Inspection and Verification
- Verify the customer concern.
- Visually inspect for obvious signs of mechanical or electrical damage. Visual Inspection Chart VISUAL INSPECTION CHART Electrical Wiring harness Loose or corroded connections Battery junction box (BJB) fuses: 4 (10A) 5 (10A) 23 (30A) 24 (30A) 25 (40A) 27 (30A) 32 (30A) Central junction box (CJB) fuse 20 (10A) Lamp(s) Relay(s) Headlamp switch Instrument cluster Dimmer switch FEM REM
- If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
- If the cause is not visually evident, connect the diagnostic tool to the data link connector and select the vehicle to be tested from the diagnostic tool menu. If the diagnostic tool does not communicate with the vehicle: check that the program card is correctly installed. check the connections to the vehicle. check the ignition switch position.
- If the diagnostic tool still does not communicate with the vehicle, refer to the diagnostic tool operating manual.
- Carry out the diagnostic tool data link test. If the diagnostic tool responds with: SCP+, SCP-, ISO, CAN or UBP circuit fault; all electronic control units no response/not equipped, refer to «MODULE COMMUNICATIONS NETWORK»(ref-207567) . No response/not equipped for FEM, REFER to «MODULE COMMUNICATIONS NETWORK»(ref-207567) . No response/not equipped for REM, REFER to «MODULE COMMUNICATIONS NETWORK»(ref-207567) . System passed, retrieve and record the continuous diagnostic trouble codes (DTCs), erase the continuous DTCs and carry out self-test diagnostics for the FEM and REM.
- If the DTCs retrieved are related to the concern, go to FEM Diagnostic Trouble Code (DTC) Index or REM Diagnostic Trouble Code (DTC) Index.
- If no DTCs related to the concern are retrieved, GO to Symptom Chart.
FEM Diagnostic Trouble Code (DTC) Index
| DTC | Description | Source | Action |
|---|---|---|---|
| B1319 | Driver Door Ajar Circuit Failure | FEM | Go To PINPOINT TEST C: THE INTERIOR LAMPS STAY ON CONTINUOUSLY . |
| B1327 | Passenger Door Ajar Circuit Failure | FEM | Go To PINPOINT TEST C: THE INTERIOR LAMPS STAY ON CONTINUOUSLY . |
| B1342 | ECU Is Defective | FEM | CLEAR the DTC. REPEAT the FEM self-test. If DTC B1342 is retrieved, INSTALL a new FEM. REFER to MODULE COMMUNICATIONS NETWORK . |
| B2477 | Module Configuration Failure | FEM | REFER to MODULE COMMUNICATIONS NETWORK . |
FEM DIAGNOSTIC TROUBLE CODE INDEX
REM Diagnostic Trouble Code (DTC) Index
| DTC | Description | Source | Action |
|---|---|---|---|
| B2245 | Passenger Rear Door Ajar Circuit Open | REM | Go To PINPOINT TEST C: THE INTERIOR LAMPS STAY ON CONTINUOUSLY . |
| B1331 | Luggage Compartment Ajar Rear Door Circuit Failure | REM | Go To PINPOINT TEST E: THE INTERIOR LAMPS STAY ON CONTINUOUSLY - LUGGAGE COMPARTMENT LAMP ONLY . |
| B1342 | ECU Is Defective | REM | CLEAR the DTC. RETRIEVE the DTCs. If DTC B1342 is retrieved, INSTALL a new REM. REFER to MODULE COMMUNICATIONS NETWORK . |
| B2243 | Diver Rear Door Ajar Circuit Open | REM | Go To PINPOINT TEST C: THE INTERIOR LAMPS STAY ON CONTINUOUSLY . |
| B2477 | Module Configuration Failure | REM | REFER to MODULE COMMUNICATIONS NETWORK . |
REM DIAGNOSTIC TROUBLE CODE INDEX
Symptom Chart
| Condition | Possible Sources | Action |
|---|---|---|
| No communication with the front electronic module (FEM) | BJB fuse 25 (40A) CJBfuse20 (10A) Circuitry. FEM. | REFER to MODULE COMMUNICATIONS NETWORK . |
| No communication with the rear electronic module (REM) | BJB fuse 25 (40A) CJBfuse20 (10A) Circuitry. REM. | REFER to MODULE COMMUNICATIONS NETWORK . |
