Inspection Procedure

1. Check the DATA LIST to ensure proper operation of the front door courtesy light switch.

   Main body ECU 

   MAIN BODY ECU DATA LIST REFERENCE
   
   

   Item	Measurement Item / Display (Range)	Normal Condition	Diagnostic Note
   D DOOR COURTESY SW	Driver side door courtesy switch signal / ON or OFF	ON: Driver side door is open OFF: Driver side door is closed	-

   OK: "ON" (driver door is open) appears on the screen. 

NG: Go to step   5 

OK: Go TO NEXT STEP. 

1. Check the DATA LIST to ensure proper operation of the door unlock warning switch.

   Main body ECU 

   MAIN BODY ECU DATA LIST REFERENCE
   
   

   Item	Measurement Item / Display (Range)	Normal Condition	Diagnostic Note
   KEY UNLOCK WARNING SW	Unlock warning switch signal / ON or OFF	ON: Key is in ignition key cylinder OFF: No key is in ignition key cylinder	-

   OK: "ON" (key is in ignition key cylinder) appears on the screen. 

OK: REPLACE COMBINATION METER ASSEMBLY 

NG: Go TO NEXT STEP. 

1. Remove the unlock warning switch.
2. Measure the resistance of the switch.

   Standard resistance 

   RESISTANCE SPECIFIED CONDITIONS
   
   

   Tester Connection	Condition	Specified Condition
   1 - 2	Not pushed	10 kΩ or higher
   1 - 2	Pushed	Below 1 Ω

   Fig 1: Inspecting Unlock Warning Switch Assembly

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE UNLOCK WARNING SWITCH ASSEMBLY 

OK: Go TO NEXT STEP. 

1. Disconnect the E6 switch connector.
2. Disconnect the IE junction block connector.
3. Measure the resistance between the wire harness side connectors.

   Standard resistance 

   RESISTANCE SPECIFIED CONDITIONS
   
   

   Tester Connection	Specified Condition
   E6-1 - IE-26 (KSW)	Below 1 Ω
   E6-2 - Body ground	Below 1 Ω

   Fig 2: Identifying E6 Switch And IE Junction Block Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK: REPLACE INSTRUMENT PANEL JUNCTION BLOCK (MAIN BODY ECU) 

1. Remove the courtesy light switch.
2. Measure the resistance of the switch.

   Standard resistance 

   RESISTANCE SPECIFIED CONDITIONS
   
   

   Tester Connection	Condition	Specified Condition
   1 - Body ground	Not pushed (ON)	Below 1 Ω
   1 - Body ground	Pushed (OFF)	10 kΩ or higher

   Fig 3: Inspecting Front Door Courtesy Light Switch (For Driver Side)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE FRONT DOOR COURTESY LIGHT SWITCH (for Driver Side) 

OK: Go TO NEXT STEP. 

1. Disconnect the K7 connector.
2. Disconnect the IA junction block connector.
3. Measure the resistance between the wire harness side connectors.

   Standard resistance 

   RESISTANCE SPECIFIED CONDITIONS
   
   

   Tester Connection	Specified Condition
   K7-1 - IA-21 (DCTY)	Below 1 Ω

   Fig 4: Identifying K7 And IA Junction Block Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK: REPLACE INSTRUMENT PANEL JUNCTION BLOCK (MAIN BODY ECU)