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 UN-LOCK WARNING SWITCH ASSY
1. Inspect the continuity of the key unlock warning switch.
  
  Fig 1: Indentifying Key Unlock Warning Switch Connector
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Standard:
  
  Fig 2: Key Unlock Warning Switch Continuity Table
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  NG: REPLACE UN-LOCK WARNING SWITCH ASSY
  
  OK: Go to next step.
CHECK WIRE HARNESS
1. Disconnect the U1 unlock warning switch connector.
2. Disconnect the B4 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 the disconnected unlock warning switch and the body ground.
  Standard:
  
  Fig 5: Disconnected Unlock Warning Switch To Body Ground Continuity Table
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  OK: REPLACE DRIVER SIDE JUNCTION BLOCK ASSY
  
  NG: REPAIR OR REPLACE HARNESS AND CONNECTOR