Last Modified: 7-3-2017 6.8:8.0.40 Doc ID: RM000001A5X005X
Model Year Start: 2007 Model: LX470 Prod Date Range: [08/2006 -           ]
Title: LIGHTING: LIGHTING SYSTEM: Dimmer Signal Circuit; 2007 MY LX470 [08/2006 -        ]

Dimmer Signal Circuit

WIRING DIAGRAM

INSPECTION PROCEDURE

HINT:

When using intelligent tester, start from *1. When not using intelligent tester, start from *2.

PROCEDURE

1.

READ VALUE USING INTELLIGENT TESTER (HEADLIGHT DIMMER SWITCH)*1

(a) Connect the intelligent tester (with CAN VIM) to the DLC3.

(b) Check that the headlight dimmer switch operate in DATA LIST 2007 MY LX470 [08/2006 -        ]; LIGHTING: LIGHTING SYSTEM: DATA LIST / ACTIVE TEST .

OK

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN ON PROBLEM SYMPTOMS TABLE

NG

2.

INSPECT HEADLIGHT DIMMER SWITCH ASSEMBLY*2

(a) Inspect headlight dimmer switch 2007 MY LX470 [08/2006 -        ]; LIGHTING: HEADLIGHT DIMMER SWITCH: INSPECTION .

NG

REPLACE HEADLIGHT DIMMER SWITCH ASSEMBLY

OK

3.

CHECK WIRE HARNESS (HEADLIGHT DIMMER SWITCH - BODY ECU (MAIN))
NG

REPAIR OR REPLACE HARNESS AND CONNECTOR

OK

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN ON PROBLEM SYMPTOMS TABLE