Diagnosis Procedure

TELESCOPIC SENSOR


Description

- The telescopic sensor is installed to the steering column assembly.
- The pulse signal is inputted to the driver seat control unit when telescopic is performed.
- The driver seat control unit counts the pulse and calculates the telescopic amount of the steering column.





TELESCOPIC SENSOR


Diagnosis Procedure

1.CHECK TELESCOPIC SENSOR SIGNAL
1. Turn ignition switch ON.
2. Check voltage signal between driver seat control unit connector and ground with oscilloscope.





Is the inspection result normal?
YES - Replace driver seat control unit. Removal and Installation.
NO - GO TO 2.
2.CHECK TELESCOPIC SENSOR CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect driver seat control unit and telescopic motor connector.
3. Check continuity between driver seat control unit harness connector and telescopic motor harness connector.





4. Check continuity between driver seat control unit harness connector and ground.





Is the inspection result normal?
YES - GO TO 3.
NO - Repair or replace harness or connector.
3.CHECK TELESCOPIC SENSOR POWER SUPPLY
1. Connect driver seat control unit connector.
2. Turn ignition switch ON.
3. Check voltage between telescopic motor harness connector and ground.





Is the inspection result normal?
YES - GO TO 5.
NO - GO TO 4.
4.CHECK TELESCOPIC SENSOR POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect automatic drive positioner control unit connector.
3. Check continuity between automatic drive positioner control unit harness connector and telescopic motor harness connector.





4. Check continuity between automatic drive positioner control unit harness connector and ground.





Is the inspection result normal?
YES - Replace automatic drive positioner control unit. Removal and Replacement.
NO - Repair or replace harness or connector.
5.CHECK TELESCOPIC SENSOR GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect automatic drive positioner control unit connector.
3. Check continuity between automatic drive positioner control unit harness connector and telescopic motor harness connector.





Is the inspection result normal?
YES - Replace telescopic motor.
NO - Repair or replace harness or connector.