Inspection and Verification
- Verify the customer concern.
- Visually inspect for obvious signs of mechanical or electrical damage VISUAL INSPECTION CHART Mechanical Electrical Interior lamps Map lamps Cargo lamp Door ajar switches (part of the door latches) Liftgate ajar switch (part of the liftgate latch) Liftgate glass ajar switch (part of the liftgate window latch) Vanity lamps Battery junction box (BJB) fuse(s): 2 (25A) 3 (25A) Smart junction box (SJB) Wiring harness Loose or corroded connectors Interior lamp Map lamp Cargo lamp Vanity lamps
- 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 (DLC) 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: CAN or UBP circuits fault; all electronic control units no response/not equipped, refer to «MODULE COMMUNICATIONS NETWORK»(ref-232245) . No response/not equipped for SJB, refer to «MULTIFUNCTION ELECTRONIC MODULES»(ref-232247) . System passed, retrieve and record the continuous diagnostic trouble codes (DTCs), erase the continuous DTCs, and carry out the self-test diagnostics for the SJB.
- If the DTCs retrieved are related to the concern, go to the «SMART JUNCTION BOX (SJB) DIAGNOSTIC TROUBLE CODE (DTC) INDEX»(ref-232287-S00963612672006051600000) .
- If no DTCs related to the concern are retrieved, GO to «SYMPTOM CHART»(ref-232287-S12129622732006051600000) .
Smart Junction Box (SJB) Diagnostic Trouble Code (DTC) Index
| DTC | Description | Source | Action |
|---|---|---|---|
| B1314 | Battery Saver Relay Coil Circuit Open | SJB | GO to PINPOINT TEST A . |
| B1316 | Battery Saver Relay Coil Shorted To Ground | SJB | GO to PINPOINT TEST A . |
| B1317 | Battery Voltage High | SJB | CLEAR the DTCs. REPEAT the self-test. If DTC B1317 is retrieved again, REFER to CHARGING SYSTEM - GENERAL INFORMATION . |
| B1318 | Battery Voltage Low | SJB | CLEAR the DTCs. REPEAT the self-test. If DTC B1318 is retrieved again, REFER to CHARGING SYSTEM - GENERAL INFORMATION . |
| B1319 | Driver Door Ajar Circuit Failure | SJB | GO to PINPOINT TEST B . |
| B1327 | Passenger Door Ajar Circuit Failure | SJB | GO to PINPOINT TEST B . |
| B1335 | Door Ajar RR Circuit Failure | SJB | GO to PINPOINT TEST B . |
| B1342 | ECU Is Defective | SJB | CLEAR the DTCs. REPEAT the self-test. If DTC B1342 is retrieved again, INSTALL a new SJB. REFER to MULTIFUNCTION ELECTRONIC MODULES . |
| B1372 | Illuminated Entry Relay Circuit Open | SJB | GO to PINPOINT TEST A . |
| B1374 | Illuminated Entry Relay Short To Ground | SJB | GO to PINPOINT TEST B |
| B1474 | Battery Saver-Interior Lighting Power Circuit Short To Battery | SJB | GO to PINPOINT TEST G |
| B1571 | Door Ajar LR Circuit Failure | SJB | GO to PINPOINT TEST B . |
| B2077 | Liftgate Ajar Switch Circuit Failure | SJB | GO to PINPOINT TEST B . |
| B2141 | NVM Configuration Failure | SJB | REFER to MODULE CONFIGURATION . |
| B2477 | Module Configuration Failure | SJB | REFER to MODULE CONFIGURATION . |
| B2902 | Rear Window Ajar Switch Circuit Failure | SJB | GO to PINPOINT TEST B . |
| All other DTCs | SJB | REFER to MULTIFUNCTION ELECTRONIC MODULES . |
SMART JUNCTION BOX (SJB) DIAGNOSTIC TROUBLE CODE (DTC) INDEX
Symptom Chart
| Condition | Possible Sources | Action |
|---|---|---|
| No communication with the smart junction box (SJB) | Circuitry SJB | REFER to MULTIFUNCTION ELECTRONIC MODULES . |
| The interior lamps are inoperative | Circuitry Interior lamps Smart junction box (SJB) | GO to PINPOINT TEST A . |
| The interior lamps stay on continuously | Circuitry Door ajar switches Liftgate ajar switch Liftgate glass ajar switch Smart junction box (SJB) | GO to PINPOINT TEST B . |
