Body Control Computer: Other Chrysler LHS II

IDENTIFYING VEHICLE EQUIPMENT & SYSTEM PROBLEMS

Note. For connector terminal identification, see CONNECTOR IDENTIFICATION in BODY CONTROL COMPUTER - INTRODUCTION article.

1. Connect scan tool to Data Link Connector (DLC). DLC is located under instrument cluster, right of steering column. If scan tool screen is blank, see appropriate VEHICLE COMMUNICATIONS article. If scan tool is not blank, go to next step.
2. Using scan tool, read body DTCs (fault messages). If any fault messages are displayed, go to «SYSTEM ID TEST 1B»(ref-679-S30986765722000031300000) . If no fault messages are displayed, see «SYSTEM DIAGNOSTIC TEST DIRECTORY»(ref-679-S18675499562000031300000) table for specific system diagnosis. When diagnosing a vehicle with many apparent failures, start at top of table and perform indicated tests. Failures may occur separately or in various combinations. After repairs, ensure specific failure or group of failures have been corrected.

SYSTEM DIAGNOSTIC TEST DIRECTORY (1)

CHIME INOPERATIVE AT ALL TIMES

Note. Perform CHIME TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-2A after each repair.

1. Turn ignition on. Ensure all doors are closed. Using scan tool, actuate chime. If chime does not sound, replace Body Control Module (BCM). BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1) If chime sounds, go to next step.
2. Using scan tool, stop actuating chime. Turn ignition off. Remove key from ignition switch. Turn headlights on and open left front door. If chime does not sound, go to «CHIME TEST 3A»(ref-679-S21964966282000031300000). If chime sounds, go to next step.
3. Turn headlights off. Ensure left front seat belt is unfastened. Close left front door. Insert key in ignition switch. Turn ignition on. If chime does not sound, go to «CHIME TEST 4A»(ref-679-S07593444462000031300000). If chime sounds, go to next step.
4. Turn ignition off. Leave key in ignition switch. Open left front door. If chime does not sound, go to «CHIME TEST 5A»(ref-679-S14266779322000031300000). If chime sounds, go to next step.
5. Turn ignition on. Press any key on Overhead Travel Information System (OTIS) and Automatic Temperature Control (ATC). If chime does not sound, go to «CHIME TEST 6A»(ref-679-S32456351302000031300000). If chime sounds, system is currently operating properly.

Scheme 1

CHIME INOPERATIVE WITH EXTERNAL LAMPS ON

Note. Perform CHIME TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-2A after each repair.

1. Turn headlights on. Using scan tool, read headlight status. If scan tool displays HEADLAMPS ON, go to step 3. If scan tool does not display HEADLAMPS ON, go to next step.
2. Turn headlights off. Turn ignition off. Disconnect Body Control Module (BCM) Black 24-pin connector. BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1) Turn headlights on. Go to next step.
3. Using external ohmmeter, measure resistance between terminals No. 2 (Yellow wire) and No. 19 (White wire) on BCM Black harness connector. If resistance is 200-240 ohms, replace BCM. If resistance is not 200-240 ohms, go to «EXTERIOR LIGHT TEST 1A»(ref-679-S24092091872000031300000).
4. Ensure left front door is open. Using scan tool, read left front door ajar switch status. If scan tool displays LFDOOR AJAR: CLOSED, replace BCM. If scan tool does not display LFDOOR AJAR: CLOSED, go to «DOOR AJAR TEST 1A»(ref-679-S14844634192000031300000).

CHIME INOPERATIVE WITH SEAT BELT UNFASTENED

Note. Perform CHIME TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-2A after each repair.

1. Ensure left front seat belt is unfastened and fully retracted. Using scan tool, read seat belt switch status. If scan tool does not display SEAT BELT: OPEN, go to «CHIME TEST 4B»(ref-679-S12104229042000031300000). If scan tool displays SEAT BELT: OPEN, go to next step.
2. Fasten left front seat belt. If scan tool does not display SEAT BELT: CLOSED, go to «CHIME TEST 4C»(ref-679-S36967876942000031300000). If scan tool displays SEAT BELT: CLOSED, replace BCM. BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1)

OPEN SEAT BELT SWITCH CIRCUIT

Note. Perform CHIME TEST 4A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-2A after each repair.

1. Disconnect driver's seat belt switch connector. Connect jumper wire between harness connector terminals. Using scan tool, read seat belt switch status. If scan tool displays SEAT BELT: CLOSED, replace driver's seat belt switch. If scan tool does not display SEAT BELT: CLOSED, go to next step.
2. Move jumper wire lead from terminal No. 2 (Black wire) to chassis ground. Using scan tool, read seat belt switch status. If scan tool displays SEAT BELT: CLOSED, repair open Black wire. If scan tool does not display SEAT BELT: CLOSED, go to next step.
3. Access Body Control Module (BCM). BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1) Backprobe jumper wire between ground and terminal No. 15 (Light Green/Red wire) on BCM Blue 16-pin connector C4. Using scan tool, read seat belt switch status. If scan tool displays SEAT BELT: CLOSED, repair open Light Green/Red wire. If scan tool does not display SEAT BELT: CLOSED, replace BCM.

Note. Perform CHIME TEST 4A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-2A after each repair.

1. Turn ignition on. Ensure driver's seat belt is unfastened. Using scan tool, read seat belt switch status. If scan tool displays SEAT BELT: OPEN, go to next step. If scan tool does not display SEAT BELT: OPEN, go to «CHIME TEST 4B»(ref-679-S12104229042000031300000).
2. Fasten driver's seat belt. Read seat belt switch status. If scan tool displays SEAT BELT: CLOSED, system is currently operating correctly. If scan tool does not display SEAT BELT: CLOSED, go to next step.
3. Disconnect driver's seat belt switch connector. Read seat belt switch status. If scan tool displays SEAT BELT: CLOSED, go to next step. If scan tool does not display SEAT BELT: CLOSED, replace driver's seat belt switch.
4. Turn ignition off. Disconnect Body Control Module (BCM) Blue 16-pin connector C4. BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1) Using external ohmmeter, measure resistance between ground and terminal No. 15 (Light Green/Red wire) on BCM Blue harness connector. If resistance is less than 5 ohms, repair Light Green/Red wire for short to ground. If resistance is 5 ohms or greater, replace BCM.

CHIME INOPERATIVE WITH KEY IN IGNITION

Note. Perform CHIME TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-2A after each repair.

1. Turn ignition on. Open driver's door. Using scan tool, read left front door ajar status. If scan tool does not display LF DOOR AJAR: CLOSED, go to «DOOR AJAR TEST 1A»(ref-679-S14844634192000031300000). If scan tool displays LF DOOR AJAR: CLOSED, go to next step.
2. Using scan tool, read key-in ignition status. If scan tool displays KEY-IN IGN: CLOSED, replace Body Control Module (BCM). BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1) If scan tool does not display KEY-IN IGN: CLOSE, go to next step.
3. Disconnect ignition switch connector. (Scheme 2) Using external ohmmeter, measure resistance between ground and terminal No. 3 (Black/Light Green wire) on ignition switch harness connector. If resistance is more than 5 ohms, repair open Black/Light Green wire. If resistance is 5 ohms or less, go to next step.
4. Connect jumper wire between terminals No. 2 (Light Blue wire) and No. 3 (Black/Light Green wire) on ignition switch connector. Using scan tool, read KEY-IN ignition status. If scan tool displays KEY-IN IGN: CLOSED, replace ignition switch. If scan tool does not display KEY-IN IGN: CLOSED, go to next step.
5. Access BCM connectors. Do not disconnect connectors. Backprobe jumper wire between terminal No. 24 (Light Blue wire) on BCM Black 24-pin connector C2 and ground. Using scan tool, read KEY-IN ignition status. If scan tool displays KEY-IN IGN: CLOSED, repair open Light Blue wire. If scan tool does not display KEY-IN IGN: CLOSED, replace BCM.

Scheme 2

INOPERATIVE CHIME BEEP REQUEST

Note. Perform CHIME TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-2A after each repair.

1. Ensure vehicle is equipped with Overhead Travel Information System (OTIS) or Automatic Temperature Control (ATC). Turn ignition on. Using scan tool, check ID of Body Control Module (BCM). If communication with BCM is not possible, see appropriate VEHICLE COMMUNICATIONS article. If BCM communication is possible, go to next step.
2. Using scan tool, check ID of ATC and OTIS units. If communication with ATC and OTIS units is not possible, see appropriate VEHICLE COMMUNICATIONS article. If ATC and OTIS units communication is possible, go to next step.
3. Using scan tool, actuate chime test. If chime sounds, go to next step. If chime does not sound, replace BCM. BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1)
4. Press any button on ATC or OTIS. If chime does not sound, replace ATC unit or OTIS unit (as applicable). If chime does sound, system is currently functioning correctly.

IDENTIFYING DOOR AJAR PROBLEMS

Note. Perform SYMPTOM ID TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-2A after each repair.

1. Ensure all doors are closed and properly aligned. Using scan tool, enter BODY SYSTEM, then BODY COMPUTER. Select INPUTS/OUTPUTS. Observe door and decklid ajar switch status. Individually open and close all doors and decklid. Scan tool should display status opposite of actual door position.
2. If scan tool displays ajar switch status CLOSED when door is closed, perform appropriate SHORTED test. See «DOOR AJAR SYMPTOM DIRECTORY»(ref-679-S01374450712000031300000) table. If scan tool displays ajar switch status OPEN when door is open, perform appropriate OPEN test. See «DOOR AJAR SYMPTOM DIRECTORY»(ref-679-S01374450712000031300000) table.

DOOR AJAR SYMPTOM DIRECTORY

OPEN DRIVER'S DOOR AJAR CIRCUIT

Note. Perform DOOR AJAR TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-2A after each repair.

1. Disconnect driver's door ajar switch connector. Using external ohmmeter, measure resistance between ground and terminal No. 2 (Black wire) on harness connector. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or greater, repair open Black wire.
2. Connect jumper wire between terminals No. 1 (Tan wire) and No. 2 (Black wire) on driver's door ajar switch harness connector. Using scan tool, read left front door ajar switch status. If scan tool displays LF DOOR AJAR SWITCH: CLOSED, replace driver's door latch assembly. If scan tool does not display LF DOOR AJAR SWITCH: CLOSED, go to next step.
3. Do not disconnect jumper wire. Disconnect Body Control Module (BCM) Blue 16-pin connector C4. BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1) Using external ohmmeter, measure resistance between ground and terminal No. 4 (Tan wire) on BCM Blue connector. If resistance is less than 5 ohms, replace BCM. If resistance is 5 ohms or greater, repair open Tan wire.

SHORTED LEFT REAR DOOR AJAR CIRCUIT

Note. Perform DOOR AJAR TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-2A after each repair.

1. Disconnect driver's door ajar switch connector. Using scan tool, read left front door ajar switch status. If scan tool displays LF DOOR AJAR SWITCH: CLOSED, go to next step. If scan tool does not display LF DOOR AJAR SWITCH: CLOSED, replace driver's door latch assembly.
2. Disconnect Body Control Module (BCM) Blue 16-pin connector C4. BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1)

OPEN LEFT REAR DOOR AJAR CIRCUIT

Note. Perform DOOR AJAR TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-2A after each repair.

1. Disconnect left rear door ajar switch connector. Using external ohmmeter, measure resistance between ground and terminal No. 2 (Black wire) on harness connector. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or greater, repair open Black wire.
2. Connect jumper wire between terminals No. 1 (Tan/Red wire) and No. 2 (Black wire) on left rear door ajar switch harness connector. Using scan tool, read left rear door ajar switch status. If scan tool displays LR DOOR AJAR SWITCH: CLOSED, replace left rear door latch assembly. If scan tool does not display LR DOOR AJAR SWITCH: CLOSED, go to next step.
3. Do not disconnect jumper wire. Disconnect Body Control Module (BCM) Blue 16-pin connector C4. BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1) Using external ohmmeter, measure resistance between ground and terminal No. 1 (Tan/Red wire) on BCM Blue connector. If resistance is less than 5 ohms, replace BCM. If resistance is 5 ohms or greater, repair open Tan/Red wire.

SHORTED DOOR AJAR CIRCUIT

Note. Perform DOOR AJAR TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-2A after each repair.

1. Disconnect Body Control Module (BCM) Blue 16-pin connector C4. BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1) Ensure all doors are closed. Using external ohmmeter, measure resistance between ground and terminal No. 2 (Tan/Red wire) on BCM Blue connector. If resistance is less than 5 ohms, go to «DOOR AJAR TEST 5B»(ref-679-S22943997522000031300000). If resistance is 5 ohms of greater, go to next step.
2. Measure resistance between ground and terminal No. 10 (Tan/Red wire) on BCM Blue connector. If resistance is less than 5 ohms, go to «DOOR AJAR TEST 5C»(ref-679-S42355768252000031300000). If resistance is 5 ohms or greater, go to next step.
3. Measure resistance between ground and terminal No. 1 (Tan/Red wire) on BCM Blue connector. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or greater, replace BCM.
4. Disconnect left rear door ajar switch connector. Using external ohmmeter, measure resistance between ground and terminal No. 1 (Tan/Red wire) on harness connector. If resistance is less than 5 ohms, repair Tan/Red wire for short to ground. If resistance is 5 ohms or greater, replace left rear door latch assembly.

SHORTED RIGHT FRONT DOOR AJAR CIRCUIT

Note. Perform DOOR AJAR TEST 5A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-2A after each repair.

Disconnect right front door ajar switch connector. Using external ohmmeter, measure resistance between ground and terminal No. 1 (Tan/Red wire) on harness connector. If resistance is less than 5 ohms, repair Tan/Red wire for short to ground. If resistance is 5 ohms or greater, replace right front door latch assembly.

SHORTED RIGHT REAR DOOR AJAR CIRCUIT

Note. Perform DOOR AJAR TEST 5A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-2A after each repair.

Disconnect right rear door ajar switch connector. Using external ohmmeter, measure resistance between ground and terminal No. 1 (Tan/Red wire) on harness connector. If resistance is less than 5 ohms, repair Tan/Red wire for short to ground. If resistance is 5 ohms or greater, replace right rear door latch assembly.

OPEN RIGHT FRONT DOOR AJAR CIRCUIT

Note. Perform DOOR AJAR TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-2A after each repair.

1. Disconnect right front door ajar switch connector. Using external ohmmeter, measure resistance between ground and terminal No. 2 (Black wire) on harness connector. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or greater, repair open Black wire.
2. Connect jumper wire between terminals No. 1 (Tan/Red wire) and No. 2 (Black wire) on right front door ajar switch harness connector. Using scan tool, read right front door ajar switch status. If scan tool displays RF DOOR AJAR SWITCH: CLOSED, replace right front door latch assembly. If scan tool does not display RF DOOR AJAR SWITCH: CLOSED, go to next step.
3. Do not disconnect jumper wire. Disconnect Body Control Module (BCM) Blue 16-pin connector C4. BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1) Using external ohmmeter, measure resistance between ground and terminal No. 2 (Tan/Red wire) on BCM Blue connector. If resistance is less than 5 ohms, replace BCM. If resistance is 5 ohms or greater, repair open Tan/Red wire.

OPEN RIGHT REAR DOOR AJAR CIRCUIT

Note. Perform DOOR AJAR TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-2A after each repair.

1. Disconnect right rear door ajar switch connector. Using external ohmmeter, measure resistance between ground and terminal No. 2 (Black wire) on harness connector. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or greater, repair open Black wire.
2. Connect jumper wire between terminals No. 1 (Tan/Red wire) and No. 2 (Black wire) on right rear door ajar switch harness connector. Using scan tool, read right rear door ajar switch status. If scan tool displays RR DOOR AJAR SWITCH: CLOSED, replace right rear door latch assembly. If scan tool does not display RR DOOR AJAR SWITCH: CLOSED, go to next step.
3. Do not disconnect jumper wire. Disconnect Body Control Module (BCM) Blue 16-pin connector C4. BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1) Using external ohmmeter, measure resistance between ground and terminal No. 10 (Tan/Red wire) on BCM Blue connector. If resistance is less than 5 ohms, replace BCM. If resistance is 5 ohms or greater, repair open Tan/Red wire.

IDENTIFYING EXTERIOR LIGHTING SYSTEM PROBLEMS

Note. Perform SYMPTOM ID TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-2A after each repair.

Using scan tool, select READ DTCs. If scan tool displays HEADLAMP SWITCH INPUT FAILURE, go to EXTERIOR LIGHT TEST 2A . If scan tool does not display HEADLAMP SWITCH INPUT FAILURE, go to EXTERIOR LIGHT SYSTEM DIAGNOSTIC TEST DIRECTORY .

EXTERIOR LIGHT SYSTEM DIAGNOSTIC TEST DIRECTORY

HEADLIGHT SWITCH INPUT FAILURE

Note. Perform EXTERIOR LIGHT TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-2A after each repair.

1. Ensure headlight switch is in OFF position. Using scan tool, select SENSORS. Read headlight switch voltage. If scan tool displays HEADLIGHT SWITCH VOLTAGE: 5 volts, go to next step. If scan tool does not display HEADLIGHT SWITCH VOLTAGE: 5 volts, go to «EXTERIOR LIGHT TEST 2B»(ref-679-S05995189282000031300000).
2. Disconnect headlight switch 13-pin connector. Connect jumper wire between terminals No. 6 (White wire) and No. 12 (Yellow wire) on headlight switch harness connector. Read headlight switch voltage. If scan tool displays HEADLIGHT SWITCH VOLTAGE: 0.0 volts, replace headlight switch. If scan tool does not display HEADLIGHT SWITCH VOLTAGE: 0.0 volts, go to next step.
3. Remove jumper wire. Connect jumper wire between ground and terminal No. 12 (Yellow wire) on headlight switch 13-pin harness connector. Read headlight switch voltage. If scan tool displays HEADLIGHT SWITCH VOLTAGE: 0.0 volts, go to step 5. If scan tool does not display HEADLIGHT SWITCH VOLTAGE: 0.0 volts, go to next step.
4. Disconnect Body Control Module (BCM) Black 24-pin connector C2. BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1)
5. Disconnect Body Control Module (BCM) Black 24-pin connector C2. BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1)
6. Remove BCM from junction block. Inspect internal 20-pin connector. Repair as needed. If connector is okay, replace BCM.

Note. Perform EXTERIOR LIGHT TEST 2A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-2A after each repair.

1. Disconnect headlight switch 13-pin connector. Read headlight switch voltage. If scan tool displays HEADLIGHT SWITCH VOLTAGE: 5 volts, replace headlight switch. If scan tool does not display HEADLIGHT SWITCH VOLTAGE: 5 volts, go to next step.
2. Disconnect Body Control Module (BCM) Black 24-pin connector C2. BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1)

LOW BEAM HEADLIGHTS WILL NOT TURN ON

Note. Perform EXTERIOR LIGHT TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-2A after each repair.

1. Turn on low beam headlights. If both headlights are not illuminated, go to «EXTERIOR LIGHT TEST 3B»(ref-679-S33247826732000031300000). If one low beam headlight is not illuminated, go to next step.
2. Remove and inspect fuses No. 10 (right low beam headlight) and No. 12 (left low beam headlight) from junction block. (Scheme 3) Junction block is located behind left end cap of instrument panel. (Scheme 1) If fuse is open, go to step 5. If fuse is okay, install fuse and go to next step.
3. Disconnect inoperative headlight connector. Using external voltmeter, measure voltage between ground and terminal "A" (Violet or Violet/Red wire) on headlight harness connector. If voltage is 10 volts or less, repair open Violet or Violet/Red wire. If voltage is greater than 10 volts, go to next step.
4. Turn off headlights. Using external ohmmeter, measure resistance between ground and terminal "B" (Black wire) on headlight harness connector. If resistance is less than 5 ohms, replace headlight. If resistance is 5 ohms or greater, repair open Black wire.
5. Replace fuse. If headlight illuminates without blowing fuse, repair is complete. If fuse blows, go to next step.
6. Disconnect inoperative headlight connector. Using external ohmmeter, measure resistance between ground and terminal "A" (Violet or Violet/Red wire) on headlight harness connector. If resistance is less than 5 ohms, repair Violet or Violet/Red wire for short to ground. If resistance is 5 ohms or greater, replace headlight bulb.

Scheme 3

Scheme 4

Note. Perform EXTERIOR LIGHT TEST 3A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-2A after each repair.

1. Turn headlights on. Ensure fog lights are off. Using scan tool, read headlight switch voltage. If scan tool does not display HEADLIGHT SWITCH VOLTAGE: 1.6 volts (approximately), replace headlight switch. If scan tool displays HEADLIGHT SWITCH VOLTAGE: 1.6 volts (approximately), go to next step.
2. Using scan tool, actuate headlight relay. If relay can be heard clicking during actuation, go to next step. If relay cannot be heard during actuation, go to «EXTERIOR LIGHT TEST 3C»(ref-679-S19572703512000031300000).
3. Remove low beam relay from junction block. (Scheme 3) Using external voltmeter, measure voltage between ground and terminal "D" (fused B+ circuit) on relay socket. If voltage is 10 volts or less, repair open fused B+ circuit. If voltage is greater than 10 volts, go to next step.
4. Connect jumper wire between terminals "B" (low beam relay output circuit) and "D" on low beam relay socket. If headlights illuminate, replace low beam relay. If headlights do not illuminate, repair open low beam relay output circuit.

Note. Perform EXTERIOR LIGHT TEST 3A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-2A after each repair.

1. Stop headlight actuation. Remove low beam relay from junction block. (Scheme 3) Using external voltmeter, measure voltage between ground and terminal "C" (fused B+ circuit) on relay socket. If voltage is 10 volts or less, repair open fused B+ circuit. If voltage is greater than 10 volts, go to next step.
2. Connect test light between terminals "A" (low beam relay control) and "C". Using scan tool, actuate low beam headlight relay. If test light flashes, replace low beam headlight relay. If test light does not flash, go to next step.
3. Remove Body Control Module (BCM) from junction block. BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1)

LOW BEAM HEADLIGHTS WILL NOT TURN OFF

Note. Perform EXTERIOR LIGHT TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-2A after each repair.

1. Ensure headlight switch is in OFF position. Using scan tool, select SENSORS. Read headlight switch voltage. If scan tool does not display HEADLIGHT SWITCH VOLTAGE: 4.5 volts (approximately), replace headlight switch. If scan tool displays HEADLIGHT SWITCH VOLTAGE: 4.5 volts (approximately), go to next step.
2. Remove low beam relay from junction block. (Scheme 3) If low beam headlights are not illuminated, go to next step. If low beam headlights are illuminated, repair low beam relay output circuit for short to voltage.
3. Monitoring relay for clicking sound, install low beam relay in junction block. If clicking sound exists, replace Body Control Module (BCM). BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1)

PARKING LIGHTS WILL NOT TURN ON

Note. Perform EXTERIOR LIGHT TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-2A after each repair.

1. Ensure headlight switch is in PARK position. Using scan tool, select SENSORS. Read headlight switch voltage. If scan tool does not display HEADLIGHT SWITCH VOLTAGE:.45 volts (approximately), replace headlight switch. If scan tool displays HEADLIGHT SWITCH VOLTAGE:.45 volts (approximately), go to next step.
2. Using scan tool, actuate parking light relay. If relay can be heard clicking during actuation, go to next step. If relay cannot be heard during actuation, go to step 5.
3. Remove parking light relay from junction block. (Scheme 3) Using external voltmeter, measure voltage between ground and terminal "D" (fused B+ circuit) on relay socket. If voltage is 10 volts or less, repair open fused B+ circuit. If voltage is greater than 10 volts, go to next step.
4. Connect jumper wire between terminals "B" (parking light relay output circuit) and "D" on parking light relay socket. If parking lights illuminate, replace relay. If parking lights do not illuminate, repair open parking light relay output circuit.
5. Stop parking light actuation. Remove parking light relay from junction block. Using external voltmeter, measure voltage between ground and terminal "C" (fused B+ circuit) on relay socket. If voltage is 10 volts or less, go to step 8. If voltage is greater than 10 volts, go to next step.
6. Connect test light between terminals "A" (parking light relay control) and "C". Using scan tool, actuate parking light relay. If test light flashes, replace parking light relay. If test light does not flash, go to next step.
7. Remove Body Control Module (BCM) from junction block. BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1)
8. Remove fuse No. 7 from junction block. If fuse No. 7 is open, go to next step. If fuse No. 7 is not open, repair open fused B+ circuit (Pink/White wire) from Power Distribution Center (PDC) to junction block.
9. Using external ohmmeter, measure resistance between ground and terminal "B" on parking light relay socket. If resistance is less than 5 ohms, repair parking light relay output short circuit between terminal No. 11 on junction block connector C10 and parking lights. Replace fuse No. 7. If resistance is 5 ohms or greater, replace fuse No. 7.

