ICC Brake Switch

ICC BRAKE SWITCH

Component Function Check


1. CHECK ICC BRAKE SWITCH FUNCTION

WITH CONSULT
1.Turn ignition switch ON.
2.Select "BRAKE SW1" in "DATA MONITOR" mode with CONSULT.
3.Check "BRAKE SW1" indication under the following conditions.





WITHOUT CONSULT
1.Turn ignition switch ON.
2.Check the voltage between ECM harness connector terminals as per the following.





Is the inspection result normal?
YES- INSPECTION END
NO- Proceed to "Diagnosis Procedure" .


Diagnosis Procedure


1. CHECK ICC BRAKE SWITCH POWER SUPPLY

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. CHECK ICC BRAKE SWITCH POWER SUPPLY CIRCUIT

1.Turn ignition switch OFF.
2.Disconnect fuse block (J/B) harness connector.
3.Check the continuity between ICC brake switch harness connector and fuse block (J/B) harness connector.





Is the inspection result normal?
Revision: March 20122013 Infiniti JX
YES- Perform the trouble diagnosis for power supply circuit.
NO- Repair or replace error-detected parts.

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 4.
NO- Repair or replace error-detected parts.

4. CHECK ICC BRAKE SWITCH

Check ICC brake switch. Refer to "Component Inspection (ICC Brake Switch)" .
Is the inspection result normal?
YES- Check intermittent incident. Refer to "Intermittent Incident" Intermittent Incident.
NO- Replace ICC brake switch. Refer to "Exploded View" Exploded View.


Component Inspection (ICC Brake Switch)


1. CHECK ICC BRAKE SWITCH-I

1.Turn ignition switch OFF.
2.Disconnect ICC brake switch harness connector.
3.Check the continuity between ICC brake switch terminals under the following conditions.





Is the inspection result normal?
YES- INSPECTION END
NO- GO TO 2.

2. CHECK ICC BRAKE SWITCH-II

1.Adjust ICC brake switch installation. Refer to "Removal and Installation" Removal and Installation.
2.Check the continuity between ICC brake switch terminals under the following conditions.





Is the inspection result normal?
YES- INSPECTION END
NO- Replace ICC brake switch. Refer to "Exploded View" Exploded View.


Component Inspection (ICC Brake Hold Relay)


1. CHECK ICC BRAKE HOLD RELAY

1.Turn ignition switch OFF.
2.Remove ICC brake hold relay.
Revision: March 20122013 Infiniti JX





3.Check the continuity between ICC brake hold relay terminals under the following conditions.





Is the inspection result normal?
YES- INSPECTION END
NO- Replace ICC brake hold relay
Revision: March 20122013 Infiniti JX