Last Modified: 7-3-2017 6.8:8.0.40 Doc ID: RM0000017C1006X
Model Year Start: 2007 Model: LX470 Prod Date Range: [08/2006 -           ]
Title: DOOR LOCK: POWER DOOR LOCK CONTROL SYSTEM: Power Source Circuit; 2007 MY LX470 [08/2006 -        ]

Power Source Circuit

DESCRIPTION

  • This circuit supplies power to operate the power window regulator master switch.

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1.

INSPECT FUSE (ECU-IG1, AM1, P/W (FL))

(a) Remove the ECU-IG1 and AM1 fuses from the cowl side junction block LH.

(b) Remove the P/W (FL) fuse from the cowl side junction block RH.

(c) Measure the resistance of the fuses.

Standard resistance:

Below 1 Ω

NG

REPLACE FUSE

OK

2.

CHECK POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY (CPUB, SIG VOLTAGE)

(a) Turn the ignition switch OFF.

(b) Measure the voltage between terminals CPUB, SIG, BDR and GND.

Standard voltage:

10 to 14 V

OK

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN ON PROBLEM SYMPTOMS TABLE

NG

3.

CHECK WIRE HARNESS (MASTER SWITCH - BATTERY AND BODY GROUND)
NG

REPAIR OR REPLACE HARNESS AND CONNECTOR

OK

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN ON PROBLEM SYMPTOMS TABLE