4) Turn the radio receiver OFF. Turn the ignition OFF. Disconnect and isolate the battery negative
AUDIO
8A - 13
cable. If vehicle is not equipped with a amplifier, remove the radio receiver. If vehicle is equipped with an amplifier. disconnect wire harness connector at output side of amplifier. Go to Step 5.
(5) Check both the speaker feed (+) circuit and return (-) circuit cavities for the inoperative speaker at the radio receiver wire harness connector for con- tinuity to ground. There should be no continuity. If OK, go to Step 6. If not OK, repair the shorted speaker feed (+) and/or return (-) circuits(s) to the speaker as required.
(6) Disconnect wire harness connector at the inop- erative speaker. Check for continuity between the speaker feed (+) circuit cavities of the radio receiver wire harness connector or if equipped, the amplifier wire harness connector and the speaker wire harness connector. Repeat the check between the speaker return (-) circuit cavities of the radio receiver wire harness connector and the speaker wire harness con- nector. In each case, there should be continuity. If OK, replace the faulty speaker. If not OK, repair the open speaker feed (+) and/or return (-) circuits(s) as required.
REMOVAL
FRONT DOOR SPEAKER
(1) Disconnect and isolate the battery negative
cable.
(2) Remove front door trim panel (Refer to 23 - BODY/DOOR - FRONT/TRIM PANEL - REMOVAL).
(3) Remove speaker mounting screws (Fig. 16).
Fig.16FRONTDOORSPEAKER
(4) Disconnect electrical harness connector and
remove speaker.
AUDIO
8A - 14
SPEAKER (Continued) INSTRUMENT PANEL CENTER SPEAKERREAR CAB SIDE SPEAKER
DR
(1) Disconnect and isolate the battery negative
(1) Disconnect and isolate the battery negative
cable.
cable.
(2) Remove instrument panel top cover (Refer to 23 - BODY/INSTRUMENT PANEL/INSTRUMENT PANEL TOP COVER - REMOVAL).
(3) Remove speaker mounting screws (Fig. 17).
(2) Remove B-pillar lower trim (Refer to 23 - TRIM -
LOWER
BODY/INTERIOR/B-PILLAR REMOVAL).
(3) Remove speaker mounting screws (Fig. 19).
Fig.17INSTRUMENTPANELCENTERSPEAKER (4) Disconnect electrical harness connector and
remove speaker.
Fig.19REARCABSIDESPEAKER
(4) Disconnect electrical harness connector and
remove speaker.
INSTRUMENT PANEL END SPEAKER
REAR DOOR SPEAKER
(1) Disconnect and isolate the battery negative
(1) Disconnect and isolate the battery negative
cable.
(2) Remove instrument panel top cover (Refer to 23 - BODY/INSTRUMENT PANEL/INSTRUMENT PANEL TOP COVER - REMOVAL).
(3) Remove speaker mounting screws (Fig. 18)
cable.
(2) Remove rear door trim panel (Refer to 23 - BODY/DOORS - REAR/TRIM PANEL - REMOVAL).
(3) Remove speaker mounting screws (Fig. 20).
Fig.18INSTRUMENTPANELENDSPEAKER
(4) Disconnect electrical harness connector and
remove speaker.
Fig.20REARDOORSPEAKER
(4) Disconnect electrical harness connector and
remove speaker.
DR SPEAKER (Continued) INSTALLATION
FRONT DOOR SPEAKER
(1) Connect
electrical harness
connector
and
install speaker.
(2) Install front door trim panel (Refer to 23 - BODY/DOOR - FRONT/TRIM PANEL - INSTALLA- TION).
(3) Connect battery negative cable.
INSTRUMENT PANEL CENTER SPEAKER
(1) Connect
electrical harness
connector
and
install speaker.
(2) Install instrument panel top cover (Refer to 23
PANEL/INSTRUMENTPANEL TOP COVER - INSTALLATION).
