Home Vehicle Exterior Lighting (ext) LIGHTING SYSTEM
Last Modified: 11-27-2007 1.6 D
Service Category: Vehicle Exterior Section: Lighting (ext)
Model Year: 2008 Model: LX570 Doc ID: RM000000PKJ01JX
Title: LIGHTING (EXT): LIGHTING SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING (2008 LX570)

HOW TO PROCEED WITH TROUBLESHOOTING

HINT:

  • Use these procedures to troubleshoot the lighting system.
  • *: Use the Techstream.

1.

VEHICLE BROUGHT TO WORKSHOP

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2.

INSPECT BATTERY VOLTAGE

Standard voltage:

11 to 14 V

If the voltage is below 11 V, recharge or replace the battery before proceeding.

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3.

CHECK COMMUNICATION FUNCTION OF COMMUNICATION SYSTEM*

(a) Check for DTCs and make a note of any codes that are output LIGHTING (EXT): LIGHTING SYSTEM: DIAGNOSTIC TROUBLE CODE CHART (2008 LX570) .

(b) Clear the DTCs.

(c) Recheck for DTCs. Based on the DTCs output above, try to cause the output of the same CAN communication system DTC, LIN communication DTC or lighting system DTC by simulating the symptoms indicated by the DTC.

Result

Result

Proceed to

DTC output does not reoccur

A

CAN communication system DTC output reoccurs

B

LIN communication system DTC output reoccurs

C

Lighting system DTC output reoccurs

D

B

Go to CAN COMMUNICATION SYSTEM

C

Go to LIN COMMUNICATION SYSTEM

D

Go to DIAGNOSTIC TROUBLE CODE CHART

A

4.

PROBLEM SYMPTOMS TABLE

Result

Result

Proceed to

Fault is not listed in problem symptoms table

A

Fault is listed in problem symptoms table

B

B

Go to step 6

A

5.

OVERALL ANALYSIS AND TROUBLESHOOTING*

(a) Operation Check LIGHTING (EXT): LIGHTING SYSTEM: OPERATION CHECK (2008 LX570) .

(b) Terminals of ECU LIGHTING (EXT): LIGHTING SYSTEM: TERMINALS OF ECU (2008 LX570) .

(c) Data List / Active Test LIGHTING (EXT): LIGHTING SYSTEM: DATA LIST / ACTIVE TEST (2008 LX570) .

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6.

ADJUST, REPAIR OR REPLACE

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7.

CONFIRMATION TEST

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END