PARKING LIGHTS WILL NOT TURN OFF

Note. Perform EXTERIOR LIGHT TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-2A after each repair.

1. Ensure headlight switch is in OFF position. Using scan tool, select SENSORS. Read headlight switch voltage. If scan tool does not display HEADLIGHT SWITCH VOLTAGE: 4.5 volts (approximately), replace headlight switch. If scan tool displays HEADLIGHT SWITCH VOLTAGE: 4.5 volts (approximately), go to next step.
2. Remove parking light relay from junction block. (Scheme 3) If parking lights are not illuminated, go to next step. If parking lights are illuminated, repair parking light relay output circuit for short to voltage.
3. Monitoring relay for clicking sound, install parking light relay in junction block. If clicking sound exists, replace Body Control Module (BCM). BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1) If clicking sound does not exist, replace relay.

HIGH BEAM HEADLIGHTS WILL NOT TURN ON

Note. Perform EXTERIOR LIGHT TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-2A after each repair.

1. Access high beam headlight relay in junction block. Junction block is located behind left end cap of instrument panel. (Scheme 1)
2. Remove high beam relay from junction block. (Scheme 3) Using external voltmeter, measure voltage between ground and terminal "D" (fused B+ circuit) on relay socket. If voltage is 10 volts or less, repair open fused B+ circuit. If voltage is greater than 10 volts, go to next step.
3. Connect jumper wire between terminals "B" (high beam relay output circuit) and "D" on high beam relay socket. If high beam headlights illuminate, replace relay. If high beam headlights do not illuminate, repair high beam relay output circuit.
4. Remove fuse No. 11 from junction block. If fuse is open, go to step 9. If fuse is okay, go to next step.
5. Connect test light between terminals "A" and "C" (high beam relay control). Cycle headlight switch on and off. If test light flashes, replace high beam relay. If test light does not flash, go to next step.
6. Connect test between ground and terminal "C" on high beam relay socket. Cycle headlight switch on and off. If test light flashes, repair high beam relay ground circuit. If test light does not flash, go to next step.
7. Disconnect multifunction switch 7-pin connector. (Scheme 2) Ensure headlight are on. Using external voltmeter, measure voltage between ground and terminal No. 4 (Brown/White wire) on multifunction switch harness connector. If voltage is 10 volts or less, repair open Brown/White wire. If voltage is more than 10 volts, go to next step.
8. Install high beam relay in junction block. Connect jumper wire between terminals No. 5 (Pink/Red wire) and 7 (White/Light Green wire) on multifunction switch 7-pin connector. If headlights illuminate, replace multifunction switch. If headlights do not illuminate, repair open White/Light Green wire.
9. Using external ohmmeter, measure resistance between ground and fused low beam relay output terminal (terminal closest to fuse No. 5) on fuse No. 11 socket. (Scheme 3) Cycle high beam headlight switch on and off while monitoring ohmmeter. If resistance drops below 10 ohms, repair fused low beam relay output circuit or high beam relay control circuit for short to ground. If resistance does not drop below 10 ohms, replace fuse No. 11. Repair is complete.

HIGH BEAM HEADLIGHTS WILL NOT TURN OFF

Note. Perform EXTERIOR LIGHT TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-2A after each repair.

1. Remove high beam relay from junction block. Junction block is located behind left end cap of instrument panel. (Scheme 1)
2. Using external voltmeter, measure voltage between ground and terminal "C" on high beam relay socket. (Scheme 3) If voltage is one volt or less, replace high beam relay. If voltage is more than one volt, go to next step.
3. Disconnect multifunction switch 7-pin connector. (Scheme 2) Measure voltage between ground and terminal No. 7 (White/Light Green wire) on multifunction switch harness connector. If voltage is one volt or less, replace multifunction switch. If voltage is more than one volt, repair White/Light Green wire for short to voltage.

FOG LIGHTS WILL NOT TURN ON

Note. Perform EXTERIOR LIGHT TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-2A after each repair.

1. Turn fog light on with headlights on. Using scan tool, select SENSORS. Read headlight switch voltage. If scan tool does not display HEADLIGHT SWITCH VOLTAGE: 3.0 volts (approximately), replace headlight switch. If scan tool displays HEADLIGHT SWITCH VOLTAGE: 3.0 volts (approximately), go to next step.
2. Using scan tool, actuate fog light relay. If relay can be heard clicking during actuation, go to next step. If relay cannot be heard during actuation, go to step 5.
3. Remove fog light relay from junction block. (Scheme 3) Using external voltmeter, measure voltage between ground and terminal "D" (fused B+ circuit) on relay socket. If voltage is 10 volts or less, replace junction block. If voltage is greater than 10 volts, go to next step.
4. Connect jumper wire between terminals "B" (low beam relay output circuit) and "D" on fog light relay socket. If fog lights illuminate, replace relay. If fog lights do not illuminate, repair open fog light relay output circuit.
5. Stop fog light actuation. Turn on headlights and attempt to turn on high beam headlights. If high beam headlights operate, go to next step. If high beam headlights do not operate, repair open fused B+ circuit from Power Distribution Center fuse "C".
6. Inspect junction block fuse No. 16. If fuse is open, go to step 10. If fuse is okay, go to next step.
7. Remove fog light relay from junction block. Using external voltmeter, measure voltage between ground and terminal "C" (fused B+ circuit) on relay socket. If voltage is 10 volts or less, repair open fused B+ circuit. If voltage is more than 10 volts, go to next step.
8. Connect test light between terminals "A" and "C" on fog light relay socket. Using scan tool, actuate fog light relay. If test light flashes, replace relay. If test light does not flash, go to next step.
9. Remove Body Control Module (BCM) from junction block. BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1)
10. Remove fog light relay. Using external ohmmeter, measure resistance between ground and terminal "B" on relay socket. If resistance is less than 10 ohms, repair shorted fused B+ circuit. Replace fuse No. 16. If resistance is 10 ohms or greater, replace fuse No. 16.

FOG LIGHTS WILL NOT TURN OFF

Note. Perform EXTERIOR LIGHT TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-2A after each repair.

1. Ensure headlight switch is in OFF position. Using scan tool, select SENSORS. Read headlight switch voltage. If scan tool displays HEADLAMP SWITCH VOLTAGE: 4.5 VOLTS, go to next step. If scan tool does not display HEADLAMP SWITCH VOLTAGE: 4.5 VOLTS, replace headlight switch.
2. Remove fog light relay from junction block. (Scheme 3) Junction block is located behind left end cap of instrument panel. (Scheme 1) If fog lights are not illuminated, repair fog light relay output circuit for short to voltage. If fog lights are illuminated, go to next step.
3. Monitoring relay for clicking sound, install fog light relay in junction block. If clicking sound exists, replace Body Control Module (BCM). BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1)

HEADLIGHT TIME DELAY

Note. Perform EXTERIOR LIGHT TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-2A after each repair.

If headlights do not operate correctly, go to EXTERIOR LIGHT TEST 1A. If headlights do operate correctly, turn ignition on. Using scan tool, select SENSORS. Read IGNITION VOLTAGE. If scan tool displays battery voltage, replace Body Control Module (BCM). BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1)

AUTO HEADLIGHTS AND/OR FOG LIGHTS NOT OPERATING PROPERLY

Note. Perform EXTERIOR LIGHT TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-2A after each repair.

1. Ensure headlight switch is in auto headlight IN position. Using scan tool, select BODY COMPUTER, then SENSORS. Read HEADLAMP SWITCH VOLTAGE. If voltage is about 2.3 volts, go to next step. If voltage is not about 2.3 volts, replace headlight switch.
2. Pull headlight switch knob out to fog light auto mode. Read HEADLAMP SWITCH VOLTAGE. If voltage is about 3.7 volts, go to next step. If voltage is not about 3.7 volts, replace
3. Shine light on sun sensor. Using scan tool, read AUTO HEADLAMP SENSOR volts. If AUTO HEADLAMP SENSOR voltage is about zero volts, go to next step. If AUTO HEADLAMP SENSOR voltage is not about zero volts, go to step 5.
4. Cover up sun sensor. Read AUTO HEADLAMP SENSOR volts. If AUTO HEADLAMP SENSOR voltage is about 5 volts, replace Body Control Module (BCM). BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1) If AUTO HEADLAMP SENSOR voltage is not about 5 volts, go to step 5.
5. Disconnect sun sensor 4-pin connector. Read AUTO HEADLAMP SENSOR volts. If AUTO HEADLAMP SENSOR voltage is about 5 volts, go to next step. If AUTO HEADLAMP SENSOR voltage is not about 5 volts, go to step 8.
6. Connect jumper wire between terminals No. 3 and 4 on sun sensor harness connector. Read AUTO HEADLAMP SENSOR volts. If AUTO HEADLAMP SENSOR voltage is about zero volts, replace sun sensor. If AUTO HEADLAMP SENSOR voltage is not about zero volts, remove jumper wire and go to next step.
7. Connect jumper wire between ground and terminal No. 4 on sun sensor harness connector. Read AUTO HEADLAMP SENSOR volts. If AUTO HEADLAMP SENSOR voltage is about zero volts, repair open ground circuit. If AUTO HEADLAMP SENSOR voltage is not about zero volts, repair open sun sensor signal circuit.
8. Disconnect Body Control Module (BCM) 24-pin Black connector C2. BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1) Using ohmmeter, measure resistance between ground and terminal No. 4 (Dark Blue wire) on sun sensor harness connector. If resistance is 5 ohms or greater, replace Body Control Module (BCM). BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1) If resistance is less than 5 ohms, repair Dark Blue wire for short to ground.

IDENTIFYING INSTRUMENT CLUSTER SYSTEM PROBLEMS

Note. Perform SYMPTOM ID TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-2A after each repair.

1. Ensure scan tool can communicate with Body Control Module (BCM). If BCM communication is not possible, see appropriate VEHICLE COMMUNICATIONS article. Using scan tool, select BODY SYSTEM, BODY COMPUTER, then SENSORS. Read IGNITION VOLTAGE. If scan tool displays battery voltage, go to next step. If scan tool does not display battery voltage, go to TEST 16A in appropriate VEHICLE COMMUNICATIONS article.
2. Turn ignition on. Using scan tool, select ELECTRO/MECHANICAL cluster. If scan tool displays NO RESPONSE, go to TEST 6A in appropriate VEHICLE COMMUNICATIONS article. If scan tool does not display NO RESPONSE, go to next step.
3. Using scan tool, select MONITOR, then PCI BUS ENGINE INFO. If scan tool displays NO RESPONSE, go to TEST 9A in appropriate VEHICLE COMMUNICATIONS article. If scan tool does not display NO RESPONSE, go to next step.
4. Using scan tool, select INSTRUMENT CLUSTER. Read DTCs (fault messages). See «INSTRUMENT CLUSTER FAULT MESSAGE DIRECTORY»(ref-679-S10899829632000031300000) table. If none of the following messages are displayed, go to next step. INSTRUMENT CLUSTER FAULT MESSAGE DIRECTORY Message Displayed (1) Go To Test EATX BUS COMM FAILURE 10A SBEC BUS COMM FAILURE 8A AIR BAG BUS COMM FAILURE 2A ABS BUS COMM FAILURE 11A BCM BUS COMM FAILURE 4A (1) See test listed in appropriate VEHICLE COMMUNICATIONS article.
5. Using scan tool, select BODY CONTROL MODULE, then READ DTCs. If scan tool displays FUEL LEVEL SENDING UNIT FAILURE, go to «INSTRUMENT CLUSTER TEST 2A»(ref-679-S20521166412000031300000) . If scan tool does not display FUEL LEVEL SENDING UNIT FAILURE, go to next step.
6. If scan tool displays DIMMING LEVEL SWITCH FAILURE, go to «INSTRUMENT CLUSTER TEST 3A»(ref-679-S24613631272000031300000) . If scan tool does not display DIMMING LEVEL SWITCH FAILURE, go to next step.
7. Identify problem(s) listed in «INSTRUMENT CLUSTER DIAGNOSTIC TEST DIRECTORY»(ref-679-S20109234682000031300000) table and perform indicated test(s).
8. If speedometer, tachometer or temperature gauges intermittently go to zero or to lowest point, select MONITOR, then ENGINE INFO using scan tool. While wiggling wiring harness and connectors, monitor scan tool. If scan tool displays NO RESPONSE, disconnect appropriate connectors and inspect terminals for corrosion or loose pushed out terminals. Repair as needed.

INSTRUMENT CLUSTER DIAGNOSTIC TEST DIRECTORY

FUEL LEVEL SENDING UNIT FAILURE

Note. Perform INSTRUMENT CLUSTER TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-2A after each repair.

1. Disconnect Body Control Module (BCM) 16-pin Blue connector C4. BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1)
2. Remove rear seat and disconnect left body harness connector. Using external voltmeter, measure voltage between ground and terminal No. 2 (Dark Blue wire) on body harness connector. If voltage is 5 volts or less, replace fuel sending unit. If voltage is more than 5 volts, repair Dark Blue wire for short to voltage.

DIMMING LEVEL SWITCH FAILURE

Note. Perform INSTRUMENT CLUSTER TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-2A after each repair.

1. Access Body Control Module (BCM) Black 24-pin connector C2. BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1)
2. Disconnect BCM Black 24-pin connector. Using external voltmeter, measure voltage between ground and terminal No. 19 (White wire) on BCM Black connector. If voltage is 5 volts or less, go to next step. If voltage is more than 5 volts, repair White wire for short to voltage.
3. Using external ohmmeter, measure resistance between ground and terminal No. 19 (White wire) on BCM Black connector. If resistance is less than 5 ohms, repair White wire for short to ground. If resistance is 5 ohms or greater, go to next step.
4. Using external voltmeter, measure voltage between ground and terminal No. 21 (Red wire) on BCM Black connector. If voltage is 5 volts or less, go to next step. If voltage is more than 5 volts, repair Red wire for short to battery voltage.
5. Using external ohmmeter, measure resistance between ground and terminal No. 21 (Red wire) on BCM Black connector. If resistance is less than 5 ohms, repair Red wire for short to ground. If resistance is 5 ohms or greater, go to next step.
6. Disconnect headlight switch connector. Using external ohmmeter, measure resistance between terminals No. 19 and 21 on BCM Black connector. If resistance is less than 5 ohms, repair short between White wire and Red wire. If resistance is 5 ohms or greater, go to next step.
7. Using external ohmmeter, measure resistance of White wire between terminal No. 19 on BCM Black connector and terminal No. 6 on headlight switch harness connector. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or greater, repair open White wire.
8. Using external ohmmeter, measure resistance of Red wire between terminal No. 21 on BCM Black connector and terminal No. 3 on headlight switch harness connector. If resistance is less than 5 ohms, replace headlight switch. If resistance is 5 ohms or greater, repair open Red wire.

ALL GAUGES NOT OPERATING CORRECTLY

Note. Perform INSTRUMENT CLUSTER TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-2A after each repair.

1. Turn ignition off. Remove and inspect fuse No. 1 from junction block. Junction block is located behind left end cap of instrument panel. (Scheme 1)
2. Install fuse in junction block. Turn ignition on. Using external voltmeter, measure voltage between ground and fuse No. 1. If voltage is 10 volts or less, go to step 6. If voltage is more than 10 volts, go to next step.
3. Disconnect instrument cluster Green 10-pin connector C1. Using external voltmeter, measure voltage between ground and terminal No. 2 (Red/White wire) on instrument cluster Green harness connector. If voltage is 10 volts or less, repair open Red/White wire. If voltage is more than 10 volts, go to next step.
4. Connect jumper wire between ground and terminal No. 5 (Yellow/Violet wire) on instrument cluster Green harness connector. Using scan tool, perform PCI BUS test. If scan tool displays BUS SHORTED TO GROUND, go to next step. If scan tool does not display BUS SHORTED TO GROUND, repair open Yellow/Violet wire.
5. Close all doors. Remove key from ignition switch and wait 30 seconds. Using external ohmmeter, measure resistance between ground and terminal No. 6 (Black/Green wire) on instrument cluster Green harness connector. If resistance is less than 5 ohms, replace instrument cluster. If resistance is 5 ohms or greater, repair open Black/Green wire.
6. Disconnect ignition switch connector. (Scheme 2) Using external voltmeter, measure voltage between ground and terminal No. 5 (Red wire) on ignition switch harness connector. If voltage is 10 volts or less, repair open Red wire. If voltage is more than 10 volts, go to next step.
7. Using external ohmmeter, measure resistance between fuse No. 1 and terminal No. 1 (Dark Green/Red wire) on ignition switch harness connector. If resistance is less than 5 ohms, replace ignition switch. If resistance is 5 ohms or greater, repair open Dark Green/Red wire.

Note. Perform INSTRUMENT CLUSTER TEST 4A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-2A after each repair.

1. Using external ohmmeter, measure resistance between ground and fuse No. 1 lower terminal (terminal closest to fuse No. 7). If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or greater, replace fuse No. 1.
2. Disconnect instrument clutch connectors. Using external ohmmeter, measure resistance between ground and fuse No. 1 lower terminal (terminal closest to fuse No. 7). (Scheme 3) If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or greater, replace instrument cluster and fuse No. 1.
3. Disconnect Transmission Control Module (TCM). (Scheme 4) Using external ohmmeter, measure resistance between ground and fuse No. 1 lower terminal (terminal closest to fuse No. 7). If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or greater, replace TCM and fuse No. 1.
4. Disconnect Body Control Module (BCM) harness connectors. BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 5)

Scheme 5

IDENTIFYING INOPERATIVE GAUGE

Note. Perform INSTRUMENT CLUSTER TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-2A after each repair.

1. Turn ignition off. While holding TRIP reset button on instrument cluster, turn ignition to ON position. This will start Mechanical Instrument Cluster (MIC) self-test. This test actuates gauges through their full range. If each gauge passed the self-test, go to next step. If one or more gauges did not pass self-test, go to «INSTRUMENT CLUSTER TEST 10A»(ref-679-S11431721602000031300000) .
2. Cycle ignition switch to stop self-test. Go to appropriate test for malfunctioning gauge. See «GAUGE TEST DIRECTORY»(ref-679-S08152296172000031300000) table. If tachometer is only gauge malfunctioning, go to next step.
3. Start engine. Using scan tool, read engine RPM. If scan tool displays engine speed above 400 RPM, replace instrument cluster. If scan tool does not display engine speed above 400 RPM, go to TEST 8A in appropriate VEHICLE COMMUNICATIONS article.

GAUGE TEST DIRECTORY

ODOMETER MALFUNCTIONING

Note. Perform INSTRUMENT CLUSTER TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-2A after each repair.

1. Turn ignition to OFF position. While monitoring odometer, turn ignition to RUN position. If all segments illuminate, go to next step. If all segments do not illuminate, replace instrument cluster.
2. Using scan tool, select ELECTRO/MECHANICAL INSTRUMENT CLUSTER. If scan tool displays NO RESPONSE, go to TEST 6A in appropriate VEHICLE COMMUNICATIONS article. If scan tool does not display NO RESPONSE, go to next step.
3. Using scan tool, read instrument cluster DTCs. If scan tool displays EATX BUS COMMUNICATION FAILURE, go to TEST 10A in appropriate VEHICLE COMMUNICATIONS article. If scan tool does not display EATX BUS COMMUNICATION FAILURE, odometer is currently functioning correctly.

IDENTIFYING WARNING LIGHT MALFUNCTION

Note. Perform INSTRUMENT CLUSTER TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-2A after each repair.

Turn ignition to OFF position, then to RUN position. Observe all warning lights on instrument cluster. During self-test, brake warning light, oil warning light, high beam, trunk ajar and turn signal indicators can not be actuated. See WARNING LIGHT TEST DIRECTORY table. If charging, cruise control or MIL (Check Engine) warning lights are malfunctioning, go to appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE.

WARNING LIGHT TEST DIRECTORY

INSTRUMENT CLUSTER PRINTED CIRCUIT BOARD WARNING LIGHT MALFUNCTION

Note. Perform INSTRUMENT CLUSTER TEST 7A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-2A after each repair.

Turn ignition off. Disconnect instrument cluster connectors. If malfunctioning light is CRUISE CONTROL or TRACTION CONTROL ACTIVE, replace instrument cluster. If malfunctioning light is not CRUISE CONTROL or TRACTION CONTROL ACTIVE, remove and inspect malfunctioning light. Replace as needed. If light is okay, replace instrument cluster.

PRND3L LIGHT MALFUNCTIONING

Note. Perform INSTRUMENT CLUSTER TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-2A after each repair.

1. While monitoring PRND3L indicator light, cycle ignition switch from OFF to RUN. If all indicator lights illuminate, go to next step. If all indicator lights do not illuminate, replace and recalibrate instrument cluster circuit board.
2. Engage parking brake. Using scan tool, select Transmission Control Module (TCM). Select MONITORS in status displays. Monitor SLP status of shift lever position. While monitoring scan tool, move shift lever through all positions. If scan tool display matches shift lever position, replace instrument cluster. If scan tool display does not match shift lever position, see appropriate article in TRANSMISSIONS.

INSTRUMENT CLUSTER AND PANEL ILLUMINATION MALFUNCTIONS

Note. Perform INSTRUMENT CLUSTER TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-2A after each repair.

1. Using scan tool, select BODY SENSORS. Read dimming level voltage. Rotate dimmer switch to low, then high position. If scan tool displays voltage change from 3 volts (approximately) to zero volts, go to next step. If scan tool does not display voltage change from 3 volts (approximately) to zero volts, go to «INSTRUMENT CLUSTER TEST 3A»(ref-679-S24613631272000031300000) .
2. While observing instrument panel lights, rotate dimmer switch from low to high position. If lights stay at full brightness, go to «INSTRUMENT CLUSTER TEST 9B»(ref-679-S05917250982000031300000) . If lights fail to illuminate, go to «INSTRUMENT CLUSTER TEST 9C»(ref-679-S21487627552000031300000) . If lights illuminate, but do not stay at full brightness, system is currently operating correctly.

INSTRUMENT CLUSTER ILLUMINATION SHORTED TO BATTERY

Note. Perform INSTRUMENT CLUSTER TEST 9A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-2A after each repair.

Note. The following test covers all optional equipment. Skip any steps that do not apply.