| The interior lamps are inoperative | BJB fuses: 5 (10A). 4 (10A). CJB. Circuits. FEM. | Go To PINPOINT TEST A: THE INTERIOR LAMPS ARE INOPERATIVE . |
| The interior lamps do not turn on with one door open | BJB. Auxiliary junction box. Lamps. Switch (es). Circuitry. | Go To PINPOINT TEST B: THE INTERIOR LAMPS DO NOT TURN ON WITH ONE DOOR OPEN . |
| The interior lamps stay on continuously | Door ajar switches. Auxiliary junction box. Circuits. Map/rear dome lamp switches. FEM. REM. | Go To PINPOINT TEST C: THE INTERIOR LAMPS STAY ON CONTINUOUSLY . |
| The glove compartment, LH and RH map lamps, LH and RH vanity mirror lamps or LH and RH grab handle lamps are inoperative | Circuitry. Lamps. Switches. | Go To PINPOINT TEST D: THE GLOVE COMPARTMENT, LH AND RH MAP LAMPS, LH AND RH VANITY MIRROR LAMPS OR LH AND RH GRAB HANDLE LAMPS ARE INOPERATIVE . |
| The interior lamps stay on continuously - luggage compartment lamp only | Circuitry. Luggage compartment lid ajar switch. Circuitry. REM. | Go To PINPOINT TEST E: THE INTERIOR LAMPS STAY ON CONTINUOUSLY - LUGGAGE COMPARTMENT LAMP ONLY . |
| The luggage compartment lid lamp is inoperative | Circuitry. Lamp. Luggage compartment lid ajar switch. REM. | Go To PINPOINT TEST F: THE LUGGAGE COMPARTMENT LAMP IS INOPERATIVE . |
SYMPTOM CHART
Scheme 1
| Pin Number (s) | Circuit Designation/Description | Normal Condition/Measurement |
|---|---|---|
| 11 | 31-DK20 (BK/RD) FEM power ground | Less than 5 ohms between FEM and ground with FEM disconnected. |
CIRCUIT DESIGNATION/DESCRIPTION
Scheme 2
| Pin Number (s) | Circuit Designation/Description | Normal Condition/Measurement |
|---|---|---|
| 12 | 9-LC36 (BN) RH front puddle lamp ground circuit | Greater than 10 volts between FEM and ground with FEM disconnected. Less than 5 ohms between FEM and RH front puddle lamp. |
| 18 | 9-LC34 (BN) LH front puddle lamp ground circuit | Greater than 10 volts between FEM and ground with FEM disconnected. Less than 5 ohms between FEM and LH front puddle lamp. |
CIRCUIT DESIGNATION/DESCRIPTION
Scheme 3
| Pin Number (s) | Circuit Designation/Description | Normal Condition/Measurement |
|---|---|---|
| 15 | 31S-GL47 (BK/BU) Passenger door ajar switch power circuit | Less than 5 ohms between FEM and ground with passenger door open. Greater than 10,000 ohms between FEM and ground with passenger door closed. |
CIRCUIT DESIGNATION/DESCRIPTION
Scheme 4
| Pin Number (s) | Circuit Designation/Description | Normal Condition/Measurement |
|---|---|---|
| 8 | 21S-GL46 (BK/YE) driver door ajar switch power circuit | Less than5 ohms between FEM and ground with driver door open. Greater than 10,000 ohms between FEM and ground with driver door closed. |
| 12 | 31S-LC3 (BK/BU) Interior lamp ground circuit between auxiliary junction box and FEM | Greater than 10 volts between FEM and ground. Greater than 10,000 ohms between FEM and ground. |
CIRCUIT DESIGNATION/DESCRIPTION
Scheme 5
| Pin Number (s) | Circuit Designation/Description | Normal Condition/Measurement |
|---|---|---|
| 11 | 31S-LB25(BK/BU) Luggage compartment lamp power circuit | Greater than 10 volts between REM and ground. Greater than 10,000 ohms between REM and ground. |
CIRCUIT DESIGNATION/DESCRIPTION
Scheme 6
| Pin Number (s) | Circuit Designation/Description | Normal Condition/Measurement |
|---|---|---|
| 14 | 8-GL20 (WH/BK) Luggage compartment lid ajar switch power circuit | Less than 5 ohms between REM and ground with luggage compartment lid open. Greater than 10,000 ohms between REM and ground with luggage compartment lid closed. |
