Parking Brake Switch Signal Circuit

PARKING BRAKE SWITCH SIGNAL CIRCUIT





Description
Transmits the parking brake switch signal to the combination meter.




Component Function Check
1.CHECK UNIFIED METER AND A/C AMP. INPUT SIGNAL
1. Connect the CONSULT-III.
2. Select the "Data Monitor" for the "METER/M&A" and check the "PKB SW" monitor value.

"PKB SW"
Parking brake is applied : On
Parking brake is released : Off

- INSPECTION END




Diagnosis Procedure (A/T models)
1.CHECK COMBINATION METER INPUT SIGNAL
1. Turn ignition switch ON.
2. Check the voltage and waveform between combination meter harness connector terminal and ground.





Is the inspection result normal?
YES - INSPECTION END
NO - GO TO 2.
2.CHECK PARKING BRAKE SWITCH SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect combination meter connector and parking brake switch connector.
3. Check continuity between combination meter harness connector terminal and parking brake switch harness connector terminal.





4. Check continuity between combination meter harness connector terminal and ground.





Is the inspection result normal?
YES - INSPECTION END
NO - Repair harness or connector.




Diagnosis Procedure (M/T models)
1.CHECK COMBINATION METER INPUT SIGNAL
1. Turn ignition switch ON.
2. Check the voltage and waveform between combination meter harness connector terminal and ground.





Is the inspection result normal?
YES - INSPECTION END
NO - GO TO 2.
2.CHECK PARKING BRAKE SWITCH SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect combination meter connector and parking brake switch connector.
3. Check continuity between combination meter harness connector terminal and parking brake switch harness connector terminal.





4. Check continuity between combination meter harness connector terminal and ground.





Is the inspection result normal?
YES - INSPECTION END
NO - Repair harness or connector.




Component Inspection
1.CHECK PARKING BRAKE SWITCH
Check parking brake switch. Parking Brake Switch.
Is the inspection result normal?
YES - INSPECTION END
NO - Replace parking brake switch.