1. Disconnect traction control switch connector. Monitor instrument panel lights while adjusting dimmer switch from low to high position. If lights function correctly, repair or replace traction control switch for short to battery voltage. If lights do not function correctly, go to next step.
2. Disconnect radio connectors. Monitor instrument panel lights while adjusting dimmer switch from low to high position. If lights function correctly, repair or replace radio for short to battery voltage. If lights do not function correctly, go to next step.
3. Disconnect ash tray illumination connector. Monitor instrument panel lights while adjusting dimmer switch from low to high position. If lights function correctly, repair or replace ash tray illumination for short to battery voltage. If lights do not function correctly, go to next step.
4. Disconnect Automatic Temperature Control (ATC) connector. Monitor instrument panel lights while adjusting dimmer switch from low to high position. If lights function correctly, repair or replace ATC for short to battery voltage. If lights do not function correctly, go to next step.
5. Disconnect PRND3L illumination connector. Monitor instrument panel lights while adjusting dimmer switch from low to high position. If lights function correctly, repair or replace PRND3L unit for short to battery voltage. If lights do not function correctly, go to next step.
6. Disconnect Overhead Traveler Information System (OTIS) connector. Monitor instrument panel lights while adjusting dimmer switch from low to high position. If lights function correctly, repair or replace OTIS unit for short to battery voltage. If lights do not function correctly, go to next step.
7. Disconnect headlight switch connector. Disconnect instrument cluster Green connector C1. Using external voltmeter, measure voltage between ground and terminal No. 4 (Orange wire) on Green connector. If voltage is 10 volts or less, repair or replace instrument cluster as needed. If voltage is greater than 10 volts, repair headlight switch for short to battery voltage.

INSTRUMENT CLUSTER ILLUMINATION SHORTED TO BATTERY VOLTAGE

Note. Perform INSTRUMENT CLUSTER TEST 9A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-2A after each repair.

Note. The following test covers all optional equipment. Skip any steps that do not apply.

1. Using scan tool, check for instrument cluster DTCs. If scan tool displays PANEL LAMPS DRIVER OUTPUT CIRCUIT SHORTED, go to next step. If scan tool does not display PANEL LAMPS DRIVER OUTPUT CIRCUIT SHORTED, replace instrument cluster.
2. Disconnect traction control switch and instrument cluster Green connector C1. Using external ohmmeter, measure resistance between ground and terminal No. 4 (Orange wire). If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or greater, repair or replace traction control switch for short to ground.
3. Disconnect radio connectors. Using external ohmmeter, measure resistance between ground and terminal No. 4 (Orange wire) on instrument cluster Green connector C1. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or greater, repair or replace radio for short to ground.
4. Disconnect ash tray illumination connector. Using external ohmmeter, measure resistance between ground and terminal No. 4 (Orange wire) on instrument cluster Green connector C1. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or greater, repair ash tray illumination for short to ground.
5. Disconnect Automatic Temperature Control (ATC) connector. Using external ohmmeter, measure resistance between ground and terminal No. 4 (Orange wire) on instrument cluster Green connector C1. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or greater, repair or replace ATC unit for short to ground.
6. Disconnect PRND3L illumination connector. Using external ohmmeter, measure resistance between ground and terminal No. 4 (Orange wire) on instrument cluster Green connector C1. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or greater, repair or replace PRND3L unit for short to ground.
7. Disconnect headlight switch connector. Using external ohmmeter, measure resistance between ground and terminal No. 4 (Orange wire) on instrument cluster Green connector C1. If resistance is less than 5 ohms, replace instrument cluster. If resistance is 5 ohms or greater, repair or replace headlight switch for short to ground.

MALFUNCTIONING GAUGE

Note. Perform INSTRUMENT CLUSTER TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-2A after each repair.

Inspect printed circuit board on instrument cluster. If circuit board is okay, replace sub-dial assembly (4 gauges). If circuit appears faulty, replace circuit board and recalibrate gauges.

TEMPERATURE GAUGE LED MALFUNCTION

Note. Perform INSTRUMENT CLUSTER TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-2A after each repair.

1. Ensure engine cooling system is functioning correctly. Repair as needed. Using scan tool, select BODY SYSTEM TESTS, then PCM MONITOR. If scan tool displays ENGINE CONTROLLER ACTIVE ON THE BUS, go to next step. If scan tool does not display ENGINE CONTROLLER ACTIVE ON THE BUS, go to TEST 8A in appropriate VEHICLE COMMUNICATIONS article.
2. Using scan tool, select MODULE ENGINE CONTROLLER. Read Powertrain Control Module (PCM) DTCs. If scan tool displays ECT SENSOR VOLTAGE TOO HIGH, go to appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE. If scan tool does not display ECT SENSOR VOLTAGE TOO HIGH, go to next step.
3. If scan tool displays ECT SENSOR VOLTAGE TOO LOW, go to appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE. If scan tool does not display ECT SENSOR VOLTAGE TOO LOW, replace PCM. (Scheme 5)

FUEL GAUGE LED MALFUNCTION

Note. Perform INSTRUMENT CLUSTER TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-2A after each repair.

1. Ensure fuel tank is not empty. If fuel gauge always reads empty, go to «INSTRUMENT CLUSTER TEST 12C»(ref-679-S09105161112000031300000). If fuel gauge reads between empty and full, go to «INSTRUMENT CLUSTER TEST 12B»(ref-679-S37858754152000031300000). If fuel gauge always reads full, go to next step.
2. Turn ignition off. Remove rear seat cushion. Disconnect fuel pump harness connector. Using scan tool, select BODY, then SENSORS. Turn ignition on. Using scan tool, read fuel level voltage. If voltage is 9 volts or less, go to next step. If voltage is greater than 9 volts, replace fuel tank sending unit.
3. Turn ignition off. Disconnect Body Control Module (BCM) Blue connector C4. BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1)

INACCURATE FUEL GAUGE

Note. Perform INSTRUMENT CLUSTER TEST 12A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-2A after each repair.

1. Disconnect Body Control Module (BCM) Blue connector C4. BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1)
2. Using external ohmmeter, measure and record resistance between ground and terminal No. 7 (Dark Blue wire) on Blue connector. Add or remove 5 gallons of gas. Measure and record resistance between ground and terminal No. 7 (Dark Blue wire). If resistance measurements match, repair or replace fuel tank sending unit. If resistance measurements do not match, system is currently operating correctly.

FUEL LEVEL VOLTAGE BELOW ONE VOLT

Note. Perform INSTRUMENT CLUSTER TEST 12A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-2A after each repair.

1. Remove rear seat cushion. Disconnect fuel pump 10-pin harness connector. Using scan tool, read fuel level status. If scan tool displays less than one volt, go to next step. If scan tool displays one volt or greater, replace fuel level sending unit.
2. Disconnect Body Control Module (BCM) Blue 16-pin connector C4. BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1)

SPEEDOMETER MALFUNCTION

Note. Perform INSTRUMENT CLUSTER TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-2A after each repair.

1. Using scan tool, select BODY SYSTEMS TESTS, then PCM MONITOR. If scan tool does not display ACTIVE ON THE BUS, go to TEST 8A in appropriate VEHICLE COMMUNICATIONS article. If scan tool displays ACTIVE ON THE BUS, go to next step.
2. Raise and support vehicle. Start engine. Ensure traction control system is off (if equipped). Place shift lever in Drive. Using scan tool, select MIC MONITORS. Read Vehicle Speed Signal (VSS). If vehicle speed increases proportionally as accelerator is depressed, replace instrument cluster. If vehicle speed does not increase, go to appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE.

COMMUNICATION FAILURE WITH TRANSMISSION CONTROL MODULE

Note. Perform INSTRUMENT CLUSTER TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-2A after each repair.

1. While monitoring PRND3L indicator lights, cycle ignition from OFF to RUN position. If all PRND3L indicator lights illuminate, go to next step. If all PRND3L indicator lights do not illuminate, replace instrument cluster.
2. Using scan tool, select TRANSMISSION CONTROL MODULE. Select MONITORS in status displays. Monitor SLP status of shift lever position. While monitoring scan tool, move shift lever through all positions. If scan tool display matches shift lever position, replace instrument cluster. If scan tool display does not match shift lever position, see appropriate article in TRANSMISSIONS.

OIL PRESSURE SWITCH SENSE CIRCUIT SHORT TO GROUND

Note. Perform INSTRUMENT CLUSTER TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-2A after each repair.

1. Turn ignition on. If oil warning light illuminates, go to next step. If oil warning light does not illuminate, go to «INSTRUMENT CLUSTER TEST 15B»(ref-679-S30653568722000031300000). Turn ignition off.
2. Turn ignition off. Check engine oil level. Adjust as needed. Disconnect oil pressure switch. (Scheme 6) If oil pressure warning light is illuminated, go to step 5. If oil pressure warning light is not longer illuminated, go to next step.
3. Remove oil pressure switch. Using appropriate pressure gauge, start engine and read oil pressure. If oil pressure is 4 PSI or greater, go to next step. If oil pressure is less than 4 PSI, see appropriate article in ENGINES.
4. Allow engine to reach normal operating temperature. If oil pressure is 4 PSI or greater, replace oil pressure switch. If oil pressure is less than 4 PSI, see appropriate article in ENGINES.
5. Disconnect instrument cluster. Using external ohmmeter, measure resistance between ground and terminal No. 10 (Gray wire) on instrument cluster Blue 10-pin connector C2. If resistance is less than 5 ohms, repair Gray wire for short to ground. If resistance is 5 ohms or greater, repair or replace instrument cluster.

Scheme 6

OIL PRESSURE SWITCH SENSE OPEN CIRCUIT

Note. Perform INSTRUMENT CLUSTER TEST 15A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-2A after each repair.

1. Disconnect oil pressure switch. (Scheme 6) Connect jumper wire between ground and terminal No. 1 (Gray wire) on oil pressure switch harness connector. If oil pressure warning light illuminated, replace oil pressure switch. If oil pressure warning light is not illuminated, go to next step.
2. Disconnect instrument cluster. Using scan tool in ohmmeter mode, measure resistance at terminal No. 10 (Gray wire) on instrument cluster Blue 10-pin connector C2. If resistance is less than 5 ohms, replace instrument cluster. If resistance is 5 ohms or greater, repair open Gray wire.

SEAT BELT SWITCH CIRCUIT SHORT TO GROUND

Note. Perform INSTRUMENT CLUSTER TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-2A after each repair.

While observing seat belt indicator, cycle key to OFF then ON position. If seat belt indicator is illuminated for 10 seconds, go to CHIME TEST 4B . If seat belt indicator is not illuminated for 10 seconds, replace instrument cluster.

PARKING BRAKE WARNING LIGHT MALFUNCTION

Note. Perform INSTRUMENT CLUSTER TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-2A after each repair.

1. If vehicle is equipped with anti-lock brakes, see appropriate ANTI-LOCK article in BRAKES. If vehicle is not equipped with anti-lock brakes, go to next step.
2. Ensure parking brake is released and operates correctly with no binding. Inspect brake pedal operation. If brake pedal does not operate correctly, see appropriate article in BRAKES. If brake pedal operates correctly, go to next step.
3. If brake warning light does not illuminate with empty brake fluid reservoir, go to «INSTRUMENT CLUSTER TEST 17B»(ref-679-S08484214362000031300000) . If brake warning light does illuminate with empty brake fluid reservoir, go to next step.
4. Turn ignition on. If parking brake warning light is illuminated, go to «INSTRUMENT CLUSTER TEST 17D»(ref-679-S11768885252000031300000) . If parking brake warning light is not illuminated, go to next step.
5. Depress parking brake. If parking brake warning light is illuminated, go to next step. If parking brake warning light is not illuminated, go to «INSTRUMENT CLUSTER TEST 17C»(ref-679-S36905901742000031300000) .
6. Release parking brake. Crank engine while monitoring parking brake warning light. If parking brake warning light is illuminated, system is currently operating correctly. If parking brake warning light is not illuminated, replace instrument cluster.

PARKING BRAKE SWITCH OPEN CIRCUIT

Note. Perform INSTRUMENT CLUSTER TEST 17A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-2A after each repair.

1. Disconnect parking brake switch connector. Connect jumper wire between ground and parking brake switch connector terminal. If parking brake light is illuminated, replace switch. If parking brake light is not illuminated, go to next step.
2. With jumper wire connected, turn ignition off. Disconnect instrument cluster. Using external ohmmeter, measure resistance between ground and terminal No. 3 (Gray/Black wire) on instrument cluster Blue 10-pin connector C2. If resistance is less than 5 ohms, replace instrument cluster. If resistance is 5 ohms or greater, repair open Gray/Black wire.

PARKING BRAKE SWITCH CIRCUIT SHORT TO GROUND

Note. Perform INSTRUMENT CLUSTER TEST 17A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-2A after each repair.

1. Check brake fluid reservoir level. Fill as needed. Disconnect parking brake switch connector. If brake warning light is illuminated, go to next step. If brake warning light is not illuminated, replace parking brake switch.
2. Disconnect brake fluid level switch connector. If brake warning light is illuminated, go to next step. If brake warning light is not illuminated, replace brake fluid level switch.
3. Turn ignition off. Disconnect instrument cluster. Using external ohmmeter, measure resistance between ground and terminal No. 3 (Gray/Black wire). If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or greater, replace instrument cluster.
4. Disconnect ignition switch connector. (Scheme 2) Measure resistance between ground and terminal No. 3 (Gray/Black wire). If resistance is less than 5 ohms, repair Gray/Black wire for short to ground. If resistance is 5 ohms or greater, replace ignition switch.

Note. Perform INSTRUMENT CLUSTER TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-2A after each repair.

1. Turn ignition off. Wait 60 seconds. Check washer fluid reservoir level. Fill as needed. If low washer fluid light failed to illuminate when reservoir was low, go to «INSTRUMENT CLUSTER TEST 18B»(ref-679-S00384600702000031300000) . If low washer fluid light is illuminated when reservoir was low, go to next step.
2. Turn ignition on. Wait 60 seconds. Monitor instrument cluster. If low washer fluid light illuminated, go to next step. If low washer fluid light is not illuminated, system is currently operating correctly.
3. Using scan tool, read washer fluid status. If scan tool displays WASH FLUID: OPEN, replace instrument cluster. If scan tool does not display WASH FLUID: OPEN, go to next step.
4. Disconnect washer fluid switch connector. If scan tool displays WASH FLUID: OPEN, replace washer fluid level switch. If scan tool does not display WASH FLUID: OPEN, go to next step.
5. Turn ignition off. Disconnect instrument cluster Blue 10-pin connector C2. Using external ohmmeter, measure resistance between ground and terminal No. 4 (Black/Tan wire) on Blue connector. If resistance is less than 5 ohms, repair Black/Tan wire for short to ground. If resistance is 5 ohms or greater, replace instrument cluster.

DOOR AJAR INDICATOR CIRCUIT MALFUNCTION

Note. Perform INSTRUMENT CLUSTER TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-2A after each repair.

1. Close all doors. Using scan tool, read door ajar status of each door. If scan tool displays CLOSED for any door, go to «DOOR AJAR TEST 1A»(ref-679-S14844634192000031300000). If scan tool does not display CLOSED for any door, go to next step.
2. While monitoring scan tool, open and close each door. If scan tool display changes as door is opened and closed, go to next step. If scan tool display does not change as door is opened and closed, go to «DOOR AJAR TEST 1A»(ref-679-S14844634192000031300000).
3. Ensure all doors are closed. If door ajar indicator light illuminated constantly, go to next step. If door ajar indicator light is not illuminated, go to step 5.
4. Disconnect Body Control Module (BCM) Gray 14-pin connector C1. BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1)
5. Turn ignition to LOCK position. While observing door ajar indicator light, turn ignition switch to RUN position. If indicator light illuminates, go to «DOOR AJAR TEST 1A»(ref-679-S14844634192000031300000). If indicator light does not illuminate, replace instrument cluster.

Note. Perform INSTRUMENT CLUSTER TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-2A after each repair.

1. Turn ignition on. Ensure that trunk is aligned properly and fully closed. If trunk ajar indicator light is illuminated, go to step 6 . If trunk ajar indicator light is not illuminated, go to next step.
2. Open trunk. If trunk ajar indicator light is illuminated, system is currently operating correctly. If trunk ajar indicator light is not illuminated, go to next step.
3. Disconnect decklid release solenoid/decklid ajar connector. Connect jumper wire between terminals No. 1 (Black wire) and 2 (Tan/Black wire) on harness connector. If trunk ajar indicator light is illuminated, replace trunk ajar switch. If trunk ajar indicator light is not illuminated, go to next step.
4. Disconnect instrument cluster Blue 10-pin connector C2. Using external ohmmeter, measure resistance between ground and terminal No. 9 (Tan/Black wire) on Blue harness connector. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or greater, repair open Tan/Black wire.
5. Disconnect instrument cluster Green 10-pin connector C1. Using external voltmeter, measure voltage between ground and terminal No. 2 (Red/White wire) on Green harness connector. If voltage is 10 volts or less, repair open Red/White wire. If voltage is greater than 10 volts, replace instrument cluster.
6. Turn ignition on. Disconnect decklid release solenoid/decklid ajar connector. If trunk ajar indicator light is illuminated, go to next step. If trunk ajar indicator light is not illuminated, replace trunk ajar switch.
7. Disconnect instrument cluster Blue 10-pin connector C2. Using external ohmmeter, measure resistance between ground and terminal No. 9 (Tan/Black wire) on Blue harness connector. If resistance is less than 5 ohms, repair Tan/Black wire for short to ground. If resistance is 5 ohms or greater, replace instrument cluster.

IDENTIFYING INTERIOR LIGHT SYSTEM MALFUNCTIONS

Note. Perform SYSTEM ID TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-2A after each repair.

1. Using scan tool, select BODY, then BODY COMPUTER. Verify communication with Body Control Module (BCM). If scan tool displays NO RESPONSE, see appropriate VEHICLE COMMUNICATIONS article. If scan tool does not display NO RESPONSE, go to next step.
2. Using scan tool, select READ DTCS. If scan tool displays HEADLAMP SWITCH INPUT FAILURE, go to «INTERIOR LIGHT TEST 2A»(ref-679-S27786597202000031300000) . If HEADLAMP SWITCH INPUT FAILURE DTC is not displayed, identify problem(s) listed in «INTERIOR LIGHT DIAGNOSTIC TEST DIRECTORY»(ref-679-S03821532072000031300000) table and perform indicated test(s).

INTERIOR LIGHT DIAGNOSTIC TEST DIRECTORY

COURTESY LIGHT OUTPUT SHORT TO BATTERY

Note. Perform INTERIOR LIGHT TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-2A after each repair.

Disconnect driver's door courtesy light. Disconnect junction block fuse No. 19. Junction block is located behind left end cap of instrument panel. (Scheme 1)

COURTESY LIGHTS INOPERATIVE FROM ALL DOORS & COURTESY LIGHT SWITCH

Note. Perform INTERIOR LIGHT TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-2A after each repair.

1. Using scan tool, actuate courtesy/dome lights. If lights illuminate, go to step 4. If lights do not illuminate, go to next step.
2. Access headliner connector at junction block. (Scheme 4) Junction block is located behind left end cap of instrument panel. (Scheme 1)
3. Backprobing headliner connector, measure voltage between ground and terminal No. 8 (Yellow wire). If voltage is 10 volts or less, go to next step. If voltage is greater than 10 volts, go to «INTERIOR LIGHT TEST 3B»(ref-679-S26050359432000031300000).
4. Disconnect any courtesy light assembly. Using external voltmeter, measure voltage between ground and fused B+ circuit (Pink wire) on light socket. If voltage is 10 volts or less, repair open Pink wire. If voltage is greater than 10 volts, repair open courtesy light driver circuit (Yellow or Light Green wire).
5. Stop courtesy light actuation. Open driver's door. Using scan tool, read driver's door ajar switch status. If scan tool displays LFDOOR AJAR: CLOSED, replace Body Control Module (BCM). If scan tool does not display LFDOOR AJAR: CLOSED, go to «DOOR AJAR TEST 2A»(ref-679-S11083257642000031300000).

Note. Perform INTERIOR LIGHT TEST 3A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-2A after each repair.

Remove BCM. Using external voltmeter, measure voltage between ground and terminal No. 2 (courtesy light driver circuit) on junction block internal 20-pin connector. If voltage is 10 volts or less, repair or replace junction block. If voltage is greater than 10 volts, replace BCM.

INOPERATIVE COURTESY LIGHTS

Note. Perform INTERIOR LIGHT TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-2A after each repair.

Remove inoperative bulb. Replace as needed. If bulb is okay, disconnect inoperative light assembly. Using external voltmeter, measure voltage between ground and fused B+ circuit (Pink wire). If voltage is 10 volts or less, repair open Pink wire. If voltage is greater than 10 volts, repair open courtesy light driver circuit (Yellow or Light Green wire).

COURTESY LIGHTS REMAIN ON

Note. Perform INTERIOR LIGHT TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-2A after each repair.

1. Ensure all doors are aligned properly and courtesy light switch is off. Adjust as needed. Close all doors. Using scan tool, read driver's door ajar switch status. If scan tool displays LFDOOR AJAR: CLOSED, go to «DOOR AJAR TEST 3A»(ref-679-S25153510042000031300000). If scan tool does not display LFDOOR AJAR: CLOSED, go to next step.
2. Using scan tool, read door ajar switch status. If scan tool displays any (RF, LR, RR) DOOR AJAR: CLOSED, go to «DOOR AJAR TEST 1A»(ref-679-S14844634192000031300000). If scan tool does not display any (RF, LR, RR) DOOR AJAR: CLOSED, go to next step.
3. Disconnect Body Control Module (BCM) from junction block. BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1)

INOPERATIVE COURTESY LIGHT SWITCH

Note. Perform INTERIOR LIGHT TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-2A after each repair.

Turn dash mounted courtesy light switch to ON position. Using scan tool, select INPUTS/OUTPUTS. Read courtesy light switch status. If scan tool displays ON, replace Body Control Module (BCM). BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1) If scan tool does not display ON, replace headlight switch.

IDENTIFYING MEMORY SYSTEM MALFUNCTIONS

Note. Perform SYSTEM ID TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-2A after each repair.

Note. If seat frame has been unbolted for accessibility, frame must be connected to ground during testing.

1. Using scan tool, select BODY COMPUTER, then MEMORY SEAT MODULE. Read DTCs. If no codes are present, operate all seat and mirror switches while monitoring scan tool for DTCs. Operate seat heaters. Reset memory positions. If any codes are set, go to next step. If no codes are set, perform SWITCH SELF-TEST using scan tool.
2. Record DTC(s) that are set. Using scan tool, erase DTCs. Operate all seat and mirror switches while monitoring scan tool for DTCs. Operate seat heaters. Reset memory positions. If original DTC(s) are set, see «MEMORY SYSTEM DIAGNOSTIC TEST DIRECTORY»(ref-679-S23251220642000031300000) table and perform indicated test(s). If no codes reset, see «MEMORY SYSTEM SYMPTOM DIAGNOSTIC TEST DIRECTORY»(ref-679-S23441277752004041600000) table.

MEMORY SYSTEM DIAGNOSTIC TEST DIRECTORY

MEMORY SYSTEM SYMPTOM DIAGNOSTIC TEST DIRECTORY

FRONT RISER DOWN POSITION STUCK

Note. Perform MEMORY SYSTEM TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-4A after each repair.

Scheme 7

1. Disconnect power seat switch 10-pin connector. Using voltmeter, measure voltage between ground and terminal No. 6 (Red/Light Green wire) on power seat switch harness connector. If voltage is.5 volts or less, replace power seat switch. If voltage is greater than.5 volts, go to next step.
2. Disconnect Memory Heated Seat/Mirror Module (MHSMM) 16-pin harness connector. MHSMM is located under front of seat. (Scheme 7) Measure voltage between ground and terminal No. 6 (Red/Light Green wire) on power seat switch harness connector. If voltage is.5 volts or less, replace MHSMM. If voltage is greater than.5 volts, repair Red/Light Green wire for short to voltage.

FRONT RISER UP POSITION STUCK

Note. Perform MEMORY SYSTEM TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-4A after each repair.

1. Disconnect power seat switch 10-pin connector. Using voltmeter, measure voltage between ground and terminal No. 9 (Yellow/Light Green wire) on power seat switch harness connector. If voltage is.5 volts or less, replace power seat switch. If voltage is greater than.5 volts, go to next step.
2. Disconnect Memory Heated Seat/Mirror Module (MHSMM) 16-pin harness connector. MHSMM is located under front of seat. (Scheme 7) Measure voltage between ground and terminal No. 9 (Yellow/Light Green wire) on power seat switch harness connector. If voltage is.5 volts or less, replace MHSMM. If voltage is greater than.5 volts, repair Yellow/Light Green wire for short to voltage.

