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.

READ VALUE OF HAND-HELD TESTER
1. Connect the hand-held tester to the DLC3.
2. Check the light control switch using DATA LIST.
OK:

Light control switch:

Fig 1: Light Control Switch Values Table Using Lexus Hand-Held Tester
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fog light switch:

Fig 2: Fog Light Switch Values Table Using Lexus Hand-Held Tester
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Headlight dimmer switch:

Fig 3: Headlight Dimmer Switch Values Table Using Lexus Hand-Held Tester
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Turn signal and hazard warning switch:

Fig 4: Turn Signal And Hazard Warning Switch 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: REPLACE TURN SIGNAL SWITCH ASSY