CIRCUIT DESIGNATION/DESCRIPTION
Scheme 7
| Pin Number (s) | Circuit Designation/Description | Normal Condition/Measurement |
|---|---|---|
| 16 | 31S-GL12 (BK/OG) LH rear door ajar switch power circuit | Greater than 10,000 ohms between REM and ground with LH rear door closed. Less than 5 ohms between REM and ground with LH rear door open. |
CIRCUIT DESIGNATION/DESCRIPTION
Scheme 8
| Pin Number (s) | Circuit Designation/Description | Normal Condition/Measurement |
|---|---|---|
| 17 | 31S-GL19 (BK/GN) RH rear door ajar switch power circuit | Greater than 10,000 ohms between REM and ground with RH rear door closed. Less than 5 ohms between REM and ground with RH rear door open. |
CIRCUIT DESIGNATION/DESCRIPTION
Scheme 9
| Pin Number (s) | Circuit Designation/Description | Normal Condition/Measurement |
|---|---|---|
| 1 | 29S-LB8 (OG) glove compartment lamp power circuit | Greater than 10 volts between glove compartment lamp and ground. Greater than 10,000 ohms between glove compartment lamp and ground with lamp connector disconnected. |
| 2 | 31-LB8 (BK/OG) glove compartment lamp ground circuit | Less than 5 ohms between glove compartment lamp and ground. |
CIRCUIT DESIGNATION/DESCRIPTION
Scheme 10
| Pin Number (s) | Circuit Designation/Description | Normal Condition/Measurement |
|---|---|---|
| 1 (C266) | 31S-LC23 (BK/WH) RH footwell lamp ground circuit | Greater than 10,000 ohms between footwell lamp and ground with FEM disconnected. Less than 5 ohms between footwell lamp and FEM. |
| 1 (C209) | 31S-LC11 (BK/WH) LH footwell lamp ground circuit | Greater than 10,000 ohms between footwell lamp and ground with FEM disconnected. Less than 5 ohms between footwell lamp and FEM. |
| 2 (C266) | 29S-LC23 (OG/WH) RH footwell lamp power supply circuit | Greater than 10 volts between RH footwell lamp and ground. Greater than 10,000 ohms between RH footwell lamp and ground with footwell lamp disconnected. |
| 2 (C209) | 29S-LC11 (OG/WH) LH footwell lamp power supply circuit | Greater than 10 volts between LH footwell lamp and ground. Greater than 10,000 ohms between LH footwell lamp and ground with footwell lamp disconnected. |
CIRCUIT DESIGNATION/DESCRIPTION
Scheme 11
| Pin Number (s) | Circuit Designation/Description | Normal Condition/Measurement |
|---|---|---|
| 2 (C520) | 29S-LC34 (OG/YE) LH puddle lamp power supply circuit | Greater than 10 volts between LH puddle lamp and ground. Greater than 10,000 ohms between LH puddle lamp and ground. |
| 2 (C601) | 29S-LC36 (OG/YE) RH puddle lamp power circuit | Greater than 10 volts between RH puddle lamp and ground. Greater than 10,000 ohms between RH puddle lamp and ground. |
| 12 (C520) | 9-LC34 (BN) LH puddle lamp ground circuit | Greater than 10,000 ohms between puddle lamp and ground with FEM disconnected. Less than 5 ohms between puddle lamp and FEM. |
| 12 (C601) | 9-LC36 (BN) RH puddle lamp ground circuit | Greater than 10,000 ohms between puddle lamp and ground with FEM disconnected. Less than 5 ohms between puddle lamp and FEM. |
CIRCUIT DESIGNATION/DESCRIPTION
Scheme 12
| Pin Number(s) | Circuit Designation/Description | Normal Condition/Measurement |
|---|---|---|
| 6 (C525) | 31-AA58 (BK) Driver door ajar switch ground circuit | Less than 5 ohms between door ajar switch and ground. |
| 6 (C609) | 31-AA58 (BK) Passenger door ajar switch ground circuit | Less than 5 ohms between door ajar switch and ground. |
| 6 (C704) | 31-AA58 (BK) LH rear door ajar switch ground circuit | Less than 5 ohms between door ajar switch and ground. |
