Inspection Procedure

WARNING: This page is about a different car, the 2004 Lexus SC 430. However, it is still accessible from the selected car via links, so may be relevant.

PERFORM ACTIVE TEST BY HAND-HELD TESTER
1. Connect the hand-held tester to the DLC3.
2. Check the back-up light using ACTIVE TEST.
Luggage Room J/B ECU:

Fig 1: Luggage Room J/B ECU Values Table Using Lexus Hand-Held Tester
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN ON (See PROBLEM SYMPTOMS TABLE )
2. NG: Go to next step.
CHECK HARNESS AND CONNECTOR
1. Check for open and short circuit in harness and connector between luggage room J/B ECU and back up light.
2. Check for open and short circuit in harness and connector between back up light and body ground.
1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (See ELECTRONIC CIRCUIT INSPECTION PROCEDURE )
2. OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN ON (See PROBLEM SYMPTOMS TABLE )