1.CHECK STEERING LOCK UNIT POWER SUPPLY

1. Turn ignition switch OFF.
2. Disconnect steering lock unit connector.
3. Check voltage between steering lock unit harness connector and ground.

   (+) | (–) | Condition | Voltage (V) (Approx.)
   Steering lock unit
   Connector | Terminal
   M40 | 7 | Ground | Ignition switch | OFF or ACC | Battery voltage
   ON | 0

Is the inspection normal?
YES>>GO TO 3.
NO>>GO TO 2.
2.CHECK STEERING LOCK UNIT POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.
2. Disconnect BCM connector.
3. Check continuity between steering lock unit harness connector and BCM harness connector.

   Steering lock unit | BCM | Continuity
   Connector | Terminal | Connector | Terminal
   M40 | 7 | M122 | 106 | Existed

4. Check continuity between steering lock unit harness connector and ground.

   Steering lock unit | Ground | Continuity
   Connector | Terminal
   M40 | 7 | Not existed

Is the inspection normal?
YES>>Replace BCM. Refer to Removal and Installation.
NO>>Repair or replace harness.
3.CHECK STEERING LOCK UNIT GROUND CIRCUIT

1. Turn ignition switch OFF.
2. Check continuity between steering lock unit and ground.

   Steering lock unit | Ground | Continuity
   Connector | Terminal
   M40 | 5 | Existed
   6

Is the inspection normal?
YES>>GO TO 4.
NO>>Repair or replace harness.
4.CHECK STEERING LOCK UNIT COMMUNICATION SIGNAL

1. Connect steering lock unit connector.
2. Read voltage signal between steering lock unit harness connector and ground.

   (+) | (–) | Condition | Voltage (V) (Approx.)
   Steering lock unit
   Connector | Terminal
   M40 | 2 | Ground | Steering lock unit | Lock status | Battery voltage
   Lock or unlock |
   For 15 seconds after unlock | Battery voltage
   15 seconds or later after unlock. | 0

   Steering is locked | : Opening the door when ignition switch is ON to OFF.
   Steering is unlocked | : Ignition switch is OFF to ACC.

Is the inspection normal?
YES>>Replace steering lock unit.
NO>>GO TO 5.
5.CHECK STEERING LOCK UNIT COMMUNICATION CIRCUIT

1. Turn ignition switch OFF.
2. Disconnect steering lock unit and BCM connector.
3. Check continuity between steering lock unit harness connector and BCM harness connector.

   Steering lock unit | BCM | Continuity
   Connector | Terminal | Connector | Terminal
   M40 | 2 | M122 | 111 | Existed

4. Check continuity between steering lock unit harness connector and ground.

   Steering lock unit | Ground | Continuity
   Connector | Terminal
   M40 | 2 | Not existed

Is the inspection normal?
YES>>GO TO 6.
NO>>Repair or replace harness.
6.CHECK INTERMITTENT INCIDENT
Refer to Intermittent Incident.
>>INSPECTION END