1.CHECK OUTPUT 1 - 5 SYSTEM CIRCUIT FOR OPEN

1. Turn the ignition switch OFF.
2. Disconnect the BCM and combination switch connectors.
   NOTE：
   BCM connector disconnects M123 only.
3. Check continuity between BCM harness connector and combination switch harness connector.

   System | BCM | Combination switch | Continuity
   Connector | Terminal | Connector | Terminal
   OUTPUT 1 | M123 | 143 | M33 | 12 | Existed
   OUTPUT 2 | 144 | 14
   OUTPUT 3 | 145 | 5
   OUTPUT 4 | 146 | 2
   OUTPUT 5 | 142 | 8

Does continuity exist?
YES>>GO TO 2.
NO>>Repair the harnesses or connectors.
2.CHECK OUTPUT 1 - 5 SYSTEM CIRCUIT FOR SHORT
Check for continuity between BCM harness connector and ground.

System | BCM | Ground | Continuity
Connector | Terminal
OUTPUT 1 | M123 | 143 | Not existed
OUTPUT 2 | 144
OUTPUT 3 | 145
OUTPUT 4 | 146
OUTPUT 5 | 142

Does continuity exist?
YES>>Repair the harnesses or connectors.
NO>>GO TO 3.
3.CHECK COMBINATION SWITCH OUTPUT VOLTAGE

1. Connect the combination switch connector.
2. Turn ON any switch in the system that is malfunctioning.
3. Check voltage between combination switch harness connector and ground.

   System | Terminals | Value (Approx.)
   (+) | (−)
   Combination switch | Ground
   Connector | Terminal
   OUTPUT 1 | M33 | 12 | 1.4 V
   OUTPUT 2 | 14
   OUTPUT 3 | 5
   OUTPUT 4 | 2
   OUTPUT 5 | 8

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.