lexus Workshop Repair Guides

Lexus Workshop Service and Repair Manuals

Diagram Information and Instructions|Page 13580 > < Diagram Information and Instructions|Page 13578
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Backup Lamp: Testing and Inspection

LIGHTING: LIGHTING SYSTEM: Back-up Light does not Illuminate

Back-up Light does not Illuminate

WIRING DIAGRAM

INSPECTION PROCEDURE

NOTE:
First perform the communication function inspections in HOW TO PROCEED WITH TROUBLESHOOTING to confirm that there are no
CAN communication malfunctions before troubleshooting this symptom. See: Testing and Inspection/Initial Inspection and Diagnostic
Overview/How To Proceed With Troubleshooting

PROCEDURE

1. PERFORM ACTIVE TEST USING TECHSTREAM (BACK-UP LIGHT) See: Testing and Inspection/Scan Tool Testing and Procedures

(a) Using the Techstream, perform the Active Test. See: Testing and Inspection/Scan Tool Testing and Procedures

Body No.4

OK:
Back-up light condition is switched by Active Test.
NG -- CHECK REAR JUNCTION BLOCK ECU (BCK1 VOLTAGE)
OK -- GO TO AUTOMATIC TRANSMISSION SYSTEM

2. CHECK REAR JUNCTION BLOCK ECU (BCK1 VOLTAGE)

Diagram Information and Instructions|Page 13580 > < Diagram Information and Instructions|Page 13578