Last Modified: 7-3-2017 6.8:8.0.40 Doc ID: RM0000018BQ005X
Model Year Start: 2007 Model: LX470 Prod Date Range: [08/2006 -           ]
Title: LIGHTING: LIGHTING SYSTEM: Illumination Circuit; 2007 MY LX470 [08/2006 -        ]

Illumination Circuit

DESCRIPTION

  • Illumination circuit (body ECU (main) control):

    Receiving the courtesy from the body ECU (main), the body ECU (main) makes the switch illuminations to comes on.

WIRING DIAGRAM

INSPECTION PROCEDURE

HINT:

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

PROCEDURE

1.

PERFORM ACTIVE TEST USING INTELLIGENT TESTER (ILLUMINATION)*1

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

(b) Check that the illumination 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.

INSPECT ILLUMINATION LIGHT*2

(a) Inspect the personal light 2007 MY LX470 [08/2006 -        ]; LIGHTING: PERSONAL LIGHT ASSEMBLY: ON-VEHICLE INSPECTION .

(b) Inspect the vanity light 2007 MY LX470 [08/2006 -        ]; LIGHTING: VANITY LIGHT: INSPECTION .

(c) Inspect the ignition key cylinder light 2007 MY LX470 [08/2006 -        ]; LIGHTING: IGNITION KEY CYLINDER LIGHT: ON-VEHICLE INSPECTION .

(d) Inspect the rear personal light 2007 MY LX470 [08/2006 -        ]; LIGHTING: REAR ROOM LIGHT ASSEMBLY: ON-VEHICLE INSPECTION .

NG

REPLACE ILLUMINATION LIGHT

OK

3.

CHECK WIRE HARNESS (ILLUMINATION LIGHT - BODY ECU (MAIN))
NG

REPAIR OR REPLACE WIRE HARNESS AND CONNECTOR

OK

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN ON PROBLEM SYMPTOMS TABLE

DESCRIPTION

Illumination circuit (sub body ECU control):

Thsi circuit is used to turn the illumination on.

According to the control signal from the body ECU (main) by the BEAN signal, the sub body ECU performs lighting, lights-out and adjustment of the foot light and the inside door handle illumination. The sub boy ECU controls lighting and lights-out if the center console spot light.

According to the control signal from the body ECU (main) by the BEAN signal, the sub body ECU performs lighting and lights-out foot light and side step light.

WIRING DIAGRAM

INSPECTION PROCEDURE

HINT:

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

PROCEDURE

1.

PERFORM ACTIVE TEST USING INTELLIGENT TESTER (ILLUMINATION)*1

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

(b) Check that he illumination lights 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.

INSPECT ILLUMINATION LIGHT*2

(a) Inspect the illumination lights 2007 MY LX470 [08/2006 -        ]; LIGHTING: LIGHTING SYSTEM: ON-VEHICLE INSPECTION .

NG

REPLACE ILLUMINATION LIGHT

OK

3.

CHECK WIRE HARNESS (ILLUMINATION LIGHT - SUB BODY ECU)
NG

REPAIR OR REPLACE HARNESS AND CONNECTOR

OK

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN ON PROBLEM SYMPTOMS TABLE