Pinpoint Test E: DTC B1309, B1341, B2474, Or B2475

Locks, Latches and Entry Systems







Pinpoint Tests

Pinpoint Test E: DTC B1309, B1341, B2474, Or B2475

Refer to Wiring Diagram Set 110, Power Door Locks for schematic and connector information. Diagrams By Number

Normal Operation

The Smart Junction Box (SJB) sends voltage signals to the door lock control switches through circuits 1296 (OG/BK) and 1316 (WH/VT) for the lock requests, and through circuits 1297 (YE/RD) and 1317 (DB/LG) for the unlock requests. The door lock control switches receive ground through circuit 1205 (BK). When the lock or unlock switch is pressed, the voltage signal is routed to ground.

B1309-B2475:

This pinpoint test is intended to diagnose the following:

- Wiring, terminals or connectors
- Door lock control switch(es)
- SJB



PINPOINT TEST E: DTC B1309, B1341, B2474, OR B2475

NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

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E1 RETRIEVE THE RECORDED DTCs FROM THE SJB SELF-TEST


- Check for recorded SJB DTCs from the self-test.
- Are DTCs B1309, B1341, B2474 or B2475 recorded?

Yes
GO to E2.

No
GO to Symptom Chart. Symptom Related Diagnostic Procedures

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E2 CHECK THE DOOR LOCK CONTROL SWITCH


- Disconnect: LH Door Lock Control Switch C505 (For DTCs B1309 or B1341).
- Disconnect: RH Door Lock Control Switch C605 (For DTCs B2474 or B2475).
- Repeat the SJB self-test.
- Are DTCs B1309, B1341, B2474, or B2475 retrieved again?

Yes
GO to E3.

No
INSTALL a new door lock control switch. REFER to Door Lock Control Switch Service and Repair. TEST the system for normal operation.

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E3 CHECK THE DOOR LOCK CONTROL SWITCH CIRCUITS FOR A SHORT TO GROUND


- Ignition OFF.
- Disconnect: SJB C2280e.
- Measure the resistance between the LH door lock control switch C505-4 (DTC B1309), circuit 1316 (WH/VT) harness side and ground; or between the RH door lock control switch C605-4 (DTC B2474), circuit 1296 (OG/BK), harness side and ground.




- Measure the resistance between the LH door lock control switch C505-2 (DTC B1341), circuit 1317 (DB/LG) harness side and ground; or between the RH door lock control switch C605-2 (DTC B2475), circuit 1297 (YE/RD), harness side and ground.




- Are the resistances greater than 10,000 ohms?

Yes
GO to E4.

No
REPAIR the circuit in question. CLEAR the DTCs. REPEAT the self-test.

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E4 CHECK FOR CORRECT SJB OPERATION


- Disconnect all the SJB connectors.
- Check for:
- corrosion
- damaged pins
- 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. TEST the system for normal operation.

No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.

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