| 6 (C804) | 31-AA58 (BK) RH rear door ajar switch ground circuit | Less than 5 ohms between door ajar switch and ground. |
| 8 (C525) | 31S-GL46 (BK/YE) Driver door ajar switch power circuit | Greater than 10,000 ohms between door ajar switch and ground with door ajar switch and FEM disconnected. Less than 5 ohms between door ajar switch and FEM. |
| 8 (C609) | 31S-GL47 (BK/BU) Passenger door ajar switch power circuit | Greater than 10,000 ohms between door ajar switch and ground with door ajar switch and FEM disconnected. Less than 5 ohms between door ajar switch and FEM. |
| 8 (C704) | 31S-GL12 (BK/OG) LH rear door ajar switch power circuit | Greater than 10,000 ohms between door ajar switch and ground with door ajar switch and REM disconnected. Less than 5 ohms between door ajar switch and REM. |
| 8 (C804) | 31S-GL19 (BK/GN) RH rear door ajar switch power circuit | Greater than 10,000 ohms between door ajar switch and ground with door ajar switch and REM disconnected. Less than 5 ohms between door ajar switch and REM. |
CIRCUIT DESIGNATION/DESCRIPTION
Scheme 13
| Pin Number (s) | Circuit Designation/Description | Normal Condition/Measurement |
|---|---|---|
| 1 | 29S-LB25 (OG/BU) Luggage compartment lamp power circuit | Greater than 10 volts between luggage compartment lamp and ground. Greater than 10,000 ohms between luggage compartment lamp and ground. |
| 2 | 31S-LB25 (BK/BU) Luggage compartment lamp ground circuit | Greater than 10,000 ohms between luggage compartment lamp and ground with REM disconnected. Less than 5 ohms between luggage compartment lamp and REM. |
CIRCUIT DESIGNATION/DESCRIPTION
Scheme 14
| Pin Number (s) | Circuit Designation/Description | Normal Condition/Measurement |
|---|---|---|
| 1 | 8-GL20 (WH/BK) Luggage compartment lid ajar switch power circuit | Greater than 10,000 ohms between luggage compartment lid ajar switch and ground with luggage compartment lid ajar switch disconnected. Less than 5 ohms between luggage compartment lid ajar switch and REM. |
| 2 | 31-GL20 (BK/RD) Luggage compartment lid ajar switch ground circuit | Less than 5 ohms between luggage compartment lid ajar switch and ground. |
CIRCUIT DESIGNATION/DESCRIPTION
Scheme 15
| Pin Number (s) | Circuit Designation/Description | Normal Condition/Measurement |
|---|---|---|
| 1 (C903) | 31S-LB19 (BK/BU) RH map lamp ground circuit | Greater than 10,000 ohms between map lamp and ground with RH map lamp switch disconnected. Less than 5 ohms between RH map lamp and RH map lamp switch. |
| 1 (C908) | 31S-LB12 (BK/YE) LH map lamp ground circuit | Greater than 10,000 ohms between map lamp and ground with LH map lamp switch disconnected. Less than 5 ohms between LH map lamp and LH map lamp switch. |
| 2 (C903) | 29S-LB19 (OG/BU) RH map lamp power circuit | Greater than 10 volts between RH map lamp and ground. Greater than 10,000 ohms between RH map lamp and ground. |
| 2 (C908) | 29S-LB12 (OG/YE) LH map lamp power circuit | Greater than 10 volts between LH map lamp and ground. Greater than 10,000 ohms between LH map lamp and ground. |
CIRCUIT DESIGNATION/DESCRIPTION
Scheme 16
| Pin Number (s) | Circuit Designation/Description | Normal Condition/Measurement |
|---|---|---|
| 1 (C905) | 31S-LB19 (BK/BU) RH map lamp switch power circuit | Greater than 10,000 ohms between RH map lamp switch and ground with RH map lamp switch and RH map lamp disconnected. Less than 5 ohms between RH map lamp and RH map lamp switch. |