FRONT RISER SENSOR OUT OF RANGE LOW

Note. Perform MEMORY SYSTEM TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-4A after each repair.

1. Disconnect Memory Heated Seat/Mirror Module (MHSMM) 16-pin harness connector. MHSMM is located under front of seat. (Scheme 7) Using scan tool, select BODY MEMORY SEAT MODULE, then SENSORS. Read front riser position sensor voltage. If voltage is.7 volts or greater, replace MHSMM. If voltage is less than.7 volts, go to next step.
2. Disconnect front riser position sensor 3-pin connector. Using ohmmeter, measure resistance between ground and terminal "B" (Brown wire) on front riser position sensor harness connector. If resistance is less than 1000 ohms, repair Brown wire for short to ground. If resistance is 1000 ohms or greater, replace track assembly (includes front riser motor).

FRONT RISER SENSOR OUT OF RANGE HIGH

Note. Perform MEMORY SYSTEM TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-4A after each repair.

1. Disconnect Memory Heated Seat/Mirror Module (MHSMM) 16-pin harness connector. MHSMM is located under front of seat. (Scheme 7) Using scan tool, select BODY MEMORY SEAT MODULE, then SENSORS. Read front riser position sensor voltage. If voltage is 4.5 volts or less, replace MHSMM. If voltage is greater than 4.5 volts, go to next step.
2. Disconnect front riser position sensor 3-pin connector. Using voltmeter, measure voltage between ground and terminal "B" (Brown wire) on front riser position sensor harness connector. If voltage is.2 volts or greater, repair Brown wire for short to voltage. If voltage is less than.2 volts, replace track assembly (includes front riser motor).

REAR RISER DOWN POSITION STUCK

Note. Perform MEMORY SYSTEM TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-4A after each repair.

1. Disconnect power seat switch 10-pin connector. Using voltmeter, measure voltage between ground and terminal No. 7 (Red/White wire) on power seat switch harness connector. If voltage is.5 volts or less, replace power seat switch. If voltage is greater than.5 volts, go to next step.
2. Disconnect Memory Heated Seat/Mirror Module (MHSMM) 16-pin harness connector. MHSMM is located under front of seat. (Scheme 7) Measure voltage between ground and terminal No. 7 (Red/White wire) on power seat switch harness connector. If voltage is.5 volts or less, replace MHSMM. If voltage is greater than.5 volts, repair Red/White wire for short to voltage.

REAR RISER UP POSITION STUCK

Note. Perform MEMORY SYSTEM TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-4A after each repair.

1. Disconnect power seat switch 10-pin connector. Using voltmeter, measure voltage between ground and terminal No. 8 (Yellow/White wire) on power seat switch harness connector. If voltage is.5 volts or less, replace power seat switch. If voltage is greater than.5 volts, go to next step.
2. Disconnect Memory Heated Seat/Mirror Module (MHSMM) 16-pin harness connector. MHSMM is located under front of seat. (Scheme 7) Measure voltage between ground and terminal No. 9 (Yellow/White wire) on power seat switch harness connector. If voltage is.5 volts or less, replace MHSMM. If voltage is greater than.5 volts, repair Yellow/White wire for short to voltage.

REAR RISER SENSOR OUT OF RANGE LOW

Note. Perform MEMORY SYSTEM TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-4A after each repair.

1. Disconnect Memory Heated Seat/Mirror Module (MHSMM) 16-pin harness connector. MHSMM is located under front of seat. (Scheme 7) Using scan tool, select BODY MEMORY SEAT MODULE, then SENSORS. Read rear riser position sensor voltage. If voltage is.7 volts or greater, replace MHSMM. If voltage is less than.7 volts, go to next step.
2. Disconnect rear riser position sensor 3-pin connector. Using ohmmeter, measure resistance between ground and terminal "B" (Light Blue/Red wire) on rear riser position sensor harness connector. If resistance is less than 1000 ohms, repair Light Blue/Red wire for short to ground. If resistance is 1000 ohms or greater, replace track assembly (includes rear riser motor).

REAR RISER SENSOR OUT OF RANGE HIGH

Note. Perform MEMORY SYSTEM TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-4A after each repair.

1. Disconnect Memory Heated Seat/Mirror Module (MHSMM) 16-pin harness connector. MHSMM is located under front of seat. (Scheme 7) Using scan tool, select BODY MEMORY SEAT MODULE, then SENSORS. Read rear riser position sensor voltage. If voltage is 4.5 volts or less, replace MHSMM. If voltage is greater than 4.5 volts, go to next step.
2. Disconnect rear riser position sensor 3-pin connector. Using voltmeter, measure voltage between ground and terminal "B" (Light Blue/Red wire) on rear riser position sensor harness connector. If voltage is.2 volts or greater, repair Light Blue/Red wire for short to voltage. If voltage is less than.2 volts, replace track assembly (includes front riser motor).

HORIZONTAL FORWARD POSITION STUCK

Note. Perform MEMORY SYSTEM TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-4A after each repair.

1. Disconnect power seat switch 10-pin connector. Using voltmeter, measure voltage between ground and terminal No. 10 (Yellow/Light Blue wire) on power seat switch harness connector. If voltage is.5 volts or less, replace power seat switch. If voltage is greater than.5 volts, go to next step.
2. Disconnect Memory Heated Seat/Mirror Module (MHSMM) 16-pin harness connector. MHSMM is located under front of seat. (Scheme 7) Measure voltage between ground and terminal No. 10 (Yellow/Light Blue wire) on power seat switch harness connector. If voltage is.5 volts or less, replace MHSMM. If voltage is greater than.5 volts, repair Yellow/Light Blue wire for short to voltage.

HORIZONTAL REARWARD POSITION STUCK

Note. Perform MEMORY SYSTEM TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-4A after each repair.

1. Disconnect power seat switch 10-pin connector. Using voltmeter, measure voltage between ground and terminal No. 3 (Red/Light Blue wire) on power seat switch harness connector. If voltage is.5 volts or less, replace power seat switch. If voltage is greater than.5 volts, go to next step.
2. Disconnect Memory Heated Seat/Mirror Module (MHSMM) 16-pin harness connector. MHSMM is located under front of seat. (Scheme 7) Measure voltage between ground and terminal No. 9 (Red/Light Blue wire) on power seat switch harness connector. If voltage is.5 volts or less, replace MHSMM. If voltage is greater than.5 volts, repair Red/Light Blue wire for short to voltage.

HORIZONTAL SENSOR OUT OF RANGE LOW

Note. Perform MEMORY SYSTEM TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-4A after each repair.

1. Disconnect Memory Heated Seat/Mirror Module (MHSMM) 16-pin harness connector. MHSMM is located under front of seat. (Scheme 7) Using scan tool, select BODY MEMORY SEAT MODULE, then SENSORS. Read horizontal position sensor voltage. If voltage is.6 volts or greater, replace MHSMM. If voltage is less than.6 volts, go to next step.
2. Disconnect horizontal position sensor 3-pin connector. Using ohmmeter, measure resistance between ground and terminal "B" (Violet/Red wire) on rear riser position sensor harness connector. If resistance is less than 1000 ohms, repair Violet/Red wire for short to ground. If resistance is 1000 ohms or greater, replace track assembly (includes horizontal motor).

HORIZONTAL SENSOR OUT OF RANGE HIGH

Note. Perform MEMORY SYSTEM TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-4A after each repair.

1. Disconnect Memory Heated Seat/Mirror Module (MHSMM) 16-pin harness connector. MHSMM is located under front of seat. (Scheme 7) Using scan tool, select BODY MEMORY SEAT MODULE, then SENSORS. Read horizontal position sensor voltage. If voltage is 4.8 volts or less, replace MHSMM. If voltage is greater than 4.8 volts, go to next step.
2. Disconnect horizontal position sensor 3-pin connector. Using voltmeter, measure voltage between ground and terminal "B" (Violet/Red wire) on horizontal position sensor harness connector. If voltage is.2 volts or greater, repair Violet/Red wire for short to voltage. If voltage is less than.2 volts, replace track assembly (includes horizontal motor).

RECLINER DOWN POSITION STUCK

Note. Perform MEMORY SYSTEM TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-4A after each repair.

1. Disconnect power seat switch 10-pin connector. Using voltmeter, measure voltage between ground and terminal No. 2 (Gray/White wire) on power seat switch harness connector. If voltage is.5 volts or less, replace power seat switch. If voltage is greater than.5 volts, go to next step.
2. Disconnect Memory Heated Seat/Mirror Module (MHSMM) 16-pin harness connector. MHSMM is located under front of seat. (Scheme 7) Measure voltage between ground and terminal No. 2 (Gray/White wire) on power seat switch harness connector. If voltage is.5 volts or less, replace MHSMM. If voltage is greater than.5 volts, repair Gray/White wire for short to voltage.

RECLINER UP POSITION STUCK

Note. Perform MEMORY SYSTEM TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-4A after each repair.

1. Disconnect power seat switch 10-pin connector. Using voltmeter, measure voltage between ground and terminal No. 4 (Gray/Light Blue wire) on power seat switch harness connector. If voltage is.5 volts or less, replace power seat switch. If voltage is greater than.5 volts, go to next step.
2. Disconnect Memory Heated Seat/Mirror Module (MHSMM) 16-pin harness connector. MHSMM is located under front of seat. (Scheme 7) Measure voltage between ground and terminal No. 4 (Gray/Light Blue wire) on power seat switch harness connector. If voltage is.5 volts or less, replace MHSMM. If voltage is greater than.5 volts, repair Gray/Light Blue wire for short to voltage.

RECLINER SENSOR OUT OF RANGE LOW

Note. Perform MEMORY SYSTEM TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-4A after each repair.

1. Disconnect Memory Heated Seat/Mirror Module (MHSMM) 16-pin harness connector. MHSMM is located under front of seat. (Scheme 7) Using scan tool, select BODY MEMORY SEAT MODULE, then SENSORS. Read RECLINER POSITION SENSOR voltage. If voltage is.6 volts or greater, replace MHSMM. If voltage is less than.6 volts, go to next step.
2. Disconnect recliner position sensor 3-pin connector. Using ohmmeter, measure resistance between ground and terminal "B" (Light Blue wire) on recliner position sensor harness connector. If resistance is less than 1000 ohms, repair Light Blue wire for short to ground. If resistance is 1000 ohms or greater, replace track assembly (includes recliner motor).

RECLINER SENSOR OUT OF RANGE HIGH

Note. Perform MEMORY SYSTEM TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-4A after each repair.

1. Disconnect Memory Heated Seat/Mirror Module (MHSMM) 16-pin harness connector. MHSMM is located under front of seat. (Scheme 7) Using scan tool, select BODY MEMORY SEAT MODULE, then SENSORS. Read RECLINER POSITION SENSOR voltage. If voltage is 4.8 volts or less, replace MHSMM. If voltage is greater than 4.8 volts, go to next step.
2. Disconnect horizontal position sensor 3-pin connector. Using voltmeter, measure voltage between ground and terminal "B" (Light Blue wire) on horizontal position sensor harness connector. If voltage is.2 volts or greater, repair Light Blue wire for short to voltage. If voltage is less than.2 volts, replace track assembly (includes recliner motor).

MEMORY POSITION NO. 1 STUCK

Note. Perform MEMORY SYSTEM TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-4A after each repair.

1. Disconnect memory switch 6-pin connector. Using scan tool, select BODY MEMORY SEAT MODULE, then INPUT/OUTPUT. Read MEMORY POSITION NO. 1 status. If scan tool displays OPEN, replace memory switch. If scan tool does not display OPEN, go to next step.
2. Turn ignition off. Disconnect Memory Heated Seat/Mirror Module (MHSMM) 16-pin harness connector. MHSMM is located under front of seat. (Scheme 7) Using ohmmeter, measure resistance between ground and terminal No. 6 (Pink/Red wire) on memory switch harness connector. If resistance is less than 1000 ohms, repair Pink/Red wire for short to ground. If resistance is 1000 ohms or greater, replace MHSMM.

MEMORY POSITION NO. 2 STUCK

Note. Perform MEMORY SYSTEM TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-4A after each repair.

1. Disconnect memory switch 6-pin connector. Using scan tool, select BODY MEMORY SEAT MODULE, then INPUT/OUTPUT. Read MEMORY POSITION NO. 2 status. If scan tool displays OPEN, replace memory switch. If scan tool does not display OPEN, go to next step.
2. Turn ignition off. Disconnect Memory Heated Seat/Mirror Module (MHSMM) 16-pin harness connector. MHSMM is located under front of seat. (Scheme 7) Using ohmmeter, measure resistance between ground and terminal No. 4 (Pink/White wire) on memory switch harness connector. If resistance is less than 1000 ohms, repair Pink/White wire for short to ground. If resistance is 1000 ohms or greater, replace MHSMM.

MEMORY SET "S" POSITION STUCK

Note. Perform MEMORY SYSTEM TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-4A after each repair.

1. Disconnect memory switch 6-pin connector. Using scan tool, select BODY MEMORY SEAT MODULE, then INPUT/OUTPUT. Read MEMORY SET status. If scan tool displays OPEN, replace memory switch. If scan tool does not display OPEN, go to next step.
2. Turn ignition off. Disconnect Memory Heated Seat/Mirror Module (MHSMM) 16-pin harness connector. MHSMM is located under front of seat. (Scheme 7) Using ohmmeter, measure resistance between ground and terminal No. 5 (Pink/Black wire) on memory switch harness connector. If resistance is less than 1000 ohms, repair Pink/Black wire for short to ground. If resistance is 1000 ohms or greater, replace MHSMM.

LEFT SEAT HEAT OUTPUT OPEN

Note. Perform MEMORY SYSTEM TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-4A after each repair.

1. Turn ignition off. Disconnect Memory Heated Seat/Mirror Module (MHSMM) 12-pin harness connector. MHSMM is located under front of seat. (Scheme 7) Using ohmmeter, measure resistance between ground and terminal No. 12 (Red/Dark Green wire) on 12-pin harness connector. If resistance is less than 8.5 ohms, replace MHSMM. If resistance is 8.5 ohms or greater, go to next step.
2. Disconnect left seat cushion heater 4-pin connector. Measure resistance of Red/Dark Green wire between terminal No. 12 on MHSMM 12-pin harness connector and terminal "A" on left seat cushion heater 4-pin harness connector. If resistance is 5 ohms or greater, repair open Red/Dark Green wire. If resistance is less than 5 ohms, go to next step.
3. Measure resistance between terminals "A" (Red/Dark Green wire) and "B" (Brown/Black wire) on left seat cushion heater component connector. If resistance is 2.5 ohms or greater, replace seat cushion. If resistance is less than 2.5 ohms, go to next step.
4. Disconnect seat back heater 2-pin connector. Measure resistance of Brown/Black wire between terminal "B" on seat cushion heater 4-pin component connector and terminal "A" on seat back heater 2-pin harness connector. If resistance is 5 ohms or greater, repair open Brown/Black wire. If resistance is less than 5 ohms, go to next step.
5. Measure resistance between seat back heater 2-pin component connector. If resistance is 2.5 ohms or greater, replace seat back. If resistance is 2.5 ohms or less, repair open Black wire (ground circuit).

LEFT SEAT HEAT OUTPUT SHORTED TO GROUND

Note. Perform MEMORY SYSTEM TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-4A after each repair.

1. Disconnect left seat cushion heater 4-pin connector. Using scan tool, erase DTCs. Turn ignition off. Turn ignition on. Using scan tool, read DTCs. If LEFT SEAT HEAT OUTPUT OPEN fault message is present, go to step 4 . If LEFT SEAT HEAT OUTPUT OPEN fault message is not present, go to next step.
2. Disconnect seat back heater 2-pin connector. Using ohmmeter, measure resistance between ground and terminal "A" (Red/Dark Green wire) on left seat cushion heater component connector. If resistance is less than 1000 ohms, replace seat cushion. If resistance is 1000 ohms or greater, go to next step.
3. Measure resistance between ground and terminal "A" (Brown/Black wire) on seat back heater component connector. If resistance is less than 1000 ohms, repair Brown/Black wire for short to ground. If resistance is 1000 ohms or greater, replace seat back.
4. Turn ignition off. Using ohmmeter, measure resistance between ground and terminal "A" (Red/Dark Green wire) on left seat cushion heater harness connector. If resistance is less than 1000 ohms, repair Red/Dark Green wire for short to ground. If resistance is 1000 ohms or greater, replace Memory Heated Seat/Mirror Module (MHSMM).

LEFT HEATED SEAT SWITCH STUCK IN LOW STATE

Note. Perform MEMORY SYSTEM TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-4A after each repair.

1. Disconnect left seat heater switch 6-pin connector. Using scan tool, erase DTCs. Turn ignition off. Turn ignition on. Using scan tool, read DTCs. If LEFT HEATED SEAT SWITCH OPEN/SHORTED TO GROUND fault message is present, replace seat heater switch. If LEFT HEATED SEAT SWITCH OPEN/SHORTED TO GROUND fault message is not present, go to next step.
2. Disconnect Memory Heated Seat/Mirror Module (MHSMM) 16-pin harness connector. MHSMM is located under front of seat. (Scheme 7) Using voltmeter, measure voltage between ground and terminal No. 6 (Tan/Dark Green wire) on left seat heater switch harness connector. If voltage is greater than.2 volts, repair Tan/Dark Green wire for short to voltage. If voltage is.2 volts or less, replace MHSMM.

LEFT HEATED SEAT SWITCH STUCK IN HIGH STATE

Note. Perform MEMORY SYSTEM TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-4A after each repair.

1. Disconnect left seat heater switch 6-pin connector. Using scan tool, erase DTCs. Turn ignition off. Turn ignition on. Using scan tool, read DTCs. If LEFT HEATED SEAT SWITCH OPEN/SHORTED TO GROUND fault message is present, replace seat heater switch. If LEFT HEATED SEAT SWITCH OPEN/SHORTED TO GROUND fault message is not present, go to next step.
2. Disconnect Memory Heated Seat/Mirror Module (MHSMM) 16-pin harness connector. MHSMM is located under front of seat. (Scheme 7) Using voltmeter, measure voltage between ground and terminal No. 6 (Tan/Dark Green wire) on left seat heater switch harness connector. If voltage is greater than.2 volts, repair Tan/Dark Green wire for short to voltage. If voltage is.2 volts or less, replace MHSMM.

LEFT HEATED SEAT SWITCH OPEN/SHORTED TO GROUND

Note. Perform MEMORY SYSTEM TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-4A after each repair.

1. Disconnect Memory Heated Seat/Mirror Module (MHSMM) 26-pin harness connector. MHSMM is located under front of seat. (Scheme 7) Using voltmeter, measure voltage between ground and terminal No. 18 (Tan/Dark Green wire) on MHSMM harness connector. If voltage is greater than 10 volts, replace MHSMM. If voltage is 10 volts or less, go to next step.
2. Disconnect left seat heater switch 6-pin connector. Using ohmmeter, measure resistance between ground and terminal No. 6 (Tan/Dark Green wire) on left seat heater switch harness connector. If resistance is less than 100 ohms, repair Tan/Dark Green wire for short to ground. If resistance is 100 ohms or greater, go to next step.
3. Connect jumper wire between ground and terminal No. 18 (Tan/Dark Green wire) on MHSMM harness connector. Measure resistance between ground and terminal No. 6 (Tan/Dark Green wire) on left seat heater switch harness connector. If resistance is less than 5 ohms, replace seat heater switch. If resistance is 100 ohms or greater, repair open Tan/Dark Green wire.

LEFT THERMISTOR OUT OF RANGE LOW

Note. Perform MEMORY SYSTEM TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-4A after each repair.

1. Disconnect Memory Heated Seat/Mirror Module (MHSMM) 26-pin harness connector. MHSMM is located under front of seat. (Scheme 7) Using ohmmeter, measure resistance between ground and terminal No. 4 (Tan/Light Blue wire) on MHSMM harness connector. If resistance is 100 ohms or greater, replace MHSMM. If resistance is less than 100 ohms, go to next step.
2. Disconnect left seat cushion heater 4-pin connector. Measure resistance between ground and terminal "C" (Tan/Light Blue wire) on left seat cushion heater harness connector. If resistance is 1000 ohms or greater, replace left seat cushion. If resistance is less than 1000 ohms, repair Tan/Light Blue wire for short to ground.

LEFT THERMISTOR OUT OF RANGE HIGH

Note. Perform MEMORY SYSTEM TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-4A after each repair.

1. Disconnect left seat cushion heater 4-pin connector. Turn ignition on. Turn left seat heater on. Using voltmeter, measure voltage between ground and terminal "D" (Black/Dark Green wire) on left seat cushion heater harness connector. If voltage is greater than 5.5 volts, go to step 3. If voltage is 5.5 volts or less, go to next step.
2. Measure voltage between ground and terminal "C" (Tan/Light Blue wire) on left seat cushion heater harness connector. If voltage is greater than.5 volts, repair (Tan/Light Blue wire) for short to voltage. If voltage is.5 volts or less, replace left seat cushion.
3. Disconnect Memory Heated Seat/Mirror Module (MHSMM) 26-pin harness connector. MHSMM is located under front of seat. (Scheme 7) Using voltmeter, measure voltage between ground and terminal "D" (Black/Dark Green wire) on left seat cushion heater harness connector. If voltage is greater than.3 volts, repair Black/Dark Green wire for short to voltage. If voltage is.3 volts or less, replace MHSMM.

RIGHT SEAT HEAT OUTPUT OPEN

Note. Perform MEMORY SYSTEM TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-4A after each repair.

1. Turn ignition off. Disconnect Memory Heated Seat/Mirror Module (MHSMM) 12-pin harness connector. MHSMM is located under front of seat. (Scheme 7) Using ohmmeter, measure resistance between ground and terminal No. 6 (Red/Tan wire) on 12-pin harness connector. If resistance is less than 8.5 ohms, replace MHSMM. If resistance is 8.5 ohms or greater, go to next step.
2. Disconnect left seat cushion heater 4-pin connector. Measure resistance of Red/Tan wire between terminal No. 6 on MHSMM 12-pin harness connector and terminal "A" on left seat cushion heater 4-pin harness connector. If resistance is 5 ohms or greater, repair open Red/Tan wire. If resistance is less than 5 ohms, go to next step.
3. Measure resistance between terminals "A" (Red/Tan wire) and "B" (Brown/Black wire) on left seat cushion heater component connector. If resistance is 2.5 ohms or greater, replace seat cushion. If resistance is less than 2.5 ohms, go to next step.
4. Disconnect seat back heater 2-pin connector. Measure resistance of Brown/Black wire between terminal "B" on seat cushion heater 4-pin component connector and terminal "A" on seat back heater 2-pin harness connector. If resistance is 5 ohms or greater, repair open Brown/Black wire. If resistance is less than 5 ohms, go to next step.
5. Measure resistance between seat back heater 2-pin component connector. If resistance is 2.5 ohms or greater, replace seat back. If resistance is 2.5 ohms or less, repair open Black wire (ground circuit).

RIGHT SEAT HEAT OUTPUT SHORTED TO GROUND

Note. Perform MEMORY SYSTEM TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-4A after each repair.

1. Disconnect right seat cushion heater 4-pin connector. Using scan tool, erase DTCs. Turn ignition off. Turn ignition on. Using scan tool, read DTCs. If RIGHT SEAT HEAT OUTPUT OPEN fault message is present, go to step 4 . If RIGHT SEAT HEAT OUTPUT OPEN fault message is not present, go to next step.
2. Disconnect seat back heater 2-pin connector. Using ohmmeter, measure resistance between ground and terminal "A" (Red/Tan wire) on right seat cushion heater component connector. If resistance is less than 1000 ohms, replace seat cushion. If resistance is 1000 ohms or greater, go to next step.
3. Measure resistance between ground and terminal "A" (Brown/Black wire) on seat back heater component connector. If resistance is less than 1000 ohms, repair Brown/Black wire for short to ground. If resistance is 1000 ohms or greater, replace seat back.
4. Turn ignition off. Using ohmmeter, measure resistance between ground and terminal "A" (Red/Tan wire) on right seat cushion heater harness connector. If resistance is less than 1000 ohms, repair Red/Tan wire for short to ground. If resistance is 1000 ohms or greater, replace Memory Heated Seat/Mirror Module (MHSMM).

