DTC B1345


B3E090201072W12

DTC B1345

Heated backlite input circuit short to ground

DETECTION CONDITION

Short to GND in wiring harness between PJB and climate control unit (rear window defroster switch)

POSSIBLE CAUSE

• Short to GND in wiring harness between PJB terminal J-04 AD and climate control unit terminal R
• Climate control unit malfunction
• PJB malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION
1
INSPECT CLIMATE CONTROL UNIT CONNECTOR
• Disconnect the climate control unit connector.
• Inspect the climate control unit 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 REAR WINDOW DEFROSTER SWITCH SIGNAL CIRCUIT FOR SHORT TO GND
• Inspect for continuity between PJB terminal J-04 AD (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 CLIMATE CONTROL UNIT
• Inspect the climate control unit.
• Is there any malfunction?
Yes
Replace the climate control unit, then go to the next step.
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.
No
DTC troubleshooting completed.