COMBINATION SWITCH INPUT CIRCUIT

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

   
   

YES>>GO TO 2.

NO>>Repair the harnesses or connectors.

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

YES>>Repair the harnesses or connectors.

NO>>GO TO 3.

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

   
   

YES>>GO TO 4.

NO>>Replace BCM. Refer to Exploded View.

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

   
   

YES>>Replace BCM. Refer to Exploded View

NO>>Replace the combination switch.