Diagnosis Procedure

RECLINING SENSOR

Description

- The reclining motor is installed to the seatback assembly.
- The pulse signal is input to the driver seat control unit when the reclining is operated.
- The driver seat control unit counts the pulse and calculates the reclining amount of the seat.

RECLINING SENSOR

Diagnosis Procedure

Regarding Wiring Diagram information, Driver Seat Control Unit.
1. CHECK RECLINING SENSOR SIGNAL
1. Turn ignition switch ON.
2. Read voltage signal between driver seat control unit harness 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 RECLINING SENSOR CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect driver seat control unit and reclining motor.
3. Check continuity between driver seat control unit harness connector and reclining 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 RECLINING SENSOR POWER SUPPLY

1. Connect driver seat control unit.
2. Turn ignition switch ON.
3. Check voltage between reclining motor harness connector and ground.

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

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

Is the inspection result normal?
YES - Replace driver seat control unit. Driver Seat Control Unit.
NO - Repair or replace harness.
5. CHECK RECLINING SENSOR GROUND

1. Turn ignition switch OFF.
2. Check continuity between reclining motor harness connector and ground.

Is the inspection result normal?
YES - Replace reclining motor. With Climate Controlled Seats.
NO - Repair or replace harness.