Inspection Procedure

1. Check the DATA LIST for proper functioning of the door courtesy switch.

   Driver door ECU 

   DATA LIST - DRIVER DOOR ECU
   
   

   Item	Measurement Item / Display (Range)	Normal Condition	Diagnostic Note
   COURTSY SW	Courtesy switch / ON or OFF	ON: Door is open OFF: Door is closed	-

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

   Passenger door ECU 

   DATA LIST - PASSENGER DOOR ECU
   
   

   Item	Measurement Item / Display (Range)	Normal Condition	Diagnostic Note
   COURTSY SW	Courtesy switch / ON or OFF	ON: Door is open OFF: Door is closed	-

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

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE 

NG: Go to Next step 

Fig 1: Inspecting Front Door Courtesy Light Switch Assembly

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

   Standard resistance 

   RESISTANCE SPECIFICATION
   
   

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

NG: REPLACE FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY 

OK: Go to Next step 

1. Check the wire harness between the driver door ECU and door courtesy light switch LH.
   1. Disconnect the D17 ECU connector.
   2. Disconnect the D8 switch connector.
   3. Measure the resistance of the wire harness side connectors.

      Standard resistance 

      RESISTANCE SPECIFICATION
      
      

      Tester Connection	Specified Condition
      D17-27 (CTY) 8-1	Below 1 Ω
      D17-27 (CTY) - Body ground	10 kΩ or higher

      Fig 2: Identifying Driver Door ECU And Front Door Courtesy Light Connector Terminals

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Check the wire harness between the passenger door ECU and door courtesy light switch RH.
   Fig 3: Identifying Passenger Door ECU And Front Door Courtesy Light Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. Disconnect the P9 ECU connector.
   2. Disconnect the D9 switch connector.
   3. Measure the resistance of the wire harness side connectors.

      Standard resistance 

      RESISTANCE SPECIFICATION
      
      

      Tester Connection	Specified Condition
      P9-27 (CTY) - D9-1	Below 1 Ω
      P9-27 (CTY) - Body ground	10 kΩ or higher

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE