Reclining Sensor

RECLINING SENSOR

Description

- The reclining motor is installed to the seatback frame.
- 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.


Component Function Check


1. CHECK FUNCTION

1.Turn ignition switch ON.
2.Select "RECLN PULSE" in the "Data monitor" mode using CONSULT.
3.Check reclining sensor signal under the following conditions.





Is the indication normal?
YES- INSPECTION END
NO- Perform diagnosis procedure. Refer to "Diagnosis Procedure" .


Diagnosis Procedure


1. CHECK RECLINING SENSOR SIGNAL

1.Turn ignition switch ON.
2.Check voltage signal between driver seat control unit harness connector and ground using oscilloscope.





Is the inspection result normal?
YES- Replace driver seat control unit. Refer to "Removal and Installation" Removal and Installation.
NO- GO TO 2.

2. CHECK RECLINING SENSOR CIRCUIT

1.Turn ignition switch OFF.
2.Disconnect driver seat control unit and reclining motor connector.
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 connector.
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 connector.
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. Refer to "Removal and Installation" Removal and Installation.
NO- Repair or replace harness.

5. CHECK RECLINING SENSOR GROUND CIRCUIT 1

1.Turn ignition switch OFF.
2.Disconnect driver seat control unit connector.
3.Check continuity between driver seat control unit harness connector and reclining motor harness connector.





Is the inspection result normal?
YES- GO TO 6.
NO- Repair or replace harness.

6. CHECK RECLINING SENSOR GROUND CIRCUIT 2

1.Connect driver seat control unit connector.
2.Check continuity between reclining sensor harness connector and ground.





Is the inspection result normal?
YES- Replace reclining motor. Refer to "Exploded View" Exploded View.
NO- Replace driver seat control unit. Refer to "Removal and Installation" Removal and Installation.