RIGHT HEATED SEAT SWITCH STUCK IN LOW STATE

Note. Perform MEMORY SYSTEM TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-4A after each repair.

1. Disconnect right seat heater switch 6-pin connector. Using scan tool, erase DTCs. Turn ignition off. Turn ignition on. Using scan tool, read DTCs. If RIGHT HEATED SEAT SWITCH OPEN/SHORTED TO GROUND fault message is present, replace seat heater switch. If RIGHT HEATED SEAT SWITCH OPEN/SHORTED TO GROUND fault message is not present, go to next step.
2. Disconnect Memory Heated Seat/Mirror Module (MHSMM) 16-pin harness connector. MHSMM is located under front of seat. (Scheme 7) Using voltmeter, measure voltage between ground and terminal No. 6 (Tan/Light Green wire) on right seat heater switch harness connector. If voltage is greater than.2 volts, repair Tan/Light Green wire for short to voltage. If voltage is.2 volts or less, replace MHSMM.

RIGHT HEATED SEAT SWITCH STUCK IN HIGH STATE

Note. Perform MEMORY SYSTEM TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-4A after each repair.

1. Disconnect right seat heater switch 6-pin connector. Using scan tool, erase DTCs. Turn ignition off. Turn ignition on. Using scan tool, read DTCs. If RIGHT HEATED SEAT SWITCH OPEN/SHORTED TO GROUND fault message is present, replace seat heater switch. If RIGHT HEATED SEAT SWITCH OPEN/SHORTED TO GROUND fault message is not present, go to next step.
2. Disconnect Memory Heated Seat/Mirror Module (MHSMM) 16-pin harness connector. MHSMM is located under front of seat. (Scheme 7) Using voltmeter, measure voltage between ground and terminal No. 6 (Tan/Light Green wire) on right seat heater switch harness connector. If voltage is greater than.2 volts, repair Tan/Light Green wire for short to voltage. If voltage is.2 volts or less, replace MHSMM.

RIGHT HEATED SEAT SWITCH OPEN/SHORTED TO GROUND

Note. Perform MEMORY SYSTEM TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-4A after each repair.

1. Disconnect Memory Heated Seat/Mirror Module (MHSMM) 26-pin harness connector. MHSMM is located under front of seat. (Scheme 7) Using voltmeter, measure voltage between ground and terminal No. 5 (Tan/Light Green wire) on MHSMM harness connector. If voltage is greater than 10 volts, replace MHSMM. If voltage is 10 volts or less, go to next step.
2. Disconnect right seat heater switch 6-pin connector. Using ohmmeter, measure resistance between ground and terminal No. 6 (Tan/Light Green wire) on right seat heater switch harness connector. If resistance is less than 100 ohms, repair Tan/Dark Green wire for short to ground. If resistance is 100 ohms or greater, go to next step.
3. Connect jumper wire between ground and terminal No. 5 (Tan/Light Green wire) on MHSMM harness connector. Measure resistance between ground and terminal No. 6 (Tan/Light Green wire) on right seat heater switch harness connector. If resistance is less than 5 ohms, replace seat heater switch. If resistance is 100 ohms or greater, repair open Tan/Light Green wire.

RIGHT THERMISTOR OUT OF RANGE LOW

Note. Perform MEMORY SYSTEM TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-4A after each repair.

1. Disconnect Memory Heated Seat/Mirror Module (MHSMM) 26-pin harness connector. MHSMM is located under front of seat. (Scheme 7) Using ohmmeter, measure resistance between ground and terminal No. 17 (Tan/Dark Blue wire) on MHSMM harness connector. If resistance is 100 ohms or greater, replace MHSMM. If resistance is less than 100 ohms, go to next step.
2. Disconnect right seat cushion heater 4-pin connector. Measure resistance between ground and terminal "C" (Tan/Dark Blue wire) on right seat cushion heater harness connector. If resistance is 1000 ohms or greater, replace right seat cushion. If resistance is less than 1000 ohms, repair Tan/Dark Blue wire for short to ground.

RIGHT THERMISTOR OUT OF RANGE HIGH

Note. Perform MEMORY SYSTEM TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-4A after each repair.

1. Disconnect right seat cushion heater 4-pin connector. Turn ignition on. Turn right seat heater on. Using voltmeter, measure voltage between ground and terminal "D" (Black/Light Green wire) on right seat cushion heater harness connector. If voltage is greater than 5.5 volts, go to step 3. If voltage is 5.5 volts or less, go to next step.
2. Measure voltage between ground and terminal "C" (Tan/Dark Blue wire) on right seat cushion heater harness connector. If voltage is greater than.5 volts, repair (Tan/Dark Blue wire) for short to voltage. If voltage is.5 volts or less, replace right seat cushion.
3. Disconnect Memory Heated Seat/Mirror Module (MHSMM) 26-pin harness connector. MHSMM is located under front of seat. (Scheme 7) Using voltmeter, measure voltage between ground and terminal "D" (Black/Light Green wire) on right seat cushion heater harness connector. If voltage is greater than.3 volts, repair Black/Light Green wire for short to voltage. If voltage is.3 volts or less, replace MHSMM.

LEFT MIRROR HORIZONTAL SENSOR OUT OF RANGE LOW

Note. Perform MEMORY SYSTEM TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-4A after each repair.

1. Disconnect Memory Heated Seat/Mirror Module (MHSMM) 26-pin harness connector. MHSMM is located under front of seat. (Scheme 7) Using ohmmeter, measure resistance between ground and terminal No. 20 (Dark Blue/Yellow wire) on MHSMM harness connector. If resistance is.7 ohms or greater, replace MHSMM. If resistance is less than.7 ohms, go to next step.
2. Disconnect left memory mirror connector. Measure resistance between ground and terminal No. 9 (Dark Blue/Yellow wire) on left memory mirror harness connector. If resistance is less than 1000 ohms, repair Dark Blue/Yellow wire for short to ground. If resistance is 1000 ohms or greater, replace left memory mirror.

LEFT MIRROR HORIZONTAL SENSOR OUT OF RANGE HIGH

Note. Perform MEMORY SYSTEM TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-4A after each repair.

1. Disconnect Memory Heated Seat/Mirror Module (MHSMM) 26-pin harness connector. MHSMM is located under front of seat. (Scheme 7) Using voltmeter, measure voltage between ground and terminal No. 20 (Dark Blue/Yellow wire) on MHSMM harness connector. If voltage is 4.5 volts or less, replace MHSMM. If voltage is greater than 4.5 ohms, go to next step.
2. Disconnect left memory mirror connector. Measure voltage between ground and terminal No. 9 (Dark Blue/Yellow wire) on left memory mirror harness connector. If voltage is.2 volts or less, repair Dark Blue/Yellow wire for short to voltage. If voltage is greater than.2 volts, replace left memory mirror.

LEFT MIRROR VERTICAL SENSOR OUT OF RANGE LOW

Note. Perform MEMORY SYSTEM TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-4A after each repair.

1. Disconnect Memory Heated Seat/Mirror Module (MHSMM) 26-pin harness connector. MHSMM is located under front of seat. (Scheme 7) Using ohmmeter, measure resistance between ground and terminal No. 7 (Yellow/Orange wire) on MHSMM harness connector. If resistance is.7 ohms or greater, replace MHSMM. If resistance is less than.7 ohms, go to next step.
2. Disconnect left memory mirror connector. Measure resistance between ground and terminal No. 7 (Yellow/Orange wire) on left memory mirror harness connector. If resistance is less than 1000 ohms, repair Yellow/Orange wire for short to ground. If resistance is 1000 ohms or greater, replace left memory mirror.

LEFT MIRROR VERTICAL SENSOR OUT OF RANGE HIGH

Note. Perform MEMORY SYSTEM TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-4A after each repair.

1. Disconnect Memory Heated Seat/Mirror Module (MHSMM) 26-pin harness connector. MHSMM is located under front of seat. (Scheme 7) Using voltmeter, measure voltage between ground and terminal No. 7 (Yellow/Orange wire) on MHSMM harness connector. If voltage is 4.5 volts or less, replace MHSMM. If voltage is greater than 4.5 ohms, go to next step.
2. Disconnect left memory mirror connector. Measure voltage between ground and terminal No. 7 (Yellow/Orange wire) on left memory mirror harness connector. If voltage is.2 volts or less, repair Yellow/Orange wire for short to voltage. If voltage is greater than.2 volts, replace left memory mirror.

RIGHT MIRROR HORIZONTAL SENSOR OUT OF RANGE LOW

Note. Perform MEMORY SYSTEM TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-4A after each repair.

1. Disconnect Memory Heated Seat/Mirror Module (MHSMM) 26-pin harness connector. MHSMM is located under front of seat. (Scheme 7) Using ohmmeter, measure resistance between ground and terminal No. 19 (Dark Green/Red wire) on MHSMM harness connector. If resistance is.7 ohms or greater, replace MHSMM. If resistance is less than.7 ohms, go to next step.
2. Disconnect right memory mirror connector. Measure resistance between ground and terminal No. 9 (Dark Green/Red wire) on right memory mirror harness connector. If resistance is less than 1000 ohms, repair Dark Green/Red wire for short to ground. If resistance is 1000 ohms or greater, replace right memory mirror.

RIGHT MIRROR HORIZONTAL SENSOR OUT OF RANGE HIGH

Note. Perform MEMORY SYSTEM TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-4A after each repair.

1. Disconnect Memory Heated Seat/Mirror Module (MHSMM) 26-pin harness connector. MHSMM is located under front of seat. (Scheme 7) Using voltmeter, measure voltage between ground and terminal No. 19 (Dark Green/Red wire) on MHSMM harness connector. If voltage is 4.5 volts or less, replace MHSMM. If voltage is greater than 4.5 ohms, go to next step.
2. Disconnect right memory mirror connector. Measure voltage between ground and terminal No. 9 (Dark Green/Red wire) on right memory mirror harness connector. If voltage is.2 volts or less, repair Dark Green/Red wire for short to voltage. If voltage is greater than.2 volts, replace right memory mirror.

RIGHT MIRROR VERTICAL SENSOR OUT OF RANGE LOW

Note. Perform MEMORY SYSTEM TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-4A after each repair.

1. Disconnect Memory Heated Seat/Mirror Module (MHSMM) 26-pin harness connector. MHSMM is located under front of seat. (Scheme 7) Using ohmmeter, measure resistance between ground and terminal No. 6 (Yellow/Red wire) on MHSMM harness connector. If resistance is.7 ohms or greater, replace MHSMM. If resistance is less than.7 ohms, go to next step.
2. Disconnect right memory mirror connector. Measure resistance between ground and terminal No. 7 (Yellow/Red wire) on right memory mirror harness connector. If resistance is less than 1000 ohms, repair Yellow/Red wire for short to ground. If resistance is 1000 ohms or greater, replace right memory mirror.

RIGHT MIRROR VERTICAL SENSOR OUT OF RANGE HIGH

Note. Perform MEMORY SYSTEM TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-4A after each repair.

1. Disconnect Memory Heated Seat/Mirror Module (MHSMM) 26-pin harness connector. MHSMM is located under front of seat. (Scheme 7) Using voltmeter, measure voltage between ground and terminal No. 6 (Yellow/Red wire) on MHSMM harness connector. If voltage is 4.5 volts or less, replace MHSMM. If voltage is greater than 4.5 ohms, go to next step.
2. Disconnect right memory mirror connector. Measure voltage between ground and terminal No. 7 (Yellow/Red wire) on right memory mirror harness connector. If voltage is.2 volts or less, repair Yellow/Red wire for short to voltage. If voltage is greater than.2 volts, replace right memory mirror.

INOPERATIVE MEMORY SWITCH

Note. Perform MEMORY SYSTEM TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-4A after each repair.

1. Disconnect memory switch connector. Using ohmmeter, measure resistance between ground and terminal No. 3 (Black wire) on memory switch harness connector. If resistance is 5 ohms or greater, repair open ground circuit. If resistance is 5 ohms or less, go to next step.
2. Using voltmeter, measure voltage between ground and terminal No. 5 (Pink/Black wire) on memory switch harness connector. If voltage is.5 volts or less, go to step 5. If voltage is greater than.5 volts, go to next step.
3. Measure voltage between ground and terminal No. 6 (Pink/Red wire) on memory switch harness connector. If voltage is.5 volts or less, go to «MEMORY SYSTEM TEST 43B»(ref-679-S37050916992000031300000). If voltage is greater than.5 volts, go to next step.
4. Measure voltage between ground and terminal No. 4 (Pink/White wire) on memory switch harness connector. If voltage is.5 volts or less, go to «MEMORY SYSTEM TEST 43C»(ref-679-S10912556482000031300000). If voltage is greater than.5 volts, replace memory switch.
5. Disconnect Memory Heated Seat/Mirror Module (MHSMM) 26-pin harness connector. MHSMM is located under front of seat. (Scheme 7) Connect jumper wire between ground and terminal No. 5 (Pink/Black wire) on memory switch harness connector. Using ohmmeter, measure resistance between ground and terminal No. 13 (Pink/Black wire) on MHSMM harness connector. If resistance is 5 ohms or greater, repair open Pink/Black wire. If resistance is less than 5 ohms, replace MHSMM.

Note. Perform MEMORY SYSTEM TEST 43A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-4A after each repair.

Note. Ensure seat frame is connected to ground if seat is unbolted from vehicle.

Disconnect Memory Heated Seat/Mirror Module (MHSMM) 26-pin harness connector. MHSMM is located under front of seat. (Scheme 7) Connect jumper wire between ground and terminal No. 6 (Pink/Red wire) on memory switch harness connector. Using ohmmeter, measure resistance between ground and terminal No. 12 (Pink/Red wire) on MHSMM harness connector. If resistance is 5 ohms or greater, repair open Pink/Red wire. If resistance is less than 5 ohms, replace MHSMM.

Note. Perform MEMORY SYSTEM TEST 43A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-4A after each repair.

Note. Ensure seat frame is connected to ground if seat is unbolted from vehicle.

Disconnect Memory Heated Seat/Mirror Module (MHSMM) 26-pin harness connector. MHSMM is located under front of seat. (Scheme 7) Connect jumper wire between ground and terminal No. 4 (Pink/White wire) on memory switch harness connector. Using ohmmeter, measure resistance between ground and terminal No. 25 (Pink/White wire) on MHSMM harness connector. If resistance is 5 ohms or greater, repair open Pink/White wire. If resistance is less than 5 ohms, replace MHSMM.

LEFT MIRROR INOPERATIVE FROM MEMORY

Note. Perform MEMORY SYSTEM TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-4A after each repair.

Note. Ensure seat frame is connected to ground if seat is unbolted from vehicle.

1. Disconnect Memory Heated Seat/Mirror Module (MHSMM) 16-pin harness connector. MHSMM is located under front of seat. (Scheme 7) Using voltmeter, measure voltage between ground and terminal No. 4 (Black/White wire) on MHSMM harness connector. While monitoring voltmeter, press left mirror switch to left position. If voltage is 10 volts or less when switch is pressed, repair open Black/White wire. If voltage is greater than 10 volts when switch is pressed, go to next step.
2. Measure voltage between ground and terminal No. 5 (Yellow wire) on MHSMM harness connector. While monitoring voltmeter, press left mirror switch to up position. If voltage is 10 volts or less when switch is pressed, repair open Yellow wire. If voltage is greater than 10 volts when switch is pressed, go to next step.
3. Measure voltage between ground and terminal No. 3 (Yellow/Pink wire) on MHSMM harness connector. While monitoring voltmeter, press left mirror switch to down position. If voltage is 10 volts or less when switch is pressed, repair open Yellow/Pink wire. If voltage is greater than 10 volts when switch is pressed, repair MHSMM.

RIGHT MIRROR INOPERATIVE FROM MEMORY

Note. Perform MEMORY SYSTEM TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-4A after each repair.

Note. Ensure seat frame is connected to ground if seat is unbolted from vehicle.

1. Disconnect Memory Heated Seat/Mirror Module (MHSMM) 16-pin harness connector. MHSMM is located under front of seat. (Scheme 7) Using voltmeter, measure voltage between ground and terminal No. 12 (Dark Blue wire) on MHSMM harness connector. While monitoring voltmeter, press right mirror switch to left position. If voltage is 10 volts or less when switch is pressed, repair open Dark Blue wire. If voltage is greater than 10 volts when switch is pressed, go to next step.
2. Measure voltage between ground and terminal No. 13 (Yellow/Black wire) on MHSMM harness connector. While monitoring voltmeter, press right mirror switch to up position. If voltage is 10 volts or less when switch is pressed, repair open Yellow/Black wire. If voltage is greater than 10 volts when switch is pressed, go to next step.
3. Measure voltage between ground and terminal No. 11 (White wire) on MHSMM harness connector. While monitoring voltmeter, press right mirror switch to down position. If voltage is 10 volts or less when switch is pressed, repair open White wire. If voltage is greater than 10 volts when switch is pressed, repair MHSMM.

IDENTIFYING OVERHEAD TRAVEL INFORMATION SYSTEM (OTIS) MALFUNCTIONS

Note. Perform SYSTEM ID TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION. Perform VERIFICATION TEST: VER-2A after each repair.

1. Using scan tool, select BODY, then OTIS. If scan tool displays NO RESPONSE, go to TEST 8A in appropriate VEHICLE COMMUNICATIONS article. If any other communication problem exists, go to TEST 1A in appropriate VEHICLE COMMUNICATIONS article. If no communication problem exists, go to next step.
2. Select AUTO SELF TEST and observe OTIS screen. If any OTIS segments fail to illuminate, replace OTIS module. If OTIS screen displays FAIL, replace OTIS module. If OTIS screen does not show any communication, replace Body Control Module (BCM).
3. Diagnosis of OTIS system is separated into 9 faults. Identify fault(s) listed in OTIS SYSTEM DIAGNOSTIC TEST DIRECTORY table and perform indicated test(s) and perform indicated test(s).
4. If OTIS fails to respond to instrument cluster dimming, replace OTIS module. Calibrate compass if inoperative or wrong. See owner's manual. If compass goes blank, replace OTIS module.

OTIS SYSTEM DIAGNOSTIC TEST DIRECTORY

OTIS DISPLAYING "SC" Or "OC"

Note. Perform OTIS TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-2A after each repair. Drive vehicle at least 3 miles (greater than 25 MPH) to update OTIS and perform VERIFICATION TEST: VER-2A after each repair.

1. Using scan tool, select BODY CONTROLLER SENSORS. Read AMBIENT TEMPERATURE voltage. If scan tool displays AMBIENT TEMP. VOLTAGE (BELOW) or.5 VOLTS, go to next step. If scan tool does not display AMBIENT TEMP. VOLTAGE (BELOW) or.5 VOLTS, go to step 4.
2. Disconnect ambient temperature sensor connector. Sensor is located behind front bumper (right center). Read AMBIENT TEMPERATURE voltage. If voltage displayed increased to 5 volts (approximately), replace ambient temperature sensor. If voltage displayed did not increase to 5 volts (approximately), go to next step.
3. Turn ignition off. Disconnect Body Control Module (BCM) Bone 12-pin connector C3. BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1) Using external ohmmeter, measure resistance between ground and terminal No. 5 (Violet/Light Green wire) on Bone harness connector. If resistance is less than 300 ohms, repair Violet/Light Green wire for short to ground. If resistance is 300 ohms or greater, replace BCM.
4. Disconnect ambient temperature sensor connector. Sensor is located behind front bumper (right center). Read AMBIENT TEMPERATURE voltage. If voltage displayed is 5 volts (approximately), go to next step. If voltage displayed is not 5 volts (approximately), go to «OTIS TEST 3A»(ref-679-S32545015432000031300000).
5. Connect jumper wire between ambient temperature sensor harness connector terminals. Read AMBIENT TEMPERATURE voltage. If voltage displayed is 0 volts (approximately), replace ambient temperature sensor. If voltage displayed is not 0 volts (approximately), go to next step.
6. Remove jumper wire. Connect jumper wire between ground and terminal No. 2 (Violet/Light Green wire) on ambient temperature sensor harness connector. Read AMBIENT TEMPERATURE voltage. If voltage displayed is 0 volts (approximately), go to step 8. If voltage displayed is not 0 volts (approximately), go to next step.
7. With jumper wire connected, turn ignition off. Disconnect Body Control Module (BCM) Bone 12-pin connector C3. BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1)
8. Disconnect jumper wire. Connect jumper wire between ground and terminal No. 1 (Dark Blue/Gray wire) on ambient temperature sensor harness connector. Using external ohmmeter, measure resistance between ground and terminal No. 10 (Dark Blue/Gray wire) on Bone harness connector. If resistance is less than 5 ohms, replace BCM. If resistance is 5 ohms or greater, repair open Dark Blue/Gray wire.

INCORRECT AMBIENT TEMPERATURE READING

Note. Perform OTIS TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-2A after each repair. Drive vehicle at least 3 miles (greater than 25 MPH) to update OTIS and perform VERIFICATION TEST: VER-2A after each repair.

1. Disconnect and remove ambient temperature sensor. Sensor is located behind front bumper, right of center. Using external ohmmeter, measure resistance between sensor terminals and compare with «AMBIENT TEMPERATURE SENSOR SPECIFICATIONS»(ref-679-S25851633552000031300000) table. Go to next step. AMBIENT TEMPERATURE SENSOR SPECIFICATIONS Ambient Temperature k/ohms 32°F (0°C) 29.3-36.0 50°F (10°C) 18.0-22.0 68°F (20°C) 11.4-13.6 77°F (25°C) 9.1-10.8 86°F (30°C) 7.4-8.7 104°F (40°C) 4.9-5.7 122°F (50°C) 3.3-3.8
2. If resistance measurement does not correspond with «AMBIENT TEMPERATURE SENSOR SPECIFICATIONS»(ref-679-S25851633552000031300000) table, replace sensor. If sensor is within specification, turn ignition off. Close all vehicle doors and ensure all lights are off. Wait one minute.
3. Using external ohmmeter, measure resistance between ground and terminal No. 1 (Dark Blue/Gray wire) on ambient temperature sensor harness connector. If resistance is less than 30 ohms, go to «OTIS TEST 3B»(ref-679-S28977103852000031300000). If resistance is 30 ohms or greater, go to next step.
4. Connect jumper wire between ground and terminal No. 1 (Dark Blue/Gray wire) on sensor connector. Disconnect Body Control Module (BCM) Bone 12-pin connector C3. BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1)
5. Using external ohmmeter, measure resistance between ground and terminal No. 10 (Dark Blue/Gray wire) on Bone harness connector. If resistance is less than 5 ohms, replace BCM. If resistance is 5 ohms or greater, repair open Dark Blue/Gray wire.

Note. Perform OTIS TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-2A after each repair. Drive vehicle at least 3 miles (greater than 25 MPH) to update OTIS and perform VERIFICATION TEST: VER-2A after each repair.

1. Disconnect Body Control Module (BCM) Bone 12-pin connector C3. BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1)
2. Measure resistance between ground and terminal No. 5 (Violet/Dark Green wire) on Bone connector. If resistance is less than 50 k/ohms, repair Violet/Dark Green wire for partial short to ground. If resistance is 50 k/ohms or greater, go to next step.
3. Measure resistance between terminals No. 5 and 10 on Bone connector. If resistance is less than 50 k/ohms, repair Violet/Dark Green wire for partial short to Dark Blue/Gray wire. If resistance is 50 k/ohms or greater, replace BCM.