| The interior lamps do not turn on with one door open | Circuitry Door ajar switch Smart junction box (SJB) | GO to PINPOINT TEST C . |
| The illuminated entry is inoperative when using the remote keyless entry (RKE) transmitter | RKE system Smart junction box (SJB) | GO to PINPOINT TEST F . |
| The demand lighting is inoperative | Circuitry Smart junction box (SJB) | GO to PINPOINT TEST D . |
| An individual interior lamp is inoperative | Circuitry Interior lamp Cargo lamp | GO to PINPOINT TEST E . |
| An individual demand lamp is inoperative | Circuitry | GO to PINPOINT TEST D . |
| The battery saver does not deactivate after time-out | Smart junction box (SJB) | GO to PINPOINT TEST G . |
SYMPTOM CHART
PINPOINT TEST C: THE INTERIOR LAMPS DO NOT TURN ON WITH ONE DOOR OPEN
- C1 CHECK THE SJB DTCS FROM BOTH CONTINUOUS AND ON-DEMAND SELF-TESTS Verify all the doors and liftgate are closed. Use the recorded results from the SJB continuous and on-demand self-test. Are any DTCs recorded? Yes : REFER to the «SMART JUNCTION BOX (SJB) DIAGNOSTIC TROUBLE CODE (DTC) INDEX»(ref-232287-S00963612672006051600000) . No : GO to C2.
- C2 CHECK THE DOOR AJAR PIDS Key in ON position. Enter the following diagnostic mode on the diagnostic tool: Diagnostic PID Data Monitor. Check the ajar PIDs while opening and closing all the doors, liftgate and liftgate glass. Do all the door ajar and liftgate ajar PID values agree with the door and liftgate positions? Yes : GO to C5 . No : GO to C3.
- C3 CHECK DOOR AJAR SWITCH OPERATION Disconnect the inoperative door ajar switch connector. Measure the resistance between the inoperative door ajar switch connector pins, component side, while toggling the switch open and closed. Refer to «CONNECTOR PINOUTS REFERENCE»(ref-232287-S31604744412006051600000) for location and connector. CONNECTOR PINOUTS REFERENCE Location Connector and Pin Connector and Pin LH front door ajar switch C525-8 C525-6 RH front door ajar switch C609-8 C609-6 LH rear door ajar switch C704-8 C704-6 RH rear door ajar switch C804-8 C804-6 Liftgate ajar switch C478-1 C478-2 Liftgate glass ajar switch C479-1 C479-2 Is the resistance less than 5 ohms when the switch is closed and greater than 10,000 ohms when the switch is open? Yes : GO to C4. No : INSTALL a new door latch in question. REFER to «HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS»(ref-232261) . CLEAR the DTCs. REPEAT the self-test.
- C4 CHECK DOOR AJAR SWITCH CIRCUITS FOR A SHORT TO GROUND Disconnect: SJB C2280c or SJB C2280d. Measure the resistance between the inoperative door ajar switch connector, harness side and ground. Refer to «CONNECTOR PINOUTS REFERENCE»(ref-232287-S20347515442006051600000) for location and connector. CONNECTOR PINOUTS REFERENCE Location Connector Circuit LH front door ajar switch C525-8 1312 (LG/BK) RH front door ajar switch C609-8 867 (DB) LH rear door ajar switch C704-8 760 (PK/LB) RH rear door ajar switch C804-8 760 (PK/LB) Liftgate ajar switch C478-1 701 (LB/BK) Liftgate glass ajar switch C479-1 700 (WH/VT) Is the resistance greater than 10,000 ohms? Yes : GO to C5. No : REPAIR the circuit in question. CLEAR the DTCs. REPEAT the self-test.
- C5 CHECK FOR CORRECT SJB OPERATION Disconnect all SJB connectors. Check for: corrosion pushed-out pins Connect all SJB connectors and make sure they seat correctly. Operate the system and verify the concern is still present. Is the concern still present? Yes : INSTALL a new SJB. REFER to «MULTIFUNCTION ELECTRONIC MODULES»(ref-232247) . CLEAR the DTCs. REPEAT the self-test. No : The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.
