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.

INSPECT FRONT DOOR COURTESY LAMP SWITCH ASSY
1. Inspect continuity of the front door courtesy switch.
  
  Fig 1: Identifying Front Door Switch Connector
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Standard:
  
  Fig 2: Front Door Courtesy Lamp Switch Continuity Table
  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 D8 front door courtesy switch connector.
2. Disconnect the B6 connector from the driver side J/B.
3. Check the continuity between the disconnected connectors.
  Standard:
  
  Fig 4: Disconnected Connectors Continuity Table
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Check the continuity between front door courtesy switch connector and the body ground.
  Standard:
  
  Fig 5: Front Door Courtesy Switch Connector To Body Ground Continuity Table
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  NG: REPAIR OR REPLACE HARNESS AND CONNECTOR
  
  OK: REPLACE DRIVER SIDE JUNCTION BLOCK ASSY