DTC B2968

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DTC B2968

B3E090200200W01

DTC B2968 | Battery back sounder circuit short to ground
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DETECTION CONDITION | Short to GND in wiring harness between PJB and theft-deterrent siren
POSSIBLE CAUSE | • Short to GND in wiring harness between PJB terminal J-05 R and theft-deterrent siren terminal B • Theft-deterrent siren malfunction • PJB malfunction

Diagnostic procedure

STEP | INSPECTION | ACTION
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1 | INSPECT THEFT-DETERRENT SIREN CONNECTOR • Disconnect the theft-deterrent siren connector. • Inspect the theft-deterrent siren 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 4.
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 4.
No | Go to the next step.
3 | INSPECT THEFT-DETERRENT SIREN SIGNAL CIRCUIT FOR SHORT TO GND • Inspect for continuity between PJB terminal J-05 R (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 the next step.
No | Replace the theft-deterrent siren, then go to the next step. (See THEFT-DETERRENT SIREN REMOVAL/INSTALLATION [4SD], THEFT-DETERRENT SIREN REMOVAL/INSTALLATION [5HB].)
4 | VERIFY TROUBLESHOOTING COMPLETED • Make sure to reconnect all disconnected connectors. • Clear the DTC from the PJB memory using the WDS or equivalent. • Turn the ignition switch to off then ON. • Is the same DTC present? | Yes | Replace the PJB. (See PASSENGER JUNCTION BOX (PJB) REMOVAL/INSTALLATION.)
No | DTC troubleshooting completed.