Inspection Procedure

WARNING: This page is about a different car, the 2004 Lexus ES 330. 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. Turn the ignition switch ON and push the hand-held tester main SW ON.
3. Select the item "D DOR CTY SW" in the DATA LIST and read its value displayed on the hand-held tester.
OK: ON: Driver's door is open

OFF: Driver's door is close

OK REPLACE DRIVER SIDE JUNCTION BLOCK ASSY

NG: OK: Go to next step.
INSPECT FRONT DOOR COURTESY LAMP SWITCH ASSY
1. Remove the courtesy lamp switch.
2. Inspect the courtesy lamp switch continuity, as shown in Fig 1 and Fig 2.
Fig 1: Inspecting Lamp Switch Assy
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard:

Fig 2: Front Door Courtesy Lamp Switch Specified Condition Chart
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE FRONT DOOR COURTESY LAMP SWITCH ASSY

OK: Go to next step.
CHECK WIRE HARNESS
1. Disconnect the B6 body ECU and D8 courtesy switch connectors.
2. Check the continuity between the connectors.
Standard:

Fig 4: Wire Harness Specified Condition Chart
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR

OK: CHECK DRIVER SIDE JUNCTION BLOCK ASSY (See TERMINALS OF ECU )