BODY/INSTRUMENT
(3) Connect battery negative cable.
INSTRUMENT PANEL END SPEAKER
(1) Connect
install speaker.
electrical harness
connector
and
AUDIO
8A - 15
(2) Install instrument panel top cover (Refer to 23
PANEL/INSTRUMENTPANEL TOP COVER - INSTALLATION).
BODY/INSTRUMENT
(3) Connect battery negative cable.
REAR CAB SIDE SPEAKER
(1) Connect
electrical harness
connector
and
install speaker.
(2) Install B-pillar lower trim (Refer to 23 - BODY/ INTERIOR/B-PILLAR LOWER TRIM - INSTALLA- TION).
(3) Connect battery negative cable.
REAR DOOR SPEAKER
install speaker.
(1) Connect
electrical harness
connector
and
(2) Install rear door trim panel
(Refer to 23 - BODY/DOORS - REAR/TRIM PANEL - INSTALLA- TION).
(3) Connect battery negative cable.
DR
CHIME/BUZZER
8B - 1
CHIME/BUZZER
TABLE OF CONTENTS
CHIME/BUZZER
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . 1
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1DIAGNOSIS AND TESTING - CHIME
CONDITIONS . . . . . . . . . . . . . . . . . . . . . . . . . . 2
page
page
CHIME/BUZZER DESCRIPTION
The chime module is located within the instrument cluster and is not serviceable. The chime system pro- vides the driver with warning chimes for:
† Air Bag † Seat Belt † Low Fuel † Door Ajar † Low Wash † Park Brake † Over Speed † Turn Signal On † Key-In Ignition † Exterior Lamps ON † Warning Lamp Announcement † Transmission Over Temperature
OPERATION
FASTEN SEAT BELT
The seat belt reminder system uses both visual and audible signals. The Instrument Cluster moni- tors the driver seat belt buckle switch. When the ignition switch transitions from OFF to RUN and the driver seat belt has not been buckled, the Instrument Cluster will illuminate the seat belt indicator lamp and sound the chime. The system will always illumi- nate the seat belt reminder lamp for four to eight seconds when the ignition switch is turned to the ON position. The CHIME will sound during the same time interval if the driver’s seat belt is not fastened. The warning lamp will remain illuminated as long as the seat belt remains unbuckled, and the ignition switch is in the RUN position. Passenger seat belts are not connected to the system.
HEADLAMPS REMINDER
The Instrument Cluster monitors the multiplex headlamp switch. The headlamp audible warning will alert the driver that the exterior lamps have been left on. If the ignition switch is left off, the driver’s door open, and the headlamp switch is in the park
lamp or headlamp position, the chime will sound until the headlamp switch is turned off, the door is closed or the battery protection time out expires.
KEY IN IGNITION REMINDER
The Instrument Cluster monitors the ignition switch. The chime will activate if the drivers door is opened and the key is in the ignition switch, with the ignition switch in either the OFF, LOCK, or the accessory (ACC) position. The chime will continue until the key is removed from the ignition switch or the door is closed.
DOOR AJAR CHIME
The Instrument Cluster monitors the door ajar switches. A chime will sound once when the door is opened, the ignition is in RUN position and vehicle speed is present.
TURN SIGNAL ON
The Instrument Cluster monitors the multiplex multifunction switch. The instrument cluster shall remind the driver that either turn signal has been left on by a continuous chime after the turn signal indicator is left ON for 1.0 miles and the vehicle speed is 15 mph or greater.
LOW FUEL REMINDER
When the fuel
level drops to approximately 1/8
tank, the fuel symbol will light and a single chime will sound. The light will remain on until fuel is added.OVER SPEED
During any ignition ON, the Instrument Cluster maintains the most recently received speed. If the vehicle speed exceeds a preprogramed limit set in the instrument cluster it will activate a single chime.
