Diagnosis Procedure

TILT SENSOR


Description

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





TILT SENSOR


Diagnosis Procedure

1.CHECK TILT 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 TILT SENSOR CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect driver seat control unit and tilt motor connector.
3. Check continuity between driver seat control unit harness connector and tilt 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 TILT SENSOR POWER SUPPLY
1. Connect automatic drive positioner control unit connector.
2. Turn ignition switch ON.
3. Check voltage between tilt motor harness connector and ground.





Is the inspection result normal?
YES - GO TO 5.
NO - GO TO 4.
4.CHECK TILT 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 tilt 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 TILT 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 tilt motor harness connector.





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