Diagnosis Procedure

RECLINING SENSOR


Description

- The reclining motor is installed to the seatback assembly.
- The pulse signal is inputted 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

1. CHECK RECLINING SENSOR SIGNAL





1. Turn ignition switch OFF.
2. Read voltage signal between driver seat control unit harness connector and ground with oscilloscope.





Is the inspection result normal?
YES - GO TO 4
NO - GO TO 2
2. CHECK RECLINING SENSOR CIRCUIT





1. Disconnect driver seat control unit and reclining motor LH.
2. Check continuity between driver seat control unit harness connector and reclining motor LH harness connector.





3. 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 SEAT OPERATION
1. Connect driver seat control unit and reclining motor LH.
2. Check seat operation (except reclining operation) with memory function.
Is the operation normal?
YES - Replace reclining motor LH. (Built in seatback assembly). Refer to Disassembly and Assembly.
NO - Replace driver seat control unit. Refer to Driver Seat Control Unit.
4. CHECK INTERMITTENT INCIDENT
Refer to Intermittent Incident.
Is the inspection result normal?
YES - Replace driver seat control unit. Refer to Driver Seat Control Unit.
NO - Repair or replace the malfunctioning part.