Last Modified: 11-29-2007 1.6 J
Service Category: Vehicle Interior Section: Seat
Model Year: 2008 Model: Sequoia Doc ID: RM000001R8A00BX
Title: SEAT: FRONT POWER SEAT CONTROL SYSTEM (w/ Memory): DESCRIPTION (2008 Sequoia)

Front Power Seat does not Operate with Front Power Seat Switch

DESCRIPTION

When a signal is input into the position control ECU, the ECU manages the signals received from the front power seat switch LH, and operates each motor. When 2 or more signals are input, the motors only operate when the signals are from the slide switch and reclining switch.

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1.

INSPECT FUSE (ECU-B1, ECU-IG No. 1, FR P/SEAT LH)

(a) Remove the ECU-B1 fuse from the engine room relay block.

(b) Remove the ECU-IG No. 1 and FR P/SEAT LH fuses from the main body ECU.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

ECU-B1 fuse

Always

Below 1 Ω

ECU-IG No. 1 fuse

Always

Below 1 Ω

FR P/SEAT LH fuse

Always

Below 1 Ω
OK

2.

CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH LH - BATTERY AND BODY GROUND)

(a) Disconnect the X10 and X11 switch connectors.

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

X10-5 (+B) - Body ground

Always

11 to 14 V

X11-4 (IG) - Body ground

Ignition switch off

Below 1 V

Ignition switch ON

11 to 14 V

X11-8 (SYSB) - Body ground

Always

11 to 14 V

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

X10-1 (GND) - Body ground

Always

Below 1 Ω
OK