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DTC B1506

id0902j0831600

DTC B1506 | turn signal right circuit short to ground
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DETECTION CONDITION | Short to GND in wiring harness between BCM and turn switch
POSSIBLE CAUSE | • Light switch malfunction • BCM malfunction European (L.H.D. U.K.), General (L.H.D.) specs. • Short to GND in wiring harness between BCM terminal 4C and light switch terminal A (LH) • Short to GND in wiring harness between BCM terminal 4E and light switch terminal E (RH) Australian, General (R.H.D.) specs. • Short to GND in wiring harness between BCM terminal 4C and light switch terminal M (LH) • Short to GND in wiring harness between BCM terminal 4E and light switch terminal Q (RH)

Diagnostic procedure

STEP | INSPECTION | ACTION
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1 | INSPECT LIGHT SWITCH CONNECTOR • Disconnect the light switch connector. • Inspect the light switch 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 BCM CONNECTOR • Disconnect the BCM connector. • Inspect the BCM 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 LIGHT SWITCH SIGNAL CIRCUIT FOR SHORT TO GND • Inspect for continuity between following terminals: - BCM terminal 4C (wiring harness-side) - body GND - BCM terminal 4E (wiring harness-side) - 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 LIGHT SWITCH • Inspect the light switch. • Is there any malfunction? | Yes | Replace the light switch, then go to the next step. (See LIGHT SWITCH INSPECTION.)
No | Go to the next step.
5 | VERIFY TROUBLESHOOTING COMPLETED • Make sure to reconnect all disconnected connectors. • Clear the DTC from the BCM memory using the WDS or equivalent. • Is the same DTC present? | Yes | Replace the BCM. (See BODY CONTROL MODULE (BCM) REMOVAL/INSTALLATION.)
No | DTC troubleshooting completed.