PINPOINT TEST D: THE DEMAND LIGHTING IS INOPERATIVE
- D1 CHECK CIRCUIT 1005 (VT/OG) FOR VOLTAGE Disconnect the inoperative demand lamp connector. Key in ON position. Key in OFF position. Turn the inoperative demand lamp switch on. Measure the voltage between the inoperative demand lamp connector, circuit 1005 (VT/OG), harness side and ground. Refer to «CONNECTOR PINOUTS REFERENCE»(ref-232287-S01522078502006051600000) for connector and pin number. CONNECTOR PINOUTS REFERENCE Location Connector-Pin RH vanity mirror lamp C906-1 LH vanity mirror lamp C907-1 Cargo lamp C926b-1 Interior/map lamp C931-1 Are the voltages greater than 10 volts? Yes : GO to D2. No : REPAIR the circuit in question. CLEAR the DTCs. REPEAT the self-test.
- D2 CHECK CIRCUIT 57 (BK) Measure the resistance between the inoperative demand lamp connector, circuit 57 (BK), harness side and ground. Refer to «CONNECTOR PINOUTS REFERENCE»(ref-232287-S21489317612006051600000) for connector and pin number. CONNECTOR PINOUTS REFERENCE Location Connector-Pin RH vanity mirror lamp C906-2 LH vanity mirror lamp C907-2 Cargo lamp C926a-1 Interior/map lamp C931-2 Are the resistances less than 5 ohms? Yes : INSTALL a new lamp in question. CLEAR the DTCs. REPEAT the self-test. No : REPAIR the circuit in question. CLEAR the DTCs. REPEAT the self-test.
PINPOINT TEST E: AN INDIVIDUAL INTERIOR LAMP IS INOPERATIVE
- E1 CHECK LAMP ASSEMBLY Disconnect the inoperative interior lamp connector. Key in ON position. Key in OFF position. Open the driver door. Measure the voltage between the inoperative interior lamp connector pins, harness side. Refer to «CONNECTOR PINOUTS REFERENCE»(ref-232287-S21928621342006051600000) for connector, circuit and pin number. CONNECTOR PINOUTS REFERENCE Location Connector and Circuit Connector and Circuit Interior lamp C918-1 1005 (VT/OG) C918-2 401 (PK) Cargo lamp C926b-1 1005 (VT/OG) C926a-3 401 (PK) Interior/map lamp C931-1 1005 (VT/OG) C931-3 401 (PK) Are the voltages greater than 10 volts? Yes : INSTALL a new lamp in question. CLEAR the DTCs. REPEAT the self-test. No : GO to E2.
- E2 CHECK CIRCUIT 1005 (VT/OG) FOR VOLTAGE Measure the voltage between the inoperative interior lamp connector, circuit 1005 (VT/OG), harness side and ground. Refer to «CONNECTOR PINOUTS REFERENCE»(ref-232287-S34512421762006051600000) for connector and pin number. CONNECTOR PINOUTS REFERENCE Location Connector Interior lamp C918-1 Cargo lamp C926b-1 Interior/map lamp C931-1 Are the voltages greater than 10 volts? Yes : REPAIR circuit 401 (PK) of the lamp in question. CLEAR the DTCs. REPEAT the self-test. No : REPAIR circuit 1005 (VT/OG) of the lamp in question. CLEAR the DTCs. REPEAT the self-test.
PINPOINT TEST F: THE ILLUMINATED ENTRY IS INOPERATIVE WHEN USING THE REMOTE KEYLESS ENTRY (RKE) TRANSMITTER
- F1 CHECK FOR CORRECT RKE OPERATION Using the RKE transmitter, lock and unlock the doors. Do the doors lock and unlock? Yes : GO to F2. No : REFER to «HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS»(ref-232261) to continue diagnosis of the RKE system.
- F2 CHECK FOR CORRECT SJB OPERATION Disconnect all the SJB connectors. Check for: corrosion pushed-out pins Connect all the SJB connectors and make sure they seat correctly. Operate the system and verify the concern is still present. Is the concern still present? Yes : INSTALL a new SJB. REFER to «MULTIFUNCTION ELECTRONIC MODULES»(ref-232247) . CLEAR the DTCs. REPEAT the self-test. No : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.