WARNING LAMP ANNOUNCEMENT
The Instrument Cluster monitors critical engine and transmission system parameters. If any of the systems are out of their operating parameters, the instrument cluster will illuminate a lamp and acti- vate and audible chime.
CHIME/BUZZER
8B - 2
CHIME/BUZZER (Continued) LOW WASH INDICATORThe Front Control Module (FCM) monitors the washer reservoir. When the fluid is low the FCM transmits a J1850 message over the bus. The instru- ment cluster will chime and illuminate the LOW WASH indicator. The indicator will remain on until the fluid level is corrected.
AIR BAG
The Instrument Cluster monitors air bag system via the J1850 bus communications from the air bag module. The air bag module will transmit a message once per second, over the J1850 bus, as to whether the warning indicator should be on or off. The warn- ing indicator indicates a part of the air bag system is inoperative and needs to be serviced. It does not indicate that the air bag system will not deploy. If the instrument cluster does not receive a message from the air bag module for 3 consecutive seconds, the Instrument will illuminate the warning indicator.
DR
The air bag module transmits a J1850 message requesting the instrument cluster to perform a bulb check each time the ignition is turned to the on posi- tion
DIAGNOSIS AND TESTING - CHIME CONDITIONS
NOTE: The Chime/Buzzer Warning System is Diag- nosed using a DRBIIIT Scan Tool. Refer to the proper Body Diagnostic Procedures Manual.
Visually inspect the related wiring harness connec- tors. Look for broken, bent, pushed out, or corroded terminals. If any of the conditions are present, repair as necessary. If not use the DRBIIIt scan tool and the proper Body Diagnostic Procedure manual. For to Instrument complete circuit diagrams, Cluster in Wiring Systems.
refer
DR
ELECTRONIC CONTROL MODULES
8E - 1
ELECTRONIC CONTROL MODULES
TABLE OF CONTENTS
page
page
COMMUNICATION
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . 1
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2CONTROLLER ANTILOCK BRAKE
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . 3
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . 3DATA LINK CONNECTOR
DESCRIPTION - DATA LINK CONNECTOR . . . . . 3
. . . . . . 3
OPERATION - DATA LINK CONNECTORENGINE CONTROL MODULE
DESCRIPTION - ECM . . . . . . . . . . . . . . . . . . . . . 4
OPERATION - ECM . . . . . . . . . . . . . . . . . . . . . . 4
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . 5FRONT CONTROL MODULE
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . 5
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
DIAGNOSIS AND TESTING - FRONTCONTROL MODULE
. . . . . . . . . . . . . . . . . . . . 6
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . 6HEATED SEAT MODULE
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . 6
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
DIAGNOSIS AND TESTING - HEATED SEATMODULE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . 7POWERTRAIN CONTROL MODULE
DESCRIPTION
DESCRIPTION - PCM . . . . . . . . . . . . . . . . . . . 8
COMMUNICATION DESCRIPTION
The DaimlerChrysler Programmable Communica- tion Interface (PCI) data bus system is a single wire multiplex system used for vehicle communications on many DaimlerChrysler Corporation vehicles. Multi-
DESCRIPTION - MODES OF OPERATION . . . . 8
DESCRIPTION - 5 VOLT SUPPLIES . . . . . . . 10
DESCRIPTION - IGNITION CIRCUIT SENSE . 10
. . . . . . 10
DESCRIPTION - POWER GROUNDS DESCRIPTION - SENSOR RETURN . . . . . . . 10OPERATION
OPERATION - PCM . . . . . . . . . . . . . . . . . . . . 11
OPERATION - 5 VOLT SUPPLIES . . . . . . . . . 11
OPERATION - IGNITION CIRCUIT SENSE . . . 12
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . 12SENTRY KEY IMMOBILIZER MODULE
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . 13
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
STANDARD PROCEDURE - PCM/SKIMPROGRAMMING . . . . . . . . . . . . . . . . . . . . . . 14
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . 15TRANSFER CASE CONTROL MODULE
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . 15
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . 15TRANSMISSION CONTROL MODULE
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . 19
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
STANDARD PROCEDURESTANDARD PROCEDURE - TCM QUICK
LEARN. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
STANDARD PROCEDURE - DRIVE LEARN . . 21plexing is a system that enables the transmission of several messages over a single channel or circuit. All DaimlerChrysler vehicles use this principle for com- munication between various microprocessor-based electronic control modules. The PCI data bus exceeds the Society of Automotive Engineers (SAE) J1850
