Last Modified: 4-30-2014 6.6 J Doc ID: RM000001A4I000X
Model Year: 2006 Model: LX470 Prod Date Range: [05/2005 -           ]
Title: SEAT: FRONT POWER SEAT CONTROL SYSTEM (w/ Memory): Power Seat Control ECU Power Source Circuit; 2006 MY LX470 [05/2005 -        ]

Power Seat Control ECU Power Source Circuit

DESCRIPTION

This circuit is the power source for ECU and sensor.

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1.

INSPECT FUSE (ECU-B2)
NG

CHECK FOR SHORT IN ALL HARNESS AND COMPONENTS CONNECTED TO FUSE, AND REPAIR THEM

OK

2.

CHECK WIRE HARNESS (ECU - BODY GROUND)
NG

REPAIR OR REPLACE HARNESS AND CONNECTOR

OK

3.

CHECK POWER SEAT CONTROL ECU (SYSB VOLTAGE)

(a) Disconnect the S28 ECU connector.

(b) Measure the voltage of the wire harness side connector.

Standard voltage:

10 to 14 V
NG

REPAIR OR REPLACE HARNESS AND CONNECTOR

OK

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN ON PROBLEM SYMPTOMS TABLE