Inspection Procedure

WARNING: This page is about a different car, the 2005 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT COURTESY LAMP SWITCH (DRIVER SIDE DOOR)
1. Inspect front door courtesy lamp switch continuity.
  1. Check that there is continuity between terminal 1 and body ground, when switch is operated.
    Standard:
    
    ON (When shaft is pressed): No continuity
    
    OFF (When shaft is not pressed): Continuity
1. NG: REPLACE COURTESY LAMP SWITCH
OK: Go to next step.

INSPECT DRIVE SIDE JUNCTION BLOCK (SIG)

Insert the ignition key to the key cylinder.

Measure the voltage between terminal 1C-2 of driver side junction block and body ground.

Standard:

TESTER CONNECTION SPECIFIED CONDITION

Ignition key	Specified condition
Insert	10-14 V
Uninsert	Below 1V

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to next step.

CHECK AND REPLACE DRIVE SIDE JUNCTION BLOCK