Reclining Motor Circuit

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

DESCRIPTION

The fold seat control ECU receives switch operation signals from the No. 1 and No. 2 fold seat switches and rear power seat switch and activates the power seat motors. At this time, the Hall IC 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 to detect if an object is caught or if any other abnormal condition has occurred.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

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

(a) for LH Side:





(1) Remove the No. 3 seatback frame sub-assembly LH Disassembly.

(2) Check if the No. 3 seatback frame moves smoothly when the battery is connected to the reclining motor connector terminals.

(b) for RH Side:

(1) Remove the No. 3 seatback frame sub-assembly RH Disassembly.

(2) Check if the No. 3 seatback frame moves smoothly when the battery is connected to the reclining motor connector terminals.

OK:





Result





B -- CHECK HARNESS AND CONNECTOR (FOLD SEAT CONTROL ECU - NO. 3 SEATBACK FRAME RH)

C -- REPLACE NO. 3 SEATBACK FRAME SUB-ASSEMBLY LH Disassembly

D -- REPLACE NO. 3 SEATBACK FRAME SUB-ASSEMBLY RH Disassembly
A -- Continue to next step.

2. CHECK HARNESS AND CONNECTOR (FOLD SEAT CONTROL ECU - NO. 3 SEATBACK FRAME LH)

(a) Disconnect the d2 and d1 ECU connectors.

(b) Disconnect the d3 No. 3 seatback frame connector.

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

Standard Resistance:





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

3. CHECK FOLD SEAT CONTROL ECU LH

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





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

Standard Voltage:





Text in Illustration





NG -- REPLACE NO. 3 SEATBACK FRAME SUB-ASSEMBLY LH Disassembly

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

4. CHECK HARNESS AND CONNECTOR (FOLD SEAT CONTROL ECU - NO. 3 SEATBACK FRAME RH)

(a) Disconnect the c2 and c1 ECU connectors.

(b) Disconnect the c3 No. 3 seatback frame connector.

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

Standard Resistance:





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

5. CHECK FOLD SEAT CONTROL ECU RH

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





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

Standard Voltage:





Text in Illustration





NG -- REPLACE NO. 3 SEATBACK FRAME SUB-ASSEMBLY RH Disassembly

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