Front Power Seat Does Not Operate With Front Power Seat Switch

SEAT: FRONT POWER SEAT CONTROL SYSTEM (w/ Seat Position Memory System): Front Power Seat does not Operate with Front Power Seat Switch

Front Power Seat does not Operate with Front Power Seat Switch

DESCRIPTION

Signals of the front power seat switch are monitored by the position control ECU and switch. The position control ECU and switch then activates the driver and front passenger side motors.

WIRING DIAGRAM









INSPECTION PROCEDURE

PROCEDURE

1. INSPECT FUSE (FR P/SEAT LH, FR P/SEAT RH, R/B-B, D/C CUT, MPX-B)
(a) Remove the FR P/SEAT LH fuse from the main body ECU LH.
(b) Remove the FR P/SEAT RH fuse from the main body ECU RH.
(c) Remove the R/B-B fuse from the fuse block.
(d) Remove the D/C CUT and MPX-B fuses from the engine room No. 1 relay block.
(e) Measure the resistance of the fuses.
Standard resistance:
Below 1 Ohms
NG -- REPLACE FUSE
OK -- Continue to next step.
2. CHECK WIRE HARNESS (POSITION CONTROL ECU AND SWITCH ASSEMBLY - BODY GROUND)





(a) Disconnect the a6*2, a7*2, b7*1 and b8*1 switch connectors.
(b) Measure the voltage and resistance of the wire harness side connectors.
Standard voltage:
for driver side






for front passenger side






Standard resistance:
for driver side






for front passenger side






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE POSITION CONTROL ECU AND SWITCH ASSEMBLY