Diagnosis Procedure
- CHECK INPUT 1 - 5 SYSTEM CIRCUIT FOR OPEN
- Turn the ignition switch OFF.
- Disconnect the BCM and combination switch connectors.
- Check continuity between BCM harness connector and combination switch harness connector.
System BCM Combination switch Continuity Connector Terminal Connector Terminal INPUT 1 M122 107 M33 11 Existed INPUT 2 109 9 INPUT 3 88 7 INPUT 4 108 10 INPUT 5 87 13 Does continuity exist?
YES: GO TO 2.
NO: Repair the harnesses or connectors.
- CHECK INPUT 1 - 5 SYSTEM CIRCUIT FOR SHORT
Check for continuity between BCM harness connector and ground.
System BCM Ground Continuity Connector Terminal INPUT 1 M122 107 Not existed INPUT 2 109 INPUT 3 88 INPUT 4 108 INPUT 5 87 Does continuity exist?
YES: Repair the harnesses or connectors.
NO: GO TO 3.
- CHECK BCM OUTPUT VOLTAGE
- Connect the BCM connector.
- Check voltage between BCM harness connector and ground.
System Terminals Voltage (Approx.) (+) (-) BCM Ground Connector Terminal INPUT 1 M122 107 Refer to "REFERENCE VALUE ". INPUT 2 109 INPUT 3 88 INPUT 4 108 INPUT 5 87 Is the measurement value normal?
YES: GO TO 4.
NO: Replace BCM. Refer to "EXPLODED VIEW ".
- CHECK BCM INPUT SIGNAL
- Connect the combination switch connector.
- Turn ON any switch in the system that is malfunctioning.
- Check voltage between BCM harness connector and ground.
System Terminals Voltage (Approx.) (+) (-) BCM Ground Connector Terminal INPUT 1 M122 107 Refer to "REFERENCE VALUE ". INPUT 2 109 INPUT 3 88 INPUT 4 108 INPUT 5 87 Is the measurement value normal when any of the switches is turned ON?
YES: Replace BCM. Refer to "EXPLODED VIEW ".
NO: Replace the combination switch.