DTC B1607

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DTC B1607

B3E090201072W22

DTC B1607 | Key illumination circuit short to battery
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DETECTION CONDITION | Short to power supply in wiring harness between PJB and key illumination
POSSIBLE CAUSE | • Short to power supply in wiring harness between PJB terminal J-03 AB and key illumination terminal A • Ignition key illumination malfunction • PJB malfunction

Diagnostic procedure

STEP | INSPECTION | ACTION
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1 | INSPECT KEY ILLUMINATION CONNECTOR • Turn the ignition switch off. • Disconnect the key illumination connector. • Inspect the key illumination 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 KEY ILLUMINATION SIGNAL CIRCUIT FOR SHORT TO POWER SUPPLY • Turn the ignition switch to the ON position (Engine off). • Measure the voltage between PJB terminal J-03 AB (wiring harness-side) and body GND. • Is the voltage B+? | Yes | Repair or replace the wiring harness for a possible short to power supply, then go to Step 5.
No | Go to the next step.
4 | INSPECT KEY ILLUMINATION • Inspect the key illumination. • Is there any malfunction? | Yes | Replace the key illumination, then go to the next step. (See IGNITION KEY ILLUMINATION BULB 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.