Steering Lock Unit

STEERING LOCK UNIT


Diagnosis Procedure

1.CHECK STEERING LOCK SOLENOID POWER SUPPLY
1. Turn ignition switch OFF.
2. Disconnect steering lock solenoid connector.
3. Check voltage between steering lock solenoid harness connector M15 terminal 1 and ground.





1 - Ground : Battery voltage

Is the inspection result normal?
YES - GO TO 2
NO - Repair or replace steering lock solenoid power supply circuit.
2.CHECK STEERING LOCK SOLENOID GROUND CIRCUIT
Check continuity between steering lock solenoid harness connector M15 terminal 4 and ground.





4 - Ground : Continuity should exist.

Is the inspection result normal?
YES - GO TO 3
NO - Repair or replace the steering lock solenoid ground circuit.
3.CHECK INTELLIGENT KEY UNIT OUTPUT SIGNAL
1. Connect steering lock solenoid connector.
2. Check voltage between Intelligent Key unit harness connector M70 terminal 1 and ground.





1 - Ground : Approx. 5V

Is the inspection result normal?
YES - GO TO 4
NO - GO TO 6
4.CHECK STEERING LOCK COMMUNICATION SIGNAL
Check signal between Intelligent Key unit connector M70 terminal 32 and ground with oscilloscope.










Is the inspection result normal?
YES - GO TO 5
NO - GO TO 6
5.CHECK STEERING LOCK SOLENOID COMMUNICATION CIRCUIT FOR OPEN
1. Disconnect Intelligent Key unit and steering lock solenoid connectors.
2. Check continuity between Intelligent Key unit harness connector (B) M70 terminals 1, 32 and steering lock solenoid connector (A) M15 terminals 2, 3.





1 - 2 : Continuity should exist.
32 - 3 : Continuity should exist.

Is the inspection result normal?
YES - Replace steering lock solenoid.
- After replacing steering lock solenoid, perform registration procedure. Refer to System Description.
NO - Repair or replace harness between steering lock solenoid and Intelligent Key unit.
6.CHECK STEERING LOCK SOLENOID COMMUNICATION CIRCUIT FOR SHORT
1. Disconnect Intelligent Key unit and steering lock solenoid connectors.
2. Check continuity between steering lock solenoid connector M15 terminals 2, 3 and ground.





2 - Ground : Continuity should not exist.
3 - Ground : Continuity should not exist.

Is the inspection result normal?
YES - Replace Intelligent Key unit. Refer to Service and Repair.
NO - Repair or replace harness between steering lock solenoid and Intelligent Key unit.