DTC B1506

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DTC B1506

B3E090201072W17

DTC B1506 | Light turn signal right circuit short to ground
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DETECTION CONDITION | Short to GND in wiring harness between PJB and turn switch
POSSIBLE CAUSE | • Short to GND in wiring harness between PJB terminal J-04 O and light switch terminal L • Short to GND in wiring harness between PJB terminal J-04 K and light switch terminal G • Light switch malfunction • PJB malfunction

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 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 LIGHT SWITCH SIGNAL CIRCUIT FOR SHORT TO GND
• Inspect for continuity between following terminals:

  - PJB terminal J-04 O (wiring harness-side) - body GND
  - PJB terminal J-04 K (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 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.