OTIS MILEAGE AND DISTANCE FUNCTION MALFUNCTION

Note. Perform OTIS TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-2A after each repair. Drive vehicle at least 3 miles (greater than 25 MPH) to update OTIS and perform VERIFICATION TEST: VER-2A after each repair.

1. If all other OTIS functions operating properly, go to next step. If any other OTIS functions are not working, replace OTIS unit.
2. Using scan tool, select engine controller. Read PCM DTCs. If any DTCs exist, go to appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE. If no DTCs exist, check for correct tire size.

REPAIRING OTIS SWITCHES

Note. Perform OTIS TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-2A after each repair. Drive vehicle at least 3 miles (greater than 25 MPH) to update OTIS and perform VERIFICATION TEST: VER-2A after each repair.

1. Turn ignition off and leave key in ignition. Open driver's door. If chime sounds, go to next step. If chime does not sound, go to «CHIME TEST 5A»(ref-679-S14266779322000031300000) .
2. Turn ignition on and close driver's door. Press each button on OTIS unit and listen for audible beep at Body Control Module (BCM). If beep was heard each time a button is pressed, OTIS is currently operating correctly. If beep was not heard each time a button was pressed, replace OTIS unit.

IDENTIFYING POWER DOOR LOCK PROBLEMS

Note. Perform SYMPTOM ID TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-2A after each repair.

Using scan tool, read body DTCs. If any power door lock DTCs are present, see POWER DOOR LOCK FAULT MESSAGE DIRECTORY table. If no DTCs are present, see POWER DOOR LOCK SYMPTOM TEST DIRECTORY table.

POWER DOOR LOCK MESSAGE DIRECTORY

POWER DOOR LOCK SYMPTOM TEST DIRECTORY

ALL DOORS FAIL TO LOCK/UNLOCK FROM ANY SWITCH

Note. Perform POWER DOOR LOCK TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-2A after each repair.

1. Using scan tool, actuate door lock relay. If all doors lock, go to next step. If all doors do not lock, go to «POWER DOOR LOCK TEST 2B»(ref-679-S34195300752000031300000).
2. Using scan tool, read door lock switch voltage. If scan tool displays voltage greater than.2 volts, go to «POWER DOOR LOCK TEST 2C»(ref-679-S32111261862000031300000). If scan tool displays voltage of.2 volts or less, go to next step.
3. Using scan tool, read door lock switch voltage. Press door lock switch to LOCK position. If scan tool displays voltage greater than 1.7 volts, replace Body Control Module (BCM). BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1)
4. Remove right front door trim panel. Disconnect door lock switch connector. Using external voltmeter, measure voltage between ground and terminal No. 1 (Pink wire) on door lock harness connector. If voltage is 10 volts or less, repair open Pink wire. If voltage is greater than 10 volts, go to next step.
5. Measure voltage between ground and terminal No. 4 (White/Light Green wire) on door lock harness connector. If voltage is.3 volts or less, go to next step. If voltage is greater than.3 volts, repair White/Light Green wire for short to voltage.
6. Turn ignition off. Using external ohmmeter, measure resistance between ground and terminal No. 4 (White/Light Green wire) on door lock harness connector. If resistance is less than 100 ohms, repair White/Light Green wire for short to ground. If resistance is 100 ohms or greater, go to next step.
7. Connect jumper wire between terminals No. 1 and 4 on door lock harness connector. Using scan tool, read door lock switch voltage. If voltage is greater than 1.7 volts with door lock switch pressed, replace front door lock switches. If voltage is 1.7 volts or less with door lock switch pressed, go to next step.
8. Do not disconnect jumper wire. Disconnect BCM Blue 16-pin connector C4. Using external voltmeter, measure voltage between ground and terminal No. 12 (White/Light Green wire) on Blue connector. If voltage is 10 volts or less, repair open White/Light Green wire. If voltage is greater than 10 volts, replace BCM.

Note. Perform POWER DOOR LOCK TEST 2A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-2A after each repair.

1. Using scan tool, read door lock switch voltage. If scan tool displays voltage greater than.2 volts, go to «POWER DOOR LOCK TEST 2C»(ref-679-S32111261862000031300000). If scan tool displays voltage of.2 volts or less, go to next step.
2. Remove door unlock and lock relays from junction block. (Scheme 3) Junction block is located behind left end cap of instrument panel. (Scheme 1) Using external voltmeter, measure voltage between ground and terminal "D" (fused B+) on door lock relay socket. If voltage is 10 volts or less, repair open fused B+ circuit between Power Distribution Center (PDC) and lock relay. If voltage is more than 10 volts, go to next step.
3. Measure voltage between ground and terminal "C" (fused B+) on door lock relay socket. If voltage is 10 volts or less, repair open fused B+ circuit between PDC and lock relay. If voltage is more than 10 volts, go to next step.
4. Turn ignition off and ensure all lights are off. Using external ohmmeter, measure resistance between ground and terminal "E" (ground) on lock relay socket. If resistance is less than 10 ohms, go to next step. If resistance is 10 ohms or greater, repair open ground circuit.
5. Turn ignition off and ensure all lights are off. Using external ohmmeter, measure resistance between ground and terminal "E" (ground) on unlock relay socket. If resistance is less than 10 ohms, go to next step. If resistance is 10 ohms or greater, repair open ground circuit.
6. Using external ohmmeter, measure resistance between terminals "B" and "E" on lock relay. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or greater, replace relay.
7. Using external ohmmeter, measure resistance between terminals "B" and "E" on unlock relay. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or greater, replace relay.
8. Using external ohmmeter, measure resistance between terminals "A" and "C" on unlock relay. If resistance is 65-90 ohms, go to next step. If resistance is not 65-90 ohms, replace relay.
9. Using external ohmmeter, measure resistance between ground terminal "B" (lock relay output circuit) on lock relay socket. If resistance is less than 20 ohms, repair lock relay output circuit for short to ground. If resistance is 20 ohms or greater, go to next step.
10. Measure resistance between ground terminal "B" (unlock relay output circuit) on unlock relay socket. If resistance is less than 20 ohms, repair unlock relay output circuit for short to ground. If resistance is 20 ohms or greater, go to next step.
11. Install unlock relay in junction block. Measure resistance between ground terminal "B" (lock relay output circuit) on lock relay socket. If resistance is less than 10 ohms, go to next step. If resistance is 10 ohms or greater, repair open lock or unlock relay output circuit.
12. Connect test light between terminals "A" and "C" on lock relay socket. Using scan tool, actuate door lock relay. If test light flashes during actuation, replace relay. If test light does not flash during actuation, go to next step.
13. Stop actuation. Remove Body Control Module (BCM). BCM is mounted to junction block. Inspect junction block 20-pin internal connector. Repair as needed. If connector is okay, replace BCM.

Note. Perform POWER DOOR LOCK TEST 2A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-2A after each repair.

1. Remove driver's door trim panel. See appropriate POWER WINDOWS article. Disconnect door lock switch connector. Using scan tool, read door lock switch voltage. If scan tool displays voltage greater than .2 volts, go to next step. If scan tool displays voltage than .2 volts or less, replace driver's door lock switch.
2. Remove right front door trim panel. Disconnect door lock switch connector. Using scan tool, read door lock switch voltage. If scan tool displays voltage greater than .2 volts, go to next step. If scan tool displays voltage than .2 volts or less, replace right front door lock switch.
3. Turn ignition off. Disconnect Body Control Module (BCM) Blue 16-pin connector C4. Using external voltmeter, measure voltage between ground and terminal No. 5 (White/Dark Green wire) on Blue connector. If voltage is .2 volts or less, go to next step. If voltage is more than .2 volts, repair White/Dark Green wire for short to voltage.
4. Measure voltage between ground and terminal No. 12 (White/Light Green wire) on Blue connector. If voltage is .2 volts or less, replace BCM. If voltage is more than .2 volts, repair White/Light Green wire for short to voltage.

ONE DOOR FAILS TO LOCK/UNLOCK FROM ANY SWITCH

Note. Perform POWER DOOR LOCK TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-2A after each repair.

1. If problem is with driver's door, go to step 4. If problem is not with driver's door, remove key from ignition switch. Remove appropriate door trim panel. Disconnect door lock motor connector.
2. Using external voltmeter, measure voltage between ground and terminal No. 4 (Orange wire) on door lock motor harness connector. Press door lock switch to LOCK position. If voltage is 10 volts or less, repair open Orange wire. If voltage is more than 10 volts, go to next step.
3. Measure voltage between ground and terminal No. 3 (Pink/Black wire) on door lock motor harness connector. Press door lock switch to UNLOCK position. If voltage is 10 volts or less, repair open Pink/Black wire. If voltage is more than 10 volts, replace door lock motor.
4. Remove driver's door unlock relay from junction block. (Scheme 3) Junction block is located behind left end cap of instrument panel. (Scheme 1) Connect jumper wire between terminals "B" and "E" on driver's unlock relay socket. Unlock driver's door. Press door lock switch to LOCK position. If driver's door locks, replace driver's door unlock relay. If driver's door does not lock, go to next step.
5. Do not disconnect jumper wire. Remove driver's door trim panel. See appropriate POWER WINDOWS article. Disconnect door lock motor connector. Using external ohmmeter, measure resistance between ground and terminal No. 3 (Dark Blue wire) on motor harness connector. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or greater, repair open Dark Blue wire.
6. Using external voltmeter, measure voltage between ground and terminal No. 4 (Orange wire) on door lock motor harness connector. Press door lock switch to LOCK position. If voltage is 10 volts or less, repair open Orange wire. If voltage is more than 10 volts, replace door lock motor.

ALL DOORS FAIL TO LOCK/UNLOCK FROM ONE SWITCH

Note. Perform POWER DOOR LOCK TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-2A after each repair.

1. If problem is with door key cylinder switch on vehicle equipped with Vehicle Theft Security System (VTSS), go to step 4. Remove appropriate door trim panel. See appropriate POWER WINDOWS article. Disconnect door lock switch connector. Using external voltmeter, measure voltage between ground and terminal No. 1 (Pink wire) on harness connector. If voltage is 10 volts or less, repair open Pink wire. If voltage is more than 10 volts, go to next step.
2. Connect jumper wire between terminals No. 1 and 4 (White/Dark or Light Green wire) on door lock switch harness connector. Using scan tool, read door lock switch voltage. If voltage is 8 volts or less, go to next step. If voltage is more than 8 volts, replace door lock switch.
3. Disconnect Body Control Module (BCM) Blue 16-pin connector C4. BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1)
4. Remove appropriate door trim panel. See appropriate POWER WINDOWS article. Disconnect door key cylinder switch connector. Using external voltmeter, measure voltage between ground and terminal No. 2 (Pink wire) on harness connector. If voltage is 10 volts or less, repair open Pink wire. If voltage is more than 10 volts, go to next step.
5. Connect jumper wire between door key cylinder switch harness connector terminals. Using scan tool, read appropriate door arm/disarm switch voltage. If voltage is 8 volts or less, go to next step. If voltage is more than 8 volts, replace door key cylinder switch.
6. With jumper wire still connected, disconnect Body Control Module (BCM) Blue 16-pin connector C4. BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1) Using voltmeter, measure voltage between ground and terminal No. 3 (Dark Green/Orange wire) or No. 13 (Light Green/Orange wire) on Blue BCM harness connector. If voltage is 10 volts or less, repair open Dark Green/Orange wire or Light Green/Orange wire. If voltage is greater than 10 volts, replace BCM.

ALL DOORS FAIL TO LOCK FROM ANY SWITCH

Note. Perform POWER DOOR LOCK TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-2A after each repair.

1. Using scan tool, monitor door lock switch voltage. If voltage is.2 volts or less, go to next step. If voltage is more than.2 volts, go to «POWER DOOR LOCK TEST 2C»(ref-679-S32111261862000031300000).
2. Remove door lock relay from junction block. (Scheme 3) Junction block is located behind left end cap of instrument panel. (Scheme 1) Using external voltmeter, measure voltage between ground and terminals "D" and "C" (individually) on lock relay socket. If voltage is 10 volts or less, replace junction block. If voltage is more than 10 volts, go to next step.
3. Remove unlock relay. Using external ohmmeter, measure resistance between ground and terminal "B"on lock relay socket. If resistance is less than 50 ohms, repair unlock relay output circuit (terminal "B", unlock relay socket) for short to ground. If resistance is 50 ohms or greater, go to next step.
4. Connect test light between terminals "A" and "C" on lock relay socket. Using scan tool, actuate door lock relay. If test light flashes during actuation, go to next step. If test light does not flash, replace Body Control Module (BCM). BCM is mounted to junction block.
5. Stop actuation. Using external ohmmeter, measure resistance between ground and terminal "E" on unlock relay socket. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or greater, replace junction block.
6. Using external ohmmeter, measure resistance between terminals "B" and "E" on unlock relay. If resistance is less than 5 ohms, replace lock relay. If resistance is 5 ohms or greater, replace unlock relay.

DRIVER'S DOOR FAILS TO LOCK FROM ANY SWITCH

Note. Perform POWER DOOR LOCK TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-2A after each repair.

Remove driver's door unlock relay from junction block. (Scheme 3) Junction block is located behind left end cap of instrument panel. (Scheme 1) Using external ohmmeter, measure resistance between ground and terminal "E" on relay socket. If resistance is less than 5 ohms, replace junction block. If resistance is 5 ohms or greater, replace driver's door unlock relay.

ALL DOORS FAIL TO UNLOCK FROM ANY SWITCH

Note. Perform POWER DOOR LOCK TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-2A after each repair.

1. Remove door unlock relay from junction block. (Scheme 3) Junction block is located behind left end cap of instrument panel.
2. Connect test light between terminals "A" and "C" on unlock relay socket. Using scan tool, actuate door unlock relay. If test light flashes during actuation, go to next step. If test light does not flash, go to step 5.
3. Stop actuation. Remove lock relay from junction block. Using external ohmmeter, measure resistance between ground and terminal "E" on relay socket. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or greater, replace junction block.
4. Using external ohmmeter, measure resistance between terminals "B" and "E" on lock relay. If resistance is less than 5 ohms, replace unlock relay. If resistance is 5 ohms or greater, replace lock relay.
5. Using external voltmeter, measure voltage between ground and terminal "C" on unlock relay socket. If voltage is 10 volts or less, replace junction block. If voltage is greater than 10 volts, go to next step.
6. Remove Body Control Module (BCM) from junction block. Inspect junction block 20-pin internal connector. Repair as needed. If connector is okay, replace BCM.

DRIVER'S DOOR FAILS TO UNLOCK FROM ANY SWITCH

Note. Perform POWER DOOR LOCK TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-2A after each repair.

1. Remove driver's door unlock relay from junction block. (Scheme 3) Junction block is located behind left end cap of instrument panel.
2. Using external voltmeter, measure voltage between ground and terminal "C" on relay socket. If voltage is 10 volts or less, replace junction block. If voltage is greater than 10 volts, go to next step.
3. Connect test light between terminals "A" and "C" on driver's unlock relay socket. Using scan tool, actuate driver's door unlock relay. If test light flashes during actuation, replace driver's door unlock relay. If test light does not flash, go to next step.
4. Stop actuation. Remove Body Control Module (BCM) from junction block. Inspect junction block 20-pin internal connector. Repair or replace junction block as needed. If connector is okay, replace BCM.

DOOR LOCK INHIBIT MALFUNCTION

Note. Perform POWER DOOR LOCK TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-2A after each repair.

1. Open driver's door. Using scan tool, read driver's door ajar status. If scan tool displays LF DOOR AJAR: CLOSED, go to next step. If scan tool does not display LF DOOR AJAR: CLOSED, go to «DOOR AJAR TEST 2A»(ref-679-S11083257642000031300000).
2. Ensure key is in ignition switch. Using scan tool, read key-in ignition status. If scan tool displays KEY-IN IGN: CLOSED, replace Body Control Module (BCM). BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1) If scan tool does not display KEY-IN IGN: CLOSED, go to next step.
3. Disconnect ignition switch connector. (Scheme 2) Using external ohmmeter, measure resistance between ground and terminal No. 3 (Black/Light Green wire) on ignition switch harness connector. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or greater, repair open Black/Light Green wire.
4. Connect jumper wire between terminals No. 2 (Light Blue wire) and 3 on ignition switch harness connector. Using scan tool, read key-in ignition status. If scan tool displays KEY-IN IGN: CLOSED, replace ignition switch. If scan tool does not display KEY-IN IGN: CLOSED, go to next step.
5. Do not disconnect jumper wire. Disconnect BCM Black 24-pin connector C2. Using external ohmmeter, measure resistance between ground and terminal No. 24 (Light Blue wire) on Black connector. If resistance is less than 5 ohms, replace BCM. If resistance is 5 ohms or greater, repair open Light Blue wire.

AUTOMATIC ROLLING DOOR LOCK MALFUNCTION

Note. Perform POWER DOOR LOCK TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-2A after each repair.

1. Using scan tool, select MISCELLANEOUS. Read auto door lock status. If scan tool displays AUTO DOOR LOCKS: ENABLED, go to next step. If scan tool does not display AUTO DOOR LOCKS: ENABLED, enable auto door locks.
2. Ensure all doors are closed. Using scan tool, read driver's door ajar status. If scan tool displays LF DOOR AJAR: CLOSED, perform «DOOR AJAR TEST 3A»(ref-679-S25153510042000031300000). If scan tool does not display LF DOOR AJAR: CLOSED, go to next step.
3. Using scan tool, read door ajar switch status for remaining doors. If scan tool displays DOOR AJAR: CLOSED for any door, go to DOOR AJAR TEST 1A. If scan tool does not display DOOR AJAR: CLOSED for any door, go to next step.
4. Turn ignition on. Using scan tool, select MONITORS. Read PCI bus engine information. Monitor scan tool while depressing accelerator. If TP sensor status does not change, go to appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE. If TP sensor status does change, go to next step.
5. Raise and support vehicle. Ensure traction control is turned off (if equipped). Close all doors. Start engine and place shift lever in Drive position. Using scan tool, read PCI bus engine info. Monitor Vehicle Speed Sensor (VSS) while wheels are rotating.
6. If MPH does not increase while accelerator is depressed, go to appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE. If MPH increases while accelerator is depressed, determine if doors lock. If doors lock, system is currently operating correctly. If doors do not lock, replace Body Control Module (BCM). BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1)

REMOTE KEYLESS ENTRY (RKE) MALFUNCTION

Note. Perform POWER DOOR LOCK TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-2A after each repair.

To test transmitter, obtain known good transmitter. Using scan tool, select BODY, then BODY COMPUTER. Select MISCELLANEOUS, then RKE FOB test. Press lock or unlock button on transmitter. If RKE responds correctly, replace and program new transmitter. If RKE is inoperative or does not operate correctly, replace RKE module and program all transmitters. To program transmitter, go to POWER DOOR LOCK TEST 11B . If horn chirp is inoperative, go to POWER DOOR LOCK TEST 11C . To cancel horn chirp or change decklid to single button operation, see vehicle owner's manual.

RKE TRANSMITTER PROGRAMMING

Note. Perform POWER DOOR LOCK TEST 11A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-2A after each repair.

Ensure transmitter batteries are approximately 3.2 volts. Turn ignition on. Ensure shift lever is in Park position. Using scan tool, select MISCELLANEOUS, then PROGRAM RKE. Chime will sound. Press any button on transmitter. Chime will sound. Press any button on next transmitter. Chime will sound. Repeat procedure for additional transmitters. Exit PROGRAM RKE and turn ignition off. Chime will sound.

INOPERATIVE HORN CHIRP

Note. Perform POWER DOOR LOCK TEST 11A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-2A after each repair.

1. Ensure horn operates correctly. Repair as needed. Using scan tool, select BODY COMPUTER, then MISCELLANEOUS. Ensure horn chirp is ENABLED. Using scan tool, actuate horn relay. If horn sounds during actuation, replace Body Control Module (BCM). BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1) If horn does not sound, go to next step.
2. Remove BCM from junction block. Inspect junction block internal 20-pin connector. Repair as needed. If connector is okay, go to next step.
3. Connect (momentarily) jumper wire between ground and terminal No. 18 (horn relay control) on junction block internal 20-pin connector. If horn sounds, replace BCM. If horn does not sound, replace junction block.

INOPERATIVE DECKLID RELEASE

Note. Perform POWER DOOR LOCK TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-2A after each repair.

1. Ensure no decklid release switch or decklid motor DTCs are present. Disconnect decklid release solenoid connector. Using external ohmmeter, measure resistance between ground and terminal No. 1 (Black wire) on solenoid harness connector. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or greater, repair open Black wire.
2. Connect test light between terminals No. 1 and 3 (Black/White wire) on solenoid harness connector. Press decklid release switch. If test light illuminates when switch is pressed, replace decklid release motor. If test light does not illuminate, go to next step.
3. Do not disconnect test light. Disconnect decklid release switch. Using external voltmeter, measure voltage between ground and terminal No. 2 (Pink wire) on switch harness connector. If voltage is 10 volts or less, repair open Pink wire. If voltage is greater than 10 volts, go to next step.
4. Connect jumper wire between decklid release switch terminals. If test light illuminates, replace decklid release switch. If test light does not illuminate, go to next step.
5. Do not disconnect jumper wire. Disconnect Body Control Module (BCM) Gray 14-pin connector C1. BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1) Using external voltmeter, measure voltage between ground and terminal No. 1 (Black/White wire) on Gray harness connector. If voltage is 10 volts or less, repair open Black/White wire. If voltage is greater than 10 volts, go to next step.
6. Disconnect jumper wire and test light. Connect jumper wire between terminals No. 1 and 3 on decklid release solenoid harness connector. Turn ignition off. Remove BCM from junction block. Connect test light between terminals No. 7 and 8 on junction block 20-pin internal connector. If test light illuminates, replace BCM. If test light does not illuminate, repair open Black/White wire (decklid release circuit) between decklid release solenoid and junction block.

LEFT CENTRAL LOCK/UNLOCK SWITCH FAILURE

Note. Perform POWER DOOR LOCK TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-2A after each repair.

1. Using scan tool, erase DTC. Using scan tool, select BODY, then BODY COMPUTER. Select SENSORS and monitor driver's door arm/disarm switch. Insert key into driver's door lock and rotate switch from lock to unlock position. If lock or switch binds in either position, repair as needed. If lock or switch does not bind, go to next step.
2. Continue to slowly turn door lock and monitor scan tool voltage. If voltage displayed changes from zero to 2.4 volts to zero, system is currently operating correctly. If voltage displayed does not change from zero to 2.4 volts to zero, go to next step.
3. Remove driver's door trim panel. See appropriate POWER WINDOWS article. See appropriate POWER WINDOWS article. Disconnect door key cylinder switch. Using scan tool, read driver's door arm/disarm switch voltage. If scan tool displays zero volts, replace door key cylinder switch. If scan tool does not display zero volts, go to next step.
4. Disconnect Body Control Module (BCM) Gray 14-pin connector C1. BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1) Using external voltmeter, measure voltage between ground and terminal No. 1 (Light Green/Orange wire) on driver's door key cylinder switch harness connector. If voltage is.1 volt or less, replace BCM. If voltage is greater than.1 volt, repair Light Green/Orange wire for short to voltage.

Note. Perform POWER DOOR LOCK TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-2A after each repair.

1. Using scan tool, erase DTCs. Using scan tool, select BODY, then BODY COMPUTER. Select SENSORS and monitor right door arm/disarm switch. Insert key into right door lock and rotate switch from lock to unlock position. If lock or switch binds in either position, repair as needed. If lock or switch does not bind, go to next step.
2. Continue to slowly turn door lock and monitor scan tool voltage. If voltage displayed changes from zero to 3 volts to zero, system is currently operating correctly. If voltage displayed does not change from zero to 3 volts to zero, go to next step.
3. Remove right door trim panel. See appropriate POWER WINDOWS article. See appropriate POWER WINDOWS article. Disconnect door key cylinder switch. Using scan tool, read right door arm/disarm switch voltage. If scan tool displays zero volts, replace door key cylinder switch. If scan tool does not display zero volts, go to next step.
4. Disconnect Body Control Module (BCM) Gray 14-pin connector C1. BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1) Using external voltmeter, measure voltage between ground and terminal No. 1 (Dark Green/Orange wire) on right door key cylinder switch harness connector. If voltage is.1 volt or less, replace BCM. If voltage is greater than.1 volt, repair Dark Green/Orange wire for short to voltage.

