Last Modified: 7-3-2017 6.8:8.0.40 Doc ID: RM0000018BT005X
Model Year Start: 2007 Model: LX470 Prod Date Range: [08/2006 -           ]
Title: LIGHTING: LIGHTING SYSTEM: Taillight Relay Circuit; 2007 MY LX470 [08/2006 -        ]

Taillight Relay Circuit

DESCRIPTION

The headlight dimmer switch sends a signal to the Body ECU (Main).

WIRING DIAGRAM

INSPECTION PROCEDURE

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

PROCEDURE

1.

PERFORM ACTIVE TEST USING INTELLIGENT TESTER (TAILLIGHT RELAY)*1

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

(b) Check that the taillight relay operate in ACTIVE TEST 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.

CHECK TAILLIGHT RELAY CIRCUIT*2
NG

REPLACE ENGINE ROOM JUNCTION BLOCK ASSEMBLY WITH HARNESS AND CONNECTOR

OK

3.

CHECK WIRE HARNESS (TAILLIGHT RELAY - MAIN BODY ECU)
NG

REPAIR OR REPLACE HARNESS AND CONNECTOR

OK

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN ON PROBLEM SYMPTOMS TABLE