1.CHECK BCM INPUT SIGNAL

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

   (+) | (–) | Condition | Voltage (V) (Approx.)
   BCM
   Connector | Terminal
   M123 | 140 | Ground | Shift lever | P or N position | Battery voltage
   Other than above | 0

Is the inspection normal?
YES>>Replace BCM. Refer to Removal and Installation.
NO>>GO TO 2.
2.CHECK PNP SWITCH CIRCUIT

1. Turn ignition switch OFF.
2. Disconnect IPDM E/R connector.
3. Check continuity between IPDM E/R harness connector and BCM harness connector.

   IPDM E/R | BCM | Continuity
   Connector | Terminal | Connector | Terminal
   E5 | 30 | M123 | 140 | Existed

4. Check continuity between IPDM E/R harness connector and ground.

   IPDM E/R | Ground | Continuity
   Connector | Terminal
   E5 | 30 | Not existed

Is the inspection result normal?
YES>>Replace IPDM E/R. Refer to Removal and Installation.
NO>>Repair or replace harness.