Standard for Class B Multiplexing.ELECTRONIC CONTROL MODULES
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COMMUNICATION (Continued)Many of the electronic control modules in a vehicle require information from the same sensing device. In the past, if information from one sensing device was required by several controllers, a wire from each con- troller needed to be connected in parallel to that sen- sor. In addition, each controller utilizing analog sensors required an Analog/Digital (A/D) converter in order to 9read9 these sensor inputs. Multiplexing reduces wire harness complexity, sensor current loads and controller hardware because each sensing device is connected to only one controller, which reads and distributes the sensor information to the other controllers over the data bus. Also, because each controller on the data bus can access the con- troller sensor inputs to every other controller on the data bus, more function and feature capabilities are possible.
In addition to reducing wire harness complexity, component sensor current loads and controller hard- ware, multiplexing offers a diagnostic advantage. A multiplex system allows the information flowing between controllers to be monitored using a diagnos- tic scan tool. The DaimlerChrysler system allows an electronic control module to broadcast message data out onto the bus where all other electronic control modules can 9hear9 the messages that are being sent. When a module hears a message on the data bus that it requires, it relays that message to its micro- processor. Each module ignores the messages on the data bus that are being sent to other electronic con- trol modules.
OPERATION
Data exchange between modules is achieved by serial transmission of encoded data over a single wire broadcast network. The wire colors used for the PCI data bus circuits are yellow with a violet tracer, or violet with a yellow tracer, depending upon the appli- cation. The PCI data bus messages are carried over the bus in the form of Variable Pulse Width Modu- lated (VPWM) signals. The PCI data bus speed is an average 10.4 Kilo-bits per second (Kbps). By compar- ison, the prior two-wire Chrysler Collision Detection (CCD) data bus system is designed to run at 7.8125
Kbps.The voltage network used to transmit messages requires biasing and termination. Each module on the PCI data bus system provides its own biasing and termination. Each module (also referred to as a node) terminates the bus through a terminating resistor and a terminating capacitor. There are two types of nodes on the bus. The dominant node termi- nates the bus through a 1 KW resistor and a 3300 pF capacitor. The Powertrain Control Module (PCM) is the only dominant node for the PCI data bus system.
DR
A standard node terminates the bus through an 11
KW resistor and a 330 pF capacitor.The modules bias the bus when transmitting a message. The PCI bus uses low and high voltage lev- els to generate signals. Low voltage is around zero volts and the high voltage is about seven and one- half volts. The low and high voltage levels are gener- ated by means of variable-pulse width modulation to form signals of varying length. The Variable Pulse Width Modulation (VPWM) used in PCI bus messag- ing is a method in which both the state of the bus and the width of the pulse are used to encode bit information. A 9zero9 bit is defined as a short low pulse or a long high pulse. A 9one9 bit is defined as a long low pulse or a short high pulse. A low (passive) state on the bus does not necessarily mean a zero bit. It also depends upon pulse width. If the width is short, it stands for a zero bit. If the width is long, it stands for a one bit. Similarly, a high (active) state does not necessarily mean a one bit. This too depends upon pulse width. If the width is short, it stands for a one bit. If the width is long, it stands for a zero bit. In the case where there are successive zero or one data bits, both the state of the bus and the width of the pulse are changed alternately. This encoding scheme is used for two reasons. First, this ensures that only one symbol per transition and one transi- tion per symbol exists. On each transition, every transmitting module must decode the symbol on the bus and begin timing of the next symbol. Since tim- ing of the next symbol begins with the last transition detected on the bus, all of the modules are re-syn- chronized with each symbol. This ensures that there are no accumulated timing errors during PCI data bus communication.
