Position Sensor Circuit

SEAT: REAR POWER SEAT CONTROL SYSTEM: Position Sensor Circuit
- Position Sensor Circuit

DESCRIPTION

The fold seat control ECU receives switch operation signals from the rear power seat switch and fold seat switch, and activates the power seat 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 (SV2 TERMINAL)

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





Standard Voltage:

LH Side





RH Side





NG -- REPLACE FOLD SEAT CONTROL ECU Removal
OK -- Continue to next step.

2. CHECK FOLD SEAT CONTROL ECU (POSITION SENSOR SIGNAL)

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





Standard Voltage:

LH Side





RH Side





NG -- CHECK HARNESS AND CONNECTOR (FOLD SEAT CONTROL ECU - NO. 1 POWER SEAT MOTOR)

OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

3. CHECK HARNESS AND CONNECTOR (FOLD SEAT CONTROL ECU - NO. 1 POWER SEAT MOTOR)

(a) Disconnect the O34 or P20 ECU connector.





(b) Disconnect the a2 or Y2 motor connector.

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

Standard Resistance:

LH Side





LH Side





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE NO. 1 POWER SEAT MOTOR Disassembly