| 1 (C910) | 31S-LB12 (BK/YE) LH map lamp switch power circuit | Greater than 10,000 ohms between LH map lamp switch and ground with LH map lamp switch and LH map lamp disconnected. Less than 5 ohms between LH map lamp and LH map lamp switch. |
| 4 (C905) | 31-LB20 (BK/OG) RH map lamp, demand lamp function, circuit ground | Less than 5 ohms between map lamp switch and ground. |
| 4(C910) | 31-LB13 (BK/BU) LH map lamp, demand lamp function, circuit ground | Less than 5 ohms between map lamp switch and ground. |
| 6 (C905) | 9-LB20 (BN/BU) RH map lamp, interior lamp function, circuit ground | Greater than 10,000 ohms between RH map lamp switch and ground with FEM disconnected. Less than 5 ohms between RH map lamp switch and FEM. |
| 6(C910) | 9-LB13 (BN/RD) LH map lamp, interior lamp function, circuit ground | Greater than 10,000 ohms between LH map lamp switch and ground with FEM disconnected. Less than 5 ohms between LH map lamp switch and FEM. |
CIRCUIT DESIGNATION/DESCRIPTION
Scheme 17
| Pin Number (s) | Circuit Designation/Description | Normal Condition/Measurement |
|---|---|---|
| 1 (C906) | 31-LB23 (BK/WH) RH vanity mirror lamp ground circuit | Less than 5 ohms between RH vanity mirror lamp and ground. |
| 1 (C907) | 31-LB16 (BK/RD) LH vanity mirror lamp ground circuit. | Less than 5 ohms between LH vanity mirror lamp and ground. |
| 2 (C906) | 29S-LB23 (OG/WH) RH vanity mirror lamp power circuit | Greater than 10 volts between RH vanity mirror lamp and ground. Greater than 10,000 ohms between RH vanity mirror lamp and ground. |
| 2 (C907) | 29S-LB16 (OG/GN) LH vanity mirror lamp power circuit | Greater than 10 volts between LH vanity mirror lamp and ground. Greater than 10,000 ohms between LH vanity mirror lamp and ground. |
CIRCUIT DESIGNATION/DESCRIPTION
Scheme 18
| Pin Number (s) | Circuit Designation/Description | Normal Condition/Measurement |
|---|---|---|
| 1 (C9009) | 29S-LB14 (OG) LH rear grab handle lamp power supply circuit | Greater than 10 volts between LH rear grab handle lamp and ground. Greater than 10,000 ohms between LH rear grab handle lamp and ground. |
| 1 (C9010) | 29S-LB21 (OG/BK) RH rear grab handle lamp power supply circuit | Greater than 10 volts between RH rear grab handle lamp and ground. Greater than 10,000 ohms between RH rear grab handle lamp and ground. |
| 2 (C9009) | 31-LB14 (BK) LH rear grab handle lamp, demand lamp function, ground circuit | Less than 5 ohms to ground. |
| 2 (C9010) | 31-LB21 (BK) RH rear grab handle lamp, demand lamp function, ground circuit | Less than 5 ohms to ground. |
| 3 (C9009) | 9-LB14 (BN/BU) LH rear grab handle lamp, interior lamp function, ground circuit | Greater than 10,000 ohms between LH rear grab handle lamp and ground with FEM disconnected. Less than 5 ohms between LH rear grab handle lamp and FEM. |
| 3 (C9010) | 9-LB21 (BN/GN) RH rear grab handle lamp, interior lamp function, ground circuit | Greater than 10,000 ohms between RH rear grab handle lamp and ground with FEM disconnected. Less than 5 ohms between RH rear grab handle lamp and FEM. |
CIRCUIT DESIGNATION/DESCRIPTION
Scheme 19
| Pin Number (s) | Circuit Designation/Description | Normal Condition/Measurement |
|---|---|---|
| 2 | 9-LB1 (BN) interior lamp ground circuit | Greater than 10 volts between auxiliary junction box and ground. Greater than 10,000 ohms between auxiliary junction box and ground. |
CIRCUIT DESIGNATION/DESCRIPTION
Scheme 20
| Pin Number (s) | Circuit Designation/Description | Normal Condition/Measurement |
|---|---|---|
| 3 | 31S-LC3 (BK/BU) interior lamp ground circuit between auxiliary junction box and FEM | Greater than 10,000 ohms between auxiliary junction box and ground with FEM disconnected. Less than 5 ohms between auxiliary junction box and FEM. |