RKE UNABLE TO ENTER PROGRAM MODE

Note. Perform POWER DOOR LOCK TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-2A after each repair.

DTC is set when there is lack of response from RKE module when attempting to enter program mode. Possible causes are failed RKE module and failed Body Control Module (BCM). BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1)

RKE PROGRAM MODE ENTERED WITHOUT PROGRAM REQUEST

Note. Perform POWER DOOR LOCK TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-2A after each repair.

DTC is set when Body Control Module (BCM) determines that RKE module without BCM request. Possible causes are failed RKE module and failed Body Control Module (BCM). BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1)

DECKLID RELEASE SWITCH FAILURE

Note. Perform POWER DOOR LOCK TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-2A after each repair.

1. Disconnect decklid release switch connector. Using scan tool, erase DTCs. Cycle ignition switch off, then on. Wait 30 seconds. Using scan tool, read DTC's. If decklid release switch failure DTC reset, go to next step. If decklid release switch failure DTC is not reset, replace decklid release switch.
2. Disconnect Body Control Module (BCM) Gray 14-pin connector C1. BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1) Using external voltmeter, measure voltage between ground and terminal No. 1 (Black/White wire) on decklid release switch harness connection. If voltage is.5 volts or less, replace BCM. If voltage is greater than.5 volts, repair Black/White wire for short to voltage.

DECKLID RELEASE MOTOR OUTPUT FAILURE

Note. Perform POWER DOOR LOCK TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-2A after each repair.

1. Disconnect decklid release motor connector. Using scan tool, erase DTCs. Cycle ignition switch off, then on. Using scan tool, read DTC's. Wait 30 seconds. While monitoring scan tool, press and hold decklid release switch for 30 seconds. If decklid release motor output DTC reset, go to next step. If decklid release motor output DTC is not reset, replace decklid release motor.
2. Remove Body Control Module (BCM) from junction block. BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1)

IDENTIFYING SENTRY KEY IMMOBILIZER SYSTEM (SKIS) PROBLEMS

1. Ensure battery is fully charged. Using scan tool, select THEFT ALARM, then SKIM. If scan tool displays NO RESPONSE, go to TEST 16A in appropriate VEHICLE COMMUNICATIONS article.
2. Using scan tool, read and record SKIM DTCs (fault messages). Erase SKIM DTCs. Cycle ignition switch to OFF, then RUN/START position. Leave ignition in RUN/START position for 3 minutes. Read SKIM DTCs to verify that codes displayed are current faults. See «SKIS DIAGNOSTIC TEST DIRECTORY»(ref-679-S36656682412000031300000) table. If no codes (fault messages) are present, go to «PRE-EXISTING FAULT MESSAGE TEST DIRECTORY»(ref-679-S20328730162000031300000) table. SKIS DIAGNOSTIC TEST DIRECTORY Fault Message Perform Antenna Failure (1) EEPROM Failure (1) Transponder communication Failure «TEST 2A»(ref-679-S16776237942000031300000) Transponder Cyclic Redundancy Check (CRC) Failure «TEST 2A»(ref-679-S16776237942000031300000) Transponder ID Mismatched «TEST 3A»(ref-679-S30217343142000031300000) Transponder ID Mismatched & EEPROM Failure (1) Transponder Response Mismatch «TEST 3A»(ref-679-S30217343142000031300000) Transponder Response Mismatch & EEPROM Failure (1) VIN Mismatch «TEST 4A»(ref-679-S41525963242000031300000) VIN Mismatch & PCM Has An EEPROM DTC Stored In Memory (2) VIN Mismatch & Roll Code Failure With Or Without An EEPROM Failure «TEST 4A»(ref-679-S41525963242000031300000) Internal SKIM Failure (1) Serial Link External Failure (3) «TEST 9A»(ref-679-S40745864982000031300000) Serial Link External Failure «TEST 10A»(ref-679-S31019363292000031300000) Serial Link Internal Failure (1) PCM Status Failure (4) «TEST 10A»(ref-679-S31019363292000031300000) Rolling Code Failure (5) «TEST 10A»(ref-679-S31019363292000031300000) (1) Replace SKIM and perform «SKIM INITIALIZATION PROCEDURE»(ref-679-S00711857402000031300000) . (2) See appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE. After repair, go to «SKIS TEST 4A»(ref-679-S35544568522000031300000) . (3) When attempting to send secret key to PCM. (4) Fault maturity time is approximately 20 seconds. (5) Fault maturity time is approximately 4 seconds. PRE-EXISTING FAULT MESSAGE TEST DIRECTORY Problem Perform Antenna Failure (1) VIN Mismatch & EEPROM Failure «TEST 5A»(ref-679-S05432338522000031300000) EEPROM Failure «TEST 6A»(ref-679-S13681149872000031300000) Internal SKIM Failure «TEST 7A»(ref-679-S22550465152000031300000) Serial Link External Failure «TEST 8A»(ref-679-S06249353862000031300000) Serial Link Internal Failure (1) PCM Status Failure «TEST 8A»(ref-679-S06249353862000031300000) Rolling Code Failure «TEST 8A»(ref-679-S06249353862000031300000) Transponder ID Mismatched & EEPROM Failure «TEST 11A»(ref-679-S18623556012000031300000) Transponder Response Mismatch & EEPROM failure «TEST 11A»(ref-679-S18623556012000031300000) Transponder ID Mismatched «TEST 12A»(ref-679-S34283059762000031300000) Transponder Response Mismatch «TEST 12A»(ref-679-S34283059762000031300000) Transponder Communication Failure «TEST 12A»(ref-679-S34283059762000031300000) Transponder Cyclic Redundancy Check (CRC) Failure «TEST 12A»(ref-679-S34283059762000031300000) (1) Replace SKIM and perform «SKIM INITIALIZATION PROCEDURE»(ref-679-S00711857402000031300000) .

TRANSPONDER COMMUNICATION FAILURE/TRANSPONDER CRC FAILURE

Using customer's extra key, insert key into ignition switch and turn switch to RUN position. Using scan tool, erase DTCs. Cycle ignition switch on, then off. Read DTCs. If DTC is reset, replace SKIM and perform SKIM INITIALIZATION PROCEDURE . If DTC is not reset, erase codes. Replace and program new key. See appropriate ANTI-THEFT SYSTEM article.

TRANSPONDER ID MISMATCH OR TRANSPONDER RESPONSE MISMATCH

Note. Perform SKIS TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-1A after each repair.

1. Obtain customer's extra key and go to next step. If no other key is available, have new key cut and go to SKIS TEST 3C.
2. Using customer's extra key, insert key into ignition switch and turn switch to RUN position. Using scan tool, erase DTCs. Cycle ignition switch on, then off. Read DTCs. If DTC is reset, replace SKIM and perform «SKIM INITIALIZATION PROCEDURE»(ref-679-S00711857402000031300000) . If DTC is not reset, erase codes. Replace and program new key. See appropriate ANTI-THEFT SYSTEM article.

Note. Perform SKIS TEST 3A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-1A after each repair.

Place key in ignition switch and turn to RUN position. Using scan tool, select MISCELLANEOUS, then PROGRAM NEW KEY. Read CURRENT KEY STATUS. If status is PROGRAMING SUCCESSFUL, erase DTCs. Test is complete. If status is PROGRAMING FAILED, replace SKIM and perform SKIM INITIALIZATION PROCEDURE . If status is MAXIMUM KEY LIMIT, no additional keys can be programmed. See appropriate ANTI-THEFT SYSTEMS article. If none of the above status messages are displayed, replace SKIM and perform SKIM INITIALIZATION PROCEDURE .

Note. Perform SKIS TEST 3A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-1A after each repair.

Place key in ignition switch and turn to RUN position. Using scan tool, select MISCELLANEOUS, then PROGRAM NEW KEY. Read CURRENT KEY STATUS. If status is MAXIMUM KEY LIMIT, no additional keys can be programmed. See appropriate ANTI-THEFT SYSTEM article. If status is PROGRAMING FAILED, replace SKIM and perform SKIM INITIALIZATION PROCEDURE . If status is PROGRAMING SUCCESSFUL, erase DTCs. Replace original defective key. If status is PROGRAMING NOT ATTEMPTED, repeat procedure. If none of the above messages are displayed, replace SKIM and perform SKIM INITIALIZATION PROCEDURE .

VIN MISMATCH

Note. Perform SKIS TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-1A after each repair.

1. Using scan tool, read VIN from Powertrain Control Module (PCM). If go to next step. If VIN displayed by scan tool does not match VIN on dash mounted plate, go to step 5 .
2. Using scan tool, read VIN stored in SKIM's memory. If VIN displayed by scan tool matches VIN on dash mounted plate, go to next step. If VIN displayed by scan tool does not match VIN on dash mounted plate
3. Using scan tool, erase VIN MISMATCH DTC. Verify that DTC has been cleared from memory. If VIN MISMATCH DTC no longer present, go to next step. If VIN MISMATCH DTC is still present in memory, replace SKIM and perform «SKIM INITIALIZATION PROCEDURE»(ref-679-S00711857402000031300000) .
4. Start engine and allow to idle for 3 minutes. Read SKIM DTCs. If VIN MISMATCH DTC resets, replace SKIM and perform «SKIM INITIALIZATION PROCEDURE»(ref-679-S00711857402000031300000) . If VIN MISMATCH DTC is no longer present, system is currently functioning correctly.
5. Using scan tool, reprogram correct VIN into PCM's memory following scan tool instruction manual. Using scan tool, erase VIN MISMATCH DTC. Verify that DTC has been cleared from memory. Using scan tool, read VIN stored in SKIM's memory. If VIN MISMATCH DTC resets, replace SKIM and perform «SKIM INITIALIZATION PROCEDURE»(ref-679-S00711857402000031300000) . If VIN MISMATCH DTC is no longer present, system is currently functioning correctly.

VIN MISMATCH, ROLLING CODE FAILURE & EEPROM FAILURE

Note. Perform SKIS TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-1A after each repair.

1. Using scan tool, erase SKIM DTCs. Start engine 20 times. Using scan tool, read DTCs. If EEPROM FAILURE DTC is present, replace SKIM and perform «SKIM INITIALIZATION PROCEDURE»(ref-679-S00711857402000031300000) . If EEPROM FAILURE DTC is not present, go to next step.
2. Start engine and allow to idle for 3 minutes. Read SKIM DTCs. If VIN MISMATCH DTC is set, go to «SKIS TEST 4A»(ref-679-S35544568522000031300000) . If ROLLING CODE DTC is set, go to «SKIS TEST 10A»(ref-679-S09935948822000031300000) . If neither of above DTCs are displayed, system is currently functioning correctly.

EEPROM FAILURE

Note. Perform SKIS TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-1A after each repair.

Using scan tool, erase SKIM DTCs. Turn ignition off and wait 10 seconds. Start engine 20 times. Using scan tool, read DTCs. If EEPROM FAILURE DTC is present, replace SKIM and perform SKIM INITIALIZATION PROCEDURE . If EEPROM FAILURE DTC is not present, system is currently functioning correctly.

INTERNAL SKIM FAILURE

Note. Perform SKIS TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-1A after each repair.

Using scan tool, erase SKIM DTCs. Turn ignition off and wait 10 seconds. Start engine 20 times. Using scan tool, read DTCs. If INTERNAL SKIM FAILURE DTC is present, replace SKIM and perform SKIM INITIALIZATION PROCEDURE . If INTERNAL SKIM FAILURE DTC is not present, system is currently functioning correctly.

SERIAL LINK EXTERNAL FAILURE, PCM STATUS FAILURE OR ROLLING CODE FAILURE

Note. Perform SKIS TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-1A after each repair.

1. Using scan tool, erase SKIM DTCs. Turn ignition on and wait 10 seconds. Start engine 20 times. Using scan tool, read DTCs. If SKIM DTCs are present, go to next step. If no SKIM DTCs are present, system is currently functioning correctly.
2. Using scan tool, select THEFT ALARM, then SKIM. If scan tool displays NO RESPONSE, go to TEST 15A in appropriate VEHICLE COMMUNICATIONS article. If scan tool does not display NO RESPONSE, go to next step.
3. Using scan tool, select BODY, BODY COMPUTER, SYSTEM TEST and then PCM MONITOR. If scan tool displays PCM ACTIVE ON THE BUS, go to next step. If scan tool does not display PCM ACTIVE ON THE BUS, go to TEST 14A in appropriate VEHICLE COMMUNICATIONS article.
4. Using scan tool, select ENGINE. Read DTCs. If any engine related DTCs are present, go to appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE. If no engine related DTCs are present, replace SKIM and perform «SKIM INITIALIZATION PROCEDURE»(ref-679-S00711857402000031300000) .

SERIAL LINK EXTERNAL FAILURE

Note. Perform SKIS TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-1A after each repair.

1. Using scan tool, erase SKIM DTCs. Attempt another secret key transfer to PCM. Read DTCs. If SERIAL LINK EXTERNAL DTC is present, go to next step. If SERIAL LINK EXTERNAL DTC is not present, system is currently functioning correctly.
2. Using scan tool, select THEFT ALARM, then SKIM. If scan tool displays NO RESPONSE, go to TEST 15A in appropriate VEHICLE COMMUNICATIONS article. If scan tool does not display NO RESPONSE, go to next step.
3. Using scan tool, select BODY, BODY COMPUTER, SYSTEM TEST and then PCM MONITOR. If scan tool displays PCM ACTIVE ON THE BUS, go to next step. If scan tool does not display PCM ACTIVE ON THE BUS, go to TEST 14A in appropriate VEHICLE COMMUNICATIONS article.
4. Using scan tool, select ENGINE. Read DTCs. If any engine related DTCs are present, go to appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE. If no engine related DTCs are present, replace SKIM and perform «SKIM INITIALIZATION PROCEDURE»(ref-679-S00711857402000031300000) .

Note. Perform SKIS TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-1A after each repair.

1. Using scan tool, select THEFT ALARM, then SKIM. If scan tool displays NO RESPONSE, go to TEST 15A in appropriate VEHICLE COMMUNICATIONS article. If scan tool does not display NO RESPONSE, go to next step.
2. Using scan tool, select BODY, BODY COMPUTER, SYSTEM TEST and then PCM MONITOR. If scan tool displays PCM ACTIVE ON THE BUS, go to next step. If scan tool does not display PCM ACTIVE ON THE BUS, go to TEST 14A in appropriate VEHICLE COMMUNICATIONS article.
3. Using scan tool, select ENGINE. Read DTCs. If any engine related DTCs are present, go to appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE. If no engine related DTCs are present, replace SKIM and perform «SKIM INITIALIZATION PROCEDURE»(ref-679-S00711857402000031300000) .

TRANSPONDER ID MISMATCH OR TRANSPONDER RESPONSE MISMATCH & EEPROM FAILURE

Note. Perform SKIS TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-1A after each repair.

1. Using scan tool, erase SKIM DTCs. Turn ignition off and wait 10 seconds. Start engine 20 times. Using scan tool, read DTCs. If EEPROM FAILURE and TRANSPONDER DTCs are present, replace SKIM and perform «SKIM INITIALIZATION PROCEDURE»(ref-679-S00711857402000031300000) . If EEPROM FAILURE and TRANSPONDER DTCs are not present, go to next step.
2. If only EEPROM FAILURE DTC is present, go to SKIS TEST 6A. If EEPROM FAILURE DTC is not present but TRANSPONDER DTC is present, go to SKIS TEST 3A. If none of the above DTCs are present, system is currently functioning correctly.

TRANSPONDER CRC FAILURE, TRANSPONDER COMMUNICATION, ID MISMATCH OR RESPONSE MISMATCH

Note. Perform SKIS TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-1A after each repair.

Using each of customer's keys, start vehicle. Using scan tool, read SKIM DTCs. If TRANSPONDER DTC is present, replace SKIM and perform SKIM INITIALIZATION PROCEDURE . If TRANSPONDER DTC is not present, system is currently functioning correctly.

INITIALIZATION PROCEDURE

1. Obtain vehicle's unique PIN number assigned to it's original SKIM module from vehicle owner or Chrysler's customer center.
2. Using scan tool, select THEFT ALARM, SKIM, then MISCELLANEOUS. Select SKIM MODULE REPLACED function.
3. Enter SECURED ACCESS mode using unique 4 digit PIN number.
4. Program vehicle's VIN number into SKIM's memory.
5. Program country code into SKIM's memory (U.S.).
6. Transfer vehicle's unique Secret Key data from PCM. This process will require SKIM module to be in SECURED ACCESS mode. The PIN number must be entered into scan tool before SKIM will enter SECURED ACCESS mode. Once SECURED ACCESS mode is active, SKIM will remain in that mode for 60 seconds.
7. Program all customer keys into SKIM's memory. This requires that SKIM be in SECURED ACCESS mode. The SKIM will immediately exit SECURED ACCESS mode after each key is programmed.

IDENTIFYING SPEED PROPORTIONAL STEERING PROBLEMS

1. Conduct a thorough visual inspection of speed proportional steering system. Check for damaged components or disconnected harness connectors. Repair as needed.
2. Connect scan tool to DLC. Turn ignition on. Using scan tool, select BCM. Read and record all speed proportional steering system DTCs. If any DTCs (fault messages) are present, see SPEED PROPORTIONAL STEERING SYSTEM DIAGNOSTIC TEST DIRECTORY table. Proceed to appropriate test. If no DTCs are present, go to TEST 5A. SPEED PROPORTIONAL STEERING SYSTEM DIAGNOSTIC TEST DIRECTORY Fault Message Perform Speed Proportional Steering Circuit Open Or Shorted To Ground «TEST 2A»(ref-679-S08125388582000031300000) Speed Proportional Steering Circuit Shorted To Voltage «TEST 3A»(ref-679-S19452265322000031300000) Speed Proportional Steering Solenoid Over-Temperature «TEST 4A»(ref-679-S27527284442000031300000)

SPEED PROPORTIONAL STEERING CIRCUIT OPEN OR SHORTED TO GROUND

Note. Perform SPEED PROPORTIONAL STEERING TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-5A after each repair.

1. Start engine and turn steering wheel while monitoring amount of power steering assist. Using scan tool, de-activate Speed Proportional Steering (SPS) solenoid for 15 seconds. Turn steering wheel while monitoring amount of power steering assist. If steering has less power assist once SPS solenoid is de-activated, go to next step. If steering power assist is unchanged once SPS solenoid is de-activated, go to step 3.
2. System is currently operating correctly. Inspect condition of Body Control Module (BCM) internal 20-pin connector. Body Control Module (BCM). BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1) Inspect SPS solenoid harness connector. Connector is located next to master cylinder. Clean and repair either connection as needed.
3. Turn ignition off. Inspect SPS solenoid harness connector. Connector is located next to master cylinder. Clean and repair either connection as needed. If connection is okay, go to next step.
4. Disconnect SPS solenoid connector. Using ohmmeter, measure resistance between SPS solenoid component connector terminals. If resistance is 5.7-6.3 ohms at 68° F (20° C), go to next step. If resistance is not 5.7-6.3 ohms at 68° F (20° C), replace SPS solenoid.
5. Turn ignition on. Using test light, probe terminal No. 2 (Violet/Orange wire) on SPS solenoid harness connector. If test light is brightly illuminated, repair Violet/Orange wire for short to ground. If test light is not brightly illuminated, go to next step.
6. Using test light, probe terminal No. 1 (Light Green/Pink wire) on SPS solenoid harness connector. If test light is illuminated, repair Light Green/Pink wire for short to ground. If test light is not illuminated, go to next step.
7. Disconnect Body Control Module (BCM) from junction block. BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1) Inspect junction block 20-pin internal connector. Measure resistance between terminals No. 3 and 4 on junction block 20-pin internal connector. If resistance is less than 100 ohms, repair SPS negative (Light Green/Pink wire) circuit for short to positive (Violet/Orange wire) circuit. If resistance is 100 ohms or greater, go to next step.
8. Inspect continuity of both SPS solenoid circuits between harness connector and junction block 20-pin internal connector. If continuity is not present on either circuit, repair as needed. If both circuits are okay, replace BCM.

SPEED PROPORTIONAL STEERING CIRCUIT SHORTED TO VOLTAGE

Note. Perform SPEED PROPORTIONAL STEERING TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-5A after each repair.

1. Start engine and turn steering wheel while monitoring amount of power steering assist. Using scan tool, de-activate Speed Proportional Steering (SPS) solenoid for 15 seconds. Turn steering wheel while monitoring amount of power steering assist. If steering has less power assist once SPS solenoid is de-activated, go to next step. If steering power assist is unchanged once SPS solenoid is de-activated, go to step 3.
2. System is currently operating correctly. Inspect condition of Body Control Module (BCM) internal 20-pin connector. Body Control Module (BCM). BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1) Inspect SPS solenoid harness connector. Connector is located next to master cylinder. Clean and repair either connection as needed.
3. Turn ignition off. Inspect SPS solenoid harness connector. Connector is located next to master cylinder. Clean and repair either connection as needed. If connection is okay, go to next step.
4. Disconnect SPS solenoid connector. Using ohmmeter, measure resistance between SPS solenoid component connector terminals. If resistance is 5.7-6.3 ohms at 68° F (20° C), go to next step. If resistance is not 5.7-6.3 ohms at 68° F (20° C), replace SPS solenoid.
5. Start engine and wait 10 seconds. Using voltmeter, measure voltage between ground and terminal No. 2 (Violet/Orange wire) on SPS solenoid harness connector. If voltage is greater than one volt, repair Violet/Orange wire for short to voltage. If voltage is one volt or less, go to next step.
6. Using voltmeter, measure voltage between ground and terminal No. 1 (Light Green/Pink wire) on SPS solenoid harness connector. If voltage is greater than one volt, repair Light Green/Pink wire for short to voltage. If voltage is one volt or less, go to next step.
7. Disconnect Body Control Module (BCM) from junction block. BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1) Inspect junction block 20-pin internal connector. Measure resistance between terminals No. 3 and 4 on junction block 20-pin internal connector. If resistance is less than 5 ohms, repair SPS negative (Light Green/Pink wire) circuit for short to positive (Violet/Orange wire) circuit. If resistance is 5 ohms or greater, replace BCM.

SPEED PROPORTIONAL STEERING SOLENOID OVER-TEMPERATURE

Note. Perform SPEED PROPORTIONAL STEERING TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-5A after each repair.

1. Start engine and turn steering wheel while monitoring amount of power steering assist. Using scan tool, de-activate Speed Proportional Steering (SPS) solenoid for 15 seconds. Turn steering wheel while monitoring amount of power steering assist. If steering has less power assist once SPS solenoid is de-activated, go to next step. If steering power assist is unchanged once SPS solenoid is de-activated, go to step 3.
2. System is currently operating correctly. Inspect condition of Body Control Module (BCM) internal 20-pin connector. Body Control Module (BCM). BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1) Inspect SPS solenoid harness connector. Connector is located next to master cylinder. Clean and repair either connection as needed.
3. Turn steering wheel from lock to lock position 10 times. Turn ignition off. Inspect SPS solenoid harness connector. Connector is located next to master cylinder. Clean and repair either connection as needed. If connection is okay, go to next step.
4. Disconnect SPS solenoid connector. Using ohmmeter, measure resistance between SPS solenoid component connector terminals. If resistance is 5.7-6.3 ohms at 68° F (20° C), go to next step. If resistance is not 5.7-6.3 ohms at 68° F (20° C), replace SPS solenoid.
5. Inspect both SPS solenoid circuits between harness connector and junction block 20-pin internal connector for intermittent short to ground. If short is not present on either circuit, repair as needed. If both circuits are okay, replace BCM.

