Cruise Control: Testing and Inspection

ASCD BRAKE SWITCH

Component Function Check


1. CHECK ASCD BRAKE SWITCH FUNCTION

With CONSULT
1.Turn ignition switch ON.
2.Select "BRAKE SW1" in "DATA MONITOR" mode of "ENGINE" using CONSULT.
3.Check "BRAKE SW1" indication as per 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 ASCD BRAKE SWITCH POWER SUPPLY

1.Turn ignition switch OFF.
2.Disconnect ASCD brake switch harness connector.
3.Turn ignition switch ON.
4.Check the voltage between ASCD brake switch harness connector and ground.





Is the inspection result normal?
YES- GO TO 2.
NO- Perform the trouble diagnosis for power supply circuit.

2. CHECK ASCD BRAKE SWITCH INPUT SIGNAL CIRCUIT

1.Turn ignition switch OFF.
2.Disconnect ECM harness connector.
3.Check the continuity between ASCD brake switch harness connector and ECM harness connector.





4.Also check harness for short to ground and to power.
Is the inspection result normal?
YES- GO TO 3.
NO- Repair or replace error-detected parts.

3. CHECK ASCD BRAKE SWITCH

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


Component Inspection (ASCD Brake Switch)


1. CHECK ASCD BRAKE PEDAL POSITION SWITCH-I

1.Turn ignition switch OFF.
2.Disconnect ASCD brake switch harness connector.
3.Check the continuity between ASCD brake switch terminals as per the following conditions.





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

2. CHECK ASCD BRAKE SWITCH-II

1.Adjust ASCD brake switch installation. Refer to "Inspection and Adjustment" Adjustments.
2.Check the continuity between ASCD brake switch terminals as per the following conditions.





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