The second reason for this encoding scheme is to guarantee that the zero bit is the dominant bit on the bus. When two modules are transmitting simul- taneously on the bus, there must be some form of arbitration to determine which module will gain con- trol. A data collision occurs when two modules are transmitting different messages at the same time. When a module is transmitting on the bus, it is read- ing the bus at the same time to ensure message integrity. When a collision is detected, the module that transmitted the one bit stops sending messages over the bus until the bus becomes idle.
Each module is capable of transmitting and receiv- ing data simultaneously. The typical PCI bus mes- sage has the following four components: † Message Header - One to three bytes in length. The header contains information identifying the mes- sage type and length, message priority, target mod- ule(s) and sending module. † Data Byte(s) - This is the actual message that
is being sent.
DR COMMUNICATION (Continued) † Cyclic Redundancy Check (CRC) Byte - This byte is used to detect errors during a message trans- mission. † In-Frame Response (IFR) byte(s)
If a response is required from the target module(s), it can be sent during this frame. This function is described in greater detail in the following paragraph.
The IFR consists of one or more bytes, which are transmitted during a message. If the sending module requires information to be received immediately, the target module(s) can send data over the bus during the original message. This allows the sending module to receive time-critical information without having to wait for the target module to access the bus. After the IFR is received, the sending module broadcasts an End of Frame (EOF) message and releases control of the bus.
The PCI data bus can be monitored using the DRBIIIt scan tool. It is possible, however, for the bus to pass all DRBIIIt tests and still be faulty if the voltage parameters are all within the specified range and false messages are being sent.
CONTROLLER ANTILOCK BRAKE DESCRIPTION
The Controler Antilock Brake (CAB) is mounted to the Hydraulic Control Unit (HCU) and operates the ABS system (Fig. 1).
ELECTRONIC CONTROL MODULES
8E - 3
OPERATION
The CAB voltage source is through the ignition switch in the RUN position. The CAB contains a self check program that illuminates the ABS warning light when a system fault is detected. Faults are stored in a diagnostic program memory and are accessible with the DRB III scan tool. ABS faults remain in memory until cleared, or until after the vehicle is started approximately 50 times. Stored faults are not erased if the battery is disconnected.
NOTE: If the CAB is being replaced with a new CAB is must be reprogrammed with the use of a DRB III.
REMOVAL
(1) Remove the negative battery cable from the
battery.
(2) Pull up on the CAB harness connector release
and remove connector.
(3) Remove the CAB mounting bolts. (4) Remove the pump connector from the CAB. (5) Remove the CAB from the HCU.
INSTALLATION
NOTE: If the CAB is being replaced with a new CAB is must be reprogrammed with the use of a DRB III.
(1) Install CAB to the HCU. (2) Install the pump connector to the CAB. (3) Install mounting bolts. Tighten to 2 N·m (16 in.
lbs.).
(4) Install the wiring harness connector to the CAB and push down on the release to secure the con- nector.
(5) Install negative battery cable to the battery.
DATA LINK CONNECTOR DESCRIPTION - DATA LINK CONNECTOR
The Data Link Connector (DLC) is located at the lower edge of the instrument panel near the steering column.
OPERATION - DATA LINK CONNECTOR
The 16–way data link connector (diagnostic scan tool connector) links the Diagnostic Readout Box (DRB) scan tool or the Mopar Diagnostic System (MDS) with the Powertrain Control Module (PCM).
Fig.1HYDRAULICCONTROLUNIT
1 - HYDRAULIC CONTROL UNIT 2 - MOUNTING BOLTS
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ELECTRONIC CONTROL MODULES
DR
ENGINE CONTROL MODULE DESCRIPTION - ECM
