Diagnosis Procedure

ICC BRAKE SWITCH


Diagnosis Procedure

1.CHECK ICC BRAKE SWITCH POWER SUPPLY CIRCUIT-I
1. Turn ignition switch OFF.
2. Disconnect ICC brake switch harness connector.
3. Turn ignition switch ON.





4. Check the voltage between ICC brake switch harness connector and ground.





Is the inspection result normal?
YES - GO TO 3.
NO - GO TO 2.
2.DETECT MALFUNCTIONING PART
Check the following.
- Fuse block (J/B) connector E102
- 10 A fuse (No. 12)
- Harness for open or short between ICC brake switch and fuse
Repair open circuit short to ground or short to power in harness or connectors.
3.CHECK ICC BRAKE SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check the continuity between ICC brake switch harness connector and ECM harness connector.





4. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES - GO TO 5.
NO - GO TO 4.
4.DETECT MALFUNCTIONING PART
Check the following.
- Harness connectors E108, M15
- Harness for open or short between ICC brake switch and ECM
Repair open circuit, short to ground or short to power in harness or connectors.
5.CHECK ICC BRAKE SWITCH
Refer to Component Inspection (ICC Brake Switch).
Is the inspection result normal?
YES - GO TO 6.
NO - Replace ICC brake switch.
6.CHECK INTERMITTENT INCIDENT
Refer to Description.
INSPECTION END