Reclining Motor Circuit

SEAT: REAR POWER SEAT CONTROL SYSTEM: Reclining Motor Circuit
- Reclining Motor Circuit

DESCRIPTION

The fold seat control ECU receives a switch operation signal from the rear power seat switch and the fold seat switch, and activates the reclining motor. At this time, the Hall IC (seatback position sensor) detects the actuation of the seatback and sends a seatback actuation signal to the fold seat control ECU. The fold seat control ECU uses signals from the Hall IC (seatback position sensor) to detect if an object is caught or if any other abnormal condition has occurred.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK FOLD SEAT CONTROL ECU

(a) Remove the fold seat control ECU with its connectors still connected Removal.





(b) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

LH Side
RH Side










Text in Illustration





(c) Reinstall the fold seat control ECU.

NG -- CHECK HARNESS AND CONNECTOR (FOLD SEAT CONTROL ECU - RECLINING MOTOR)

OK -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Rear Power Seat Control System

2. CHECK HARNESS AND CONNECTOR (FOLD SEAT CONTROL ECU - RECLINING MOTOR)

(a) Disconnect the b2 and b3 or a2 and a3 fold seat control ECU connectors.

(b) Disconnect the b4 and b5 or a4 and a5 reclining motor connectors.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

LH Side
RH Side










(d) Reconnect the reclining motor connectors.

(e) Reconnect the fold seat control ECU connectors.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

3. INSPECT NO. 2 SEATBACK FRAME SUB-ASSEMBLY (RECLINING MOTOR)

(a) Remove the No. 2 seatback frame sub-assembly (reclining motor) Disassembly.





(b) Check the operation of the reclining motor.

(1) Apply battery voltage to the reclining motor and check the operation of the reclining motor.

OK:

LH Side
RH Side










Text in Illustration





(c) Reinstall the No. 2 seatback frame sub-assembly (reclining motor).

NG -- REPLACE NO. 2 SEATBACK FRAME SUB-ASSEMBLY Disassembly

OK -- REPLACE FOLD SEAT CONTROL ECU Removal