IDENTIFYING VEHICLE THEFT SECURITY SYSTEM PROBLEMS

Note. Perform SYMPTOM ID TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-2A after each repair.

1. If VTSS is operating without being tripped, select THEFT ALARM using scan tool. Select MONITOR DISPLAY and read ALARM TRIPPED BY status.
2. If VTSS indicator light is illuminated constantly 30 seconds after key is turned on or while driving, go to «VTSS TEST 3A»(ref-679-S38745983102000031300000).
3. Using scan tool, select BODY SYSTEM, then BODY COMPUTER. Verify communication with Body Control Module (BCM). If scan tool displays NO RESPONSE, go to TEST 1A in appropriate VEHICLE COMMUNICATIONS article.
4. Using scan tool, select MONITOR DISPLAY. Read VTSS status. If VTSS mode is not DISARMED, go to «VTSS TEST 2A»(ref-679-S28992570692000031300000). If VTSS mode is DISARMED, go to next step.
5. Using scan tool, select SENSORS. Read IGNITION VOLTAGE. If battery voltage is displayed with ignition on, go to next step. If battery voltage is not displayed with ignition on, go to TEST 16A in appropriate VEHICLE COMMUNICATIONS article.
6. Using scan tool, check KEY IN IGNITION SWITCH status. If scan tool displays CLOSED with key inserted, go to next step. If scan tool does not displayed CLOSED with key inserted, go to «POWER DOOR LOCK TEST 9A»(ref-679-S12057861112000031300000).
7. Using scan tool, select MISCELLANEOUS, then CHANGE MODE. Select DIAGNOSTICS. VTSS is now in diagnostic mode. Follow scan tool directions. When entering diagnostic mode with key in ignition switch, horn should sound twice and headlights and VTSS indicator light should flash. If horn does not sound, go to «VTSS TEST 4A»(ref-679-S12754755942000031300000). If VTSS indicator light does not illuminate, go to «VTSS TEST 5A»(ref-679-S41462374572000031300000). If headlights do not illuminate, go to «EXTERIOR LIGHTING TEST 1A»(ref-679-S24092091872000031300000).
8. Remove key from ignition switch. Open and close each door. Horn should sound after each action. If horn does not sound, go to «DOOR AJAR TEST 1A»(ref-679-S14844634192000031300000). Rotate key in each front door key cylinder. Horn should sound. If horn does not sound, go to «POWER DOOR LOCK TEST 1A»(ref-679-S32375932942000031300000).
9. Using scan tool, select MONITOR DISPLAY. Read VTSS status. If VTSS mode is other than DISARMED, go to «VTSS TEST 2A»(ref-679-S28992570692000031300000). If engine controller is 1 NO RESPONSE/2 NO RESPONSE, go to TEST 9A in appropriate VEHICLE COMMUNICATIONS article. If engine controller is 1 NOT OK TO ARM VTSS/OK TO RUN ENGINE, replace Powertrain Control Module (PCM). (Scheme 5)
10. If problem is with Remote Keyless Entry (RKE) arm/disarm function, go to «POWER DOOR LOCK TEST 11A»(ref-679-S08626388622000031300000).

DISARMING VTSS SYSTEM

Note. Perform VTSS TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-2A after each repair.

1. Turn ignition off. Insert key into driver's door and turn lock to UNLOCK position. Turn ignition on. Using scan tool, select THEFT ALARM, then MONITORS. Read VTSS status. If scan tool displays CURRENT MODE DISARMED, go to «VTSS TEST 1A»(ref-679-S41577556332000031300000). If scan tool does not display CURRENT MODE DISARMED, go to next step.
2. Turn ignition off. Insert key into right door and turn lock to UNLOCK position. Turn ignition on. Read VTSS status. If scan tool displays CURRENT MODE DISARMED, go to «POWER DOOR LOCK TEST 14A»(ref-679-S24699774112000031300000). If scan tool does not display CURRENT MODE DISARMED, go to next step.
3. Using RKE transmitter, unlock doors. Read VTSS status. If scan tool displays CURRENT MODE DISARMED, go to «POWER DOOR LOCK TEST 4A»(ref-679-S14101210602000031300000). If scan tool does not display CURRENT MODE DISARMED, replace Body Control Module (BCM). BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1)

VTSS INDICATOR LIGHT ON CONSTANTLY

Note. Perform VTSS TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-2A after each repair.

1. Using scan tool, select SYSTEM TEST, then PCM MONITOR. If scan tool displays PCM ACTIVE ON BUS, go to next step. If scan tool does not display PCM ACTIVE ON BUS, go to go to TEST 9A in appropriate VEHICLE COMMUNICATIONS article.
2. Using scan tool, select INPUTS/OUTPUTS. Read decklid cylinder switch status. If scan tool displays CLOSED, go to step 6. If scan tool does not display CLOSED, go to next step.
3. Disconnect decklid cylinder switch. Using external ohmmeter, measure resistance between ground and terminal No. 2 (Black wire) on cylinder switch harness connector. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or greater, repair open Black wire.
4. Connect jumper wire across decklid cylinder switch harness connector terminals. Using scan tool, read decklid cylinder switch status. If scan tool displays CLOSED, replace decklid cylinder switch. If scan tool does not display CLOSED, go to next step.
5. Disconnect Body Control Module (BCM) Blue 16-pin connector C4. BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1)
6. Disconnect Body Control Module (BCM) Blue 16-pin connector C4. BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1)

HORN CIRCUIT MALFUNCTION

Note. Perform VTSS TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-2A after each repair.

1. Press horn button on steering wheel. If horn does not sound, repair as needed. Using scan tool, select VEHICLE THEFT, then INPUTS/OUTPUTS. Read trunk key cylinder status. If scan tool displays CLOSED, go to next step. If scan tool does not display CLOSED, go to «VTSS TEST 3A»(ref-679-S38745983102000031300000).
2. Disconnect Body Control Module (BCM) from junction block. BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1)

VTSS INDICATOR LIGHT DRIVER MALFUNCTION

Note. Perform VTSS TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-2A after each repair.

1. Disconnect Automatic Temperature Control (ATC) sun sensor/VTSS indicator connector. ATC sun sensor is located under instrument panel top cover. Using external voltmeter, measure voltage between terminals No. 1 (Pink wire) and 2 (Black/Orange wire) on ATC sun sensor/VTSS indicator harness connector. Using scan tool, actuate VTSS indicator light. If voltage toggles up to 10 volts, replace VTSS indicator light. If voltage does not toggle up to 10 volts, go to next step.
2. Measure voltage between ground and terminal No. 1 (Pink wire) on ATC sun sensor/VTSS indicator harness connector. If voltage is 10 volts or less, repair open Pink wire. If voltage is greater than 10 volts, go to next step.
3. Disconnect Body Control Module (BCM) Black 24-pin connector C2. BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1)

IDENTIFYING WINDSHIELD WIPER SYSTEM PROBLEMS

Note. Perform SYMPTOM ID TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-2A after each repair.

Turn ignition on and verify operation of windshield wipers. Operate windshield wiper system in high speed mode, low speed mode, intermittent mode and wash mode (with wipers off). Using scan tool, check DTC's. See WINDSHIELD WIPER SYSTEM DTC DIRECTORY table. If wiper system does not operate properly, perform indicated test. See WINDSHIELD WIPER SYSTEM DIAGNOSTIC TEST DIRECTORY table.

WINDSHIELD WIPER SYSTEM DTC DIRECTORY

WINDSHIELD WIPER SYSTEM DIAGNOSTIC TEST DIRECTORY

WIPER ON/OFF RELAY CONTROL OPEN OR SHORT CIRCUIT

Note. Perform WINDSHIELD WIPER TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-2A after each repair.

1. Remove wiper ON/OFF relay from Power Distribution Center (PDC). (Scheme 8) PDC is located in engine compartment. (Scheme 5) Turn ignition on. Using external voltmeter, measure voltage between ground and terminal "A" (Red wire) on wiper ON/OFF relay socket. If voltage is 10 volts or less, repair open Red wire. If voltage is greater than 10 volts, go to next step.
2. Install wiper ON/OFF relay in PDC. Disconnect Body Control Module (BCM) Bone 12-pin connector C3. BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1) Using external voltmeter, measure voltage between ground and terminal No. 4 (Red/White wire) on Bone harness connector. If voltage is 8 volts or less, go to next step. If voltage is greater than 8 volts, replace BCM.
3. Disconnect wiper ON/OFF relay. Connect jumper wire between ground and terminal "C" on wiper ON/OFF relay. Using external ohmmeter, measure resistance between ground and terminal No. 4 (Red/White wire) on BCM Bone 12-pin connector C3. If resistance is less than 5 ohms, replace wiper ON/OFF relay. If resistance is 5 ohms or greater, repair open Red/White wire.

Scheme 8

WIPER PARK SWITCH FAILURE

Note. Perform WINDSHIELD WIPER TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-2A after each repair.

1. Operate windshield wipers in intermittent mode. Using scan tool, monitor wiper park switch. If scan tool displays wiper park switch toggle CLOSED to OPEN, system is currently operating correctly. If scan tool does not display wiper park switch toggle CLOSED to OPEN, go to next step.
2. Turn ignition off. Access Body Control Module (BCM). BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1) Using external ohmmeter, backprobe BCM Bone 12-pin connector C3.
3. Measure resistance between ground and terminal No. 3 (Tan/Red wire). Turn ignition on. Place wiper switch in LOW speed position. If resistance pulsates, replace BCM. If resistance does not pulsate, go to next step.
4. Turn ignition off. Connect jumper wire between ground and terminal No. 3 (Tan/Red wire) on BCM Bone connector. Disconnect wiper motor connector. Using external ohmmeter, measure resistance between ground and terminal No. 4 (Tan/Red wire) on wiper motor harness connector. If resistance is less than 5 ohms, replace wiper motor. If resistance is 5 ohms or greater, repair open Tan/Red wire.

WIPER ON/OFF RELAY CONTROL CIRCUIT SHORTED HIGH

Note. Perform WINDSHIELD WIPER TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-2A after each repair.

1. Remove wiper ON/OFF relay from Power Distribution Center (PDC). (Scheme 8) PDC is located in engine compartment. (Scheme 5) Turn ignition on. Place wiper switch in LOW speed position. Using external voltmeter, measure voltage between ground and terminal "C" (Red/White wire) on ON/OFF relay socket. If voltage is one volt or less, replace wiper ON/OFF relay. If voltage is greater than one volt, go to next step.
2. Disconnect Body Control Module (BCM) from junction block. BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1)

WIPERS NOT OPERATING

Note. Perform WINDSHIELD WIPER TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-2A after each repair.

1. Using scan tool, actuate low speed wiper motor test. If wipers operate in low speed, go to «WINDSHIELD WIPER TEST 5B»(ref-679-S40927191072000031300000). If wipers do not operate in low speed, go to next step.
2. Stop wiper motor actuation test. Gain access to Power Distribution Center (PDC). PDC is located in engine compartment. (Scheme 5) Inspect fuse "M". If fuse is open, go to «WINDSHIELD WIPER TEST 5C»(ref-679-S17372873172000031300000). If fuse is okay, go to next step.
3. Remove fuse "M". Using external voltmeter, measure voltage between ground and B+ circuit on fuse "M" socket. If voltage is 10 volts or less, repair open B+ circuit. If voltage is greater than 10 volts, go to next step.
4. Install fuse "M". Remove wiper ON/OFF relay from Power Distribution Center (PDC). (Scheme 8) Using external voltmeter, measure voltage between ground and terminal "D" (Red wire ) on ON/OFF relay socket. If voltage is 10 volts or less, repair open Red wire circuit. If voltage is greater than 10 volts, go to next step.
5. Connect jumper wire between terminals "B" and "D" on ON/OFF relay socket. If wiper motor operates, go to «WINDSHIELD WIPER TEST 5D»(ref-679-S17117055362000031300000). If wiper motor does not operate, go to next step.
6. Disconnect wiper HI/LO relay form PDC. Do not disconnect jumper wire. Using external voltmeter, measure voltage between ground and terminal "B" (Dark Green/Yellow wire) on HI/LO relay socket. If voltage is 10 volts or less, repair open Dark Green/Yellow wire between wiper ON/OFF and HI/LO relays. If voltage is greater than 10 volts, go to next step.
7. Disconnect jumper wire. Connect jumper wire between terminal "D" on wiper ON/OFF relay socket and terminal "E" on wiper HI/LO relay socket. If wiper motor operates in low speed, replace HI/LO relay. If wiper motor does not operate in low speed, go to «WINDSHIELD WIPER TEST 5E»(ref-679-S14855701702000031300000).

Note. Perform WINDSHIELD WIPER TEST 5A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-2A after each repair.

1. Stop wiper motor actuation. Ensure ignition is on. Place wiper switch in LOW position. Using scan tool, read intermittent wiper switch voltage. If scan tool displays INTRMT WIPE: 2.5V or greater, replace Body Control Module (BCM). BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1) If scan tool displays INTRMT WIPE: 2.4V or less, go to next step.
2. Remove and inspect fuse No. 5 in junction block. (Scheme 3) If fuse is open, go to step 5. If fuse is okay, go to next step.
3. Install fuse. Disconnect multifunction switch connector. (Scheme 2) Using external voltmeter, measure voltage between ground and terminal No. 1 (Dark Blue wire) on switch harness connector. If voltage is 10 volts or less, repair open Dark Blue wire. If voltage is greater than 10 volts, go to next step.
4. Turn ignition off. Disconnect BCM Black 24-pin connector C2. Using external ohmmeter, measure resistance of Dark Green/Red wire between terminal No. 3 on multifunction switch harness connector and terminal No. 8 on BCM Black harness connector. If resistance is less than 5 ohms, replace multifunction switch. If resistance is 5 ohms or greater, repair open Dark Green/Red wire.
5. Turn ignition on. Disconnect multifunction switch connector. See 5. Using external ohmmeter, measure resistance between ground and terminal No. 1 (Dark Blue wire) on switch harness connector. If resistance is less than 5 ohms, repair Dark Blue wire for short to ground. Replace fuse No. 5. If resistance is 5 ohms or greater, go to next step.
6. Using external ohmmeter, measure resistance between ground and terminal No. 3 (Dark Green/Red wire) on multifunction switch harness connector. If resistance is less than 5 ohms, repair Dark Green/Red wire for short to ground. Replace fuse No. 5. If resistance is 5 ohms or greater, replace multifunction switch. Replace fuse No. 5.

Note. Perform WINDSHIELD WIPER TEST 5A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-2A after each repair.

1. Turn ignition off. Disconnect wiper ON/OFF relay from PDC. Disconnect wiper HI/LO relay. Using external ohmmeter, measure resistance between ground and terminal "D" (Red wire) on ON/OFF relay socket. If resistance is less than 5 ohms, repair Red wire circuit for short to ground. Replace fuse "M". If resistance is 5 ohms or greater, go to next step.
2. Measure resistance between ground and terminal "B" (Dark Green/Yellow wire) on ON/OFF relay socket. If resistance is less than 5 ohms, repair Dark Green/Yellow wire for short to ground. Replace fuse "M". If resistance is 5 ohms or greater, go to next step.
3. Disconnect wiper motor connector. Using external ohmmeter, measure resistance between ground and terminal "E" (Brown/White wire) on HI/LO relay socket. If resistance is less than 5 ohms, repair Brown/White wire for short to ground. Replace fuse "M". If resistance is 5 ohms or greater, go to next step.
4. Using scan tool in ohmmeter mode, measure resistance at terminal "D" (Red/Yellow wire) on HI/LO relay socket. If resistance is less than 5 ohms, repair Red/Yellow wire for short to ground. Replace fuse "M". If resistance is 5 ohms or greater, replace wiper motor. Replace fuse "M".

Note. Perform WINDSHIELD WIPER TEST 5A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-2A after each repair.

1. Remove jumper wire. Turn ignition on. Using external voltmeter, measure voltage between ground and terminal "A" (Red wire) on wiper ON/OFF relay socket. If voltage is 10 volts or less, repair open Red wire. If voltage is greater than 10 volts, go to next step.
2. Install wiper ON/OFF relay. Disconnect Body Control Module (BCM) Bone 12-pin connector C3. BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1) Connect jumper wire between ground and terminal No. 4 (Red/White wire) on BCM Bone connector. If wiper motor operates, replace BCM. If wiper motor does not operate, go to next step.
3. Turn ignition off. Remove wiper ON/OFF relay. Do not disconnect jumper wire. Using external ohmmeter, measure resistance between ground and terminal "C" (Red/White wire) on ON/OFF relay socket. If resistance is less than 5 ohms, replace wiper ON/OFF relay. If resistance is 5 ohms or greater, repair open Red/White wire.

Note. Perform WINDSHIELD WIPER TEST 5A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-2A after each repair.

1. Disconnect motor connector. Do not disconnect jumper wire. Using scan tool in voltmeter mode, measure voltage at terminal "E" (Brown/White wire) on wiper HI/LO relay socket. If voltage is 10 volts or less, repair open Brown/White wire. If voltage is greater than 10 volts, go to next step.
2. Ensure ignition, lights and accessories are off. Using scan tool in ohmmeter mode, measure resistance at "E" (Black wire) on wiper ON/OFF relay socket. If resistance is less than 5 ohms, replace wiper motor. If resistance is 5 ohms or greater, repair open Black wire.

WIPERS NOT OPERATING IN HIGH SPEED MODE

Note. Perform WINDSHIELD WIPER TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-2A after each repair.

1. Disconnect wiper HI/LO relay from Power Distribution Center. Remove wiper ON/OFF relay from Power Distribution Center (PDC). (Scheme 8) PDC is located in engine compartment. (Scheme 5)
2. Turn ignition on. Place wiper switch on low speed position. Using external voltmeter, measure voltage between ground and terminal "A" (Red wire) on HI/LO relay socket. If voltage is 10 volts or less, repair open Red wire. If voltage is greater than 10 volts, go to next step.
3. Connect jumper wire between terminals "B" and "D" on HI/LO relay socket. If wiper motor operates, go to step 5. If wiper motor does not operate, go to next step.
4. Disconnect wiper motor connector. Do not disconnect jumper wire. Using external voltmeter, measure voltage between ground and terminal No. 1 (Red/Yellow wire) on wiper motor harness connector. If voltage is 10 volts or less, repair open Red/Yellow wire. If voltage is greater than 10 volts, replace wiper motor.
5. Remove jumper wire. Using external voltmeter, measure voltage between terminal "B" and "C" on HI/LO relay socket. Place wiper switch in high position. If voltage is 9 volts or less, go to next step. If voltage is greater than 9 volts, replace wiper HI/LO relay.
6. Turn ignition off. Disconnect Body Control Module (BCM) Bone 12-pin connector C3. BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1) Connect jumper wire between ground and terminal No. 12 (Violet wire) on BCM Bone connector. Using external ohmmeter, measure resistance between ground and terminal "C" (Violet wire) on HI/LO relay socket. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or greater, repair open Violet wire.
7. Disconnect BCM Black 24-pin connector C2. Turn ignition on. Place wiper switch on high speed position. Using external voltmeter, measure voltage between ground and terminal No. 8 (Dark Green/Red wire) on BCM Black harness connector. If voltage is 10 volts or less, replace multifunction switch. If voltage is greater than 10 volts, replace BCM.

WIPERS NOT OPERATING IN LOW SPEED MODE

Note. Perform WINDSHIELD WIPER TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-2A after each repair.

1. Disconnect wiper HI/LO relay from Power Distribution Center. (Scheme 8) PDC is located in engine compartment. (Scheme 5)
2. Ensure ignition is off. Turn wiper switch to LOW speed position. Using external ohmmeter, measure resistance between ground and terminal "A" (Red wire) on HI/LO relay socket. If resistance is less than 100 ohms, repair Red wire for short to ground. If resistance is 100 ohms or greater, go to next step.
3. Connect jumper wire between terminals "B" and "E" on HI/LO relay socket. Turn ignition on. If wiper motor operates in low speed, replace HI/LO wiper relay. If wiper motor does not operate in low speed, go to next step.
4. Disconnect wiper motor connector. Do not disconnect jumper wire. Using external voltmeter, measure voltage between ground and terminal No. 2 (Brown/White wire) on wiper motor harness connector. If voltage is 10 volts or less, repair open Brown/White wire. If voltage is greater than 10 volts, replace wiper motor.

WIPERS NOT OPERATING IN INTERMITTENT SPEED MODE

Note. Perform WINDSHIELD WIPER TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-2A after each repair.

1. Turn ignition on. Move wiper switch through all intermittent wiper positions. If wipers do not function in each position, go to next step. If wipers function in some positions, replace multifunction switch.
2. Using scan tool, select SENSORS. Monitor intermittent wiper voltage at each intermittent position. If voltage changes proportionally in each intermittent position, replace Body Control Module (BCM). BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1)

WIPER WASH FUNCTION NOT OPERATING

Note. Perform WINDSHIELD WIPER TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-2A after each repair.

1. Ensure washer fluid bottle is full. Turn ignition on. Momentarily push and then release wash button on stalk switch. If washer and wipers operate correctly, system is currently functioning correctly. If washer does not operate, go to step 3. If washer operates and wiper do not operate, go to next step.
2. Using scan tool, monitor front washer switch input while pushing wash button on stalk switch. If scan tool displays washer switch toggling from ON to OFF, replace Body Control Module (BCM). BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1)
3. Turn ignition off. Disconnect washer pump connector. Using external ohmmeter, measure resistance between ground and terminal No. 1 (Black wire) on washer motor harness connector. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or greater, replace washer motor.
4. Turn ignition on. Using external voltmeter, measure voltage between ground and terminal No. 2 (Brown wire) on washer motor harness connector. Press washer button on stalk switch. If voltage is 10 volts or less, go to next step. If voltage is greater than 10 volts, replace washer motor.
5. Disconnect multifunction switch. (Scheme 2) Connect jumper wire between ground and terminal No. 2 (Brown wire) on washer motor harness connector. Using external ohmmeter, measure resistance between ground and terminal No. 2 (Brown wire) on multifunction switch harness connector. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or greater, repair open Brown wire.
6. Disconnect Body Control Module (BCM) Black 24-pin connector C2. BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1)

WIPERS OPERATE IN HIGH SPEED ONLY

Note. Perform WINDSHIELD WIPER TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-2A after each repair.

1. Remove HI/LO relay from Power Distribution Center (PDC). (Scheme 8) PDC is located in engine compartment. (Scheme 5) Using external voltmeter, measure voltage between terminals "B" and "C" on HI/LO relay socket. Turn ignition on. Turn wiper switch to LOW speed position. If voltage is 9 volts or less, replace HI/LO relay. If voltage is greater than 9 volts, go to next step.
2. Disconnect Body Control Module (BCM) Bone 12-pin connector C3. BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1)

WIPERS OPERATE IN WITH SWITCH IN OFF POSITION

Note. Perform WINDSHIELD WIPER TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-2A after each repair.

1. Disconnect Body Control Module (BCM) Black 24-pin connector C2. BCM is mounted to junction block located behind left end cap of instrument panel. (Scheme 1)
2. Disconnect BCM Bone 12-pin connector C3. If wipers stop, replace BCM. If wipers still operate, go to next step.
3. Disconnect wiper ON/OFF relay from Power Distribution Center (PDC). (Scheme 8) PDC is located in engine compartment. (Scheme 5) If wipers stop, repair Red/White wire (wiper ON/OFF relay control circuit) between ON/OFF relay and terminal No. 4 on BCM Bone 12-pin connector C3 for short to ground. If wipers still operate, repair Red/Yellow wire (wiper HI speed output circuit) or Brown/White wire (wiper LO speed output) between wiper HI/LO relay and wiper motor for short to battery voltage.