DTC B2479


id0902j0833000

DTC B2479

Park brake switch circuit open

DETECTION CONDITION

Open circuit in wiring harness between PJB and parking brake switch

POSSIBLE CAUSE

• Open circuit in wiring harness between PJB terminal J-04 AB and parking brake switch terminal A
• Parking brake switch malfunction
• PJB malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION

1
INSPECT PARKING BRAKE SWITCH CONNECTOR
• Turn the ignition switch off.
• Disconnect the parking brake switch connector.
• Inspect the parking brake 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 PARKING BRAKE SWITCH SIGNAL CIRCUIT FOR OPEN CIRCUIT
• Inspect for continuity between PJB terminal J-04 AB (wiring harness-side) and parking brake switch terminal A (wiring harness-side).
• Is there continuity?
Yes
Go to the next step.
No
Repair or replace the wiring harness for a possible open circuit, then go to Step 5.
4
INSPECT PARKING BRAKE SWITCH
• Inspect the parking brake switch.
• Is there any malfunction?
Yes
Replace the parking brake switch, 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.