Front Door Lock Assembly LH (Door Unlock Sensor) Check

INTELLIGENT KEY SYSTEM

Front Door Lock Assembly LH (Door Unlock Sensor) Check


1. CHECK UNLOCK SENSOR POWER SUPPLY

Check voltage between Intelligent Key unit connector terminal 28 and ground.










OK or NG
OK- front door lock assembly LH (door unlock sensor) is OK.
NG- GO TO 2.

2. CHECK UNLOCK SENSOR CIRCUIT

1.Turn ignition switch OFF.





2.Disconnect Intelligent Key unit and front door lock assembly LH
(door unlock sensor) connector.
3.Check continuity between Intelligent Key unit harness connector
M42 (A) terminal 28 and front door lock assembly LH (door unlock sensor) harness connector D9 (B) terminal 3.
28 - 3: Continuity should exist.
4.Check continuity between Intelligent Key unit harness connector
M42 (A) terminal 28 and ground.

28 - Ground: Continuity should not exist.
OK or NG
OK- GO TO 3.
NG- Repair or replace harness between Intelligent Key unit and front door lock assembly LH (door unlock sensor).

3. CHECK UNLOCK SENSOR GROUND CIRCUIT

Check continuity between front door lock assembly LH (door unlock sensor) harness connector D9 terminal 4 and ground.





4 - Ground: Continuity should exist.
OK or NG
OK- GO TO 4.
NG- Repair or replace harness.

4. CHECK INTELLIGENT KEY UNIT OUTPUT SIGNAL

1.Connect Intelligent Key unit harness connector.
2.Check voltage between Intelligent Key unit harness connector M42 terminal 28 and ground.





28 - Ground: Approx. 5V
OK or NG
OK- Replace front door lock assembly LH (door unlock sensor).
NG- Replace Intelligent Key unit. Service and Repair .