1.CHECK INPUT 1 - 5 SYSTEM CIRCUIT FOR OPEN

1. Turn the ignition switch OFF.
2. Disconnect the BCM and combination switch connectors.
3. 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.
2.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.
3.CHECK BCM OUTPUT VOLTAGE

1. Connect the BCM connector.
2. 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.
4.CHECK BCM INPUT SIGNAL

1. Connect the combination switch connector.
2. Turn ON any switch in the system that is malfunctioning.
3. 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.