Diagnosis Procedure

TELESCOPIC SENSOR

Description

- The telescopic sensor is installed to the steering column assembly.
- The pulse signal is input 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

Regarding Wiring Diagram information, Driver Seat Control Unit.
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. Driver Seat Control Unit.
NO - GO TO 2
2. CHECK TELESCOPIC SENSOR CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect driver seat control unit and telescopic motor.
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.
3. CHECK TELESCOPIC SENSOR POWER SUPPLY

1. Connect driver seat control unit.
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.
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. Automatic Drive Positioner Control Unit.
NO - Repair or replace harness.
5. CHECK TELESCOPIC SENSOR GROUND CIRCUIT

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