Inspection Procedure

1. Inspect the continuity of the key unlock warning switch.
   1. Standard: 
   TERMINALS CONTINUITY INSPECTION
   
   

   Terminal No.	Condition	Specified condition
   1 <=> 2	Switch OFF (Key removed)	No continuity
   	Switch ON (Key set)	Continuity

   Fig 1: Inspecting UN-Lock Warning Switch Assembly

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE UNLOCK WARNING SWITCH ASSY 

OK: Go To Next Step 

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.
   1. Standard: 
   TERMINALS CONTINUITY REFERENCE
   
   

   Symbols (Terminal No.)	Specified condition
   KSW (B4-19) <=> U1-2	Continuity

4. Check the continuity between the disconnected unlock warning switch and the body ground.
   1. Standard: 
   TERMINALS CONTINUITY REFERENCE
   
   

   Terminal No.	Specified condition
   U1-1 <=> Body ground	Continuity

   Fig 2: Locating V1 & B4 Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: REPLACE DRIVER SIDE JUNCTION BLOCK ASSY 

NG: Go To Next Step 

REPAIR OR REPLACE HARNESS AND CONNECTOR