DTC B2574

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DTC B2574

B3E090201072W43

DTC B2574 | Driver door lock switch short to ground
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DETECTION CONDITION | Short to GND in wiring harness between PJB and driver-side door lock-link switch
POSSIBLE CAUSE | • Short to GND in wiring harness between PJB terminal J-06 AC and front door latch and lock actuator (driver-side) terminal J • Front door latch and lock actuator (driver-side) malfunction • PJB malfunction

Diagnostic procedure

STEP | INSPECTION | ACTION
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1

INSPECT FRONT DOOR LATCH AND LOCK ACTUATOR (DRIVER-SIDE) CONNECTOR
• Disconnect the front door latch and lock actuator (driver-side) connector.
• Inspect the front door latch and lock actuator (driver-side) connector terminals for poor connection (such as damaged/pulled-out pins, and corrosion).
• Is there any malfunction?

Yes

Repair or replace the terminal, then go to Step 5.

No | Go to the next step.
2 | INSPECT PJB CONNECTOR • Disconnect the PJB connector. • Inspect the PJB connector terminals for poor connection (such as damaged/pulled-out pins, and corrosion). • Is there any malfunction? | Yes | Repair or replace the terminal, then go to Step 5.
No | Go to the next step.
3 | INSPECT FRONT DOOR LATCH AND LOCK ACTUATOR (DRIVER-SIDE) SIGNAL CIRCUIT FOR SHORT TO GND • Inspect for continuity between PJB terminal J-06 AC (wiring harness-side) and body GND. • Is there continuity? | Yes | Repair or replace the wiring harness for a possible short to GND, then go to Step 5.
No | Go to the next step.
4 | INSPECT FRONT DOOR LATCH AND LOCK ACTUATOR (DRIVER-SIDE) • Inspect the front door latch and lock actuator (driver-side). (See FRONT DOOR LATCH AND LOCK ACTUATOR INSPECTION.) • Is there any malfunction? | Yes | Replace the front door latch and lock actuator (driver-side), then go to the next step. (See FRONT DOOR LATCH AND LOCK ACTUATOR REMOVAL/INSTALLATION.)
No | Go to the next step.

5

VERIFY TROUBLESHOOTING COMPLETED
• Make sure to reconnect all disconnected connectors.
• Clear the DTC from the PJB memory using the WDS or equivalent.
• Perform the self-test.
(See PJB SELF-TEST.)
• Is the same DTC present?

Yes

Replace the PJB.
(See PASSENGER JUNCTION BOX (PJB) REMOVAL/INSTALLATION.)

No | DTC troubleshooting completed.