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 stop 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 terminal STP of luggage room J/B ECU and rear combination light.
2. Check for open and short circuit in harness and connector between rear combination light and body ground.
3. Check for open and short circuit in harness and connector between terminal STOP1 and STOP2 of luggage room J/B ECU and battery.
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 )