| 7 | 29S-LC34 (OG/YE) LH puddle lamp power supply circuit | Greater than 10,000 ohms between auxiliary junction box and ground with LH front puddle lamp disconnected. Less than 5 ohms between auxiliary junction box and LH front puddle lamp. |
| 15 | 29S-LC5 (OG/GN) LH footwell lamp and LH front puddle lamp power supply circuit | Greater than 10 volts between auxiliary junction box and ground. Greater than 10,000 ohms between auxiliary junction box and ground. Less than 5 ohms between auxiliary junction box and CJB. |
CIRCUIT DESIGNATION/DESCRIPTION
Scheme 21
| Pin Number (s) | Circuit Designation/Description | Normal Condition/Measurement |
|---|---|---|
| 10 | 31S-LC4 (BK/BU) LH and RH footwell lamps ground circuit between LH instrument panel junction block and interior junction box | Greater than 10 volts between interior junction box and ground. Greater than 10,000 ohms between interior junction box and ground with LH instrument panel junction block disconnected. Less than 5 ohms between auxiliary junction box and LH instrument panel junction block. |
| 15 | 29S-LC11 (OG/WH) LH footwell lamp power supply circuit | Greater than 10,000 ohms between auxiliary junction box and ground with LH footwell lamp disconnected. Less than 5 ohms between auxiliary junction box and LH footwell lamp. |
CIRCUIT DESIGNATION/DESCRIPTION
Scheme 22
| Pin Number (s) | Circuit Designation/Description | Normal Condition/Measurement |
|---|---|---|
| 20 | 29S-LC36 (OG/YE) RH front puddle lamp power supply circuit | Greater than 10,000 ohms to ground with RH front puddle lamp disconnected. Less than 5 ohms between CJB and RH front puddle lamp. |
CIRCUIT DESIGNATION/DESCRIPTION
Scheme 23
| Pin Number (s) | Circuit Designation/Description | Normal Condition/Measurement |
|---|---|---|
| 9 | 31S-LC4 (BK/BU) LH and RH footwell lamp ground circuit between LH instrument panel junction block and auxiliary junction box | Greater than 10,000 ohms between LH instrument panel junction box and ground with auxiliary junction box disconnected. Less than 5 ohms between LH instrument panel junction box and auxiliary junction box. |
| 10 | 31S-LC23 (BK/WH) RH footwell lamp ground circuit | Greater than 10,000 ohms between LH instrument panel junction block and ground with RH footwell lamp disconnected. Less than 5 ohms between LH instrument panel junction block and RH footwell lamp. |
| 11 | 31S-LC11 (BK/WH) LH footwell lamp ground circuit | Greater than 10,000 ohms between LH instrument panel junction block and ground with LH footwell lamp disconnected. Less than 5 ohms between LH instrument panel junction block and LH footwell lamp. |
CIRCUIT DESIGNATION/DESCRIPTION
Scheme 24
| Pin Number (s) | Circuit Designation/Description | Normal Condition/Measurement |
|---|---|---|
| 18 | 29S-LC23 (OG/WH) RH footwell lamp power supply circuit | Greater than 10,000 ohms between RH instrument panel junction block and ground with RH footwell lamp disconnected. Less than 5 ohms between RH instrument panel junction block and RH footwell lamp. |
| 19 | 29S-LC1 (OG/BU) glove compartment lamp and RH footwell lamp power supply circuit between the CBJ and RH instrument panel junction block | Greater than 10 volts between RH instrument panel junction block and ground. Greater than 10,000 ohms between RH instrument panel junction block and ground. Less than 5 ohms between RH instrument panel junction block and CJB. |
CIRCUIT DESIGNATION/DESCRIPTION