Inspection Procedure

1. Move the room light switch to the DOOR position and open the driver side door. Then check that the room light illuminates.

   OK: 

   Room light illuminates. 

OK: Go to step  4

NG: Go to next step 

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

   Standard resistance 

   RESISTANCE REFERENCE
   
   

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

Fig 1: Identifying Courtesy Light Switch
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY (DRIVER SIDE) 

OK: Go to next step 

1. Disconnect the D9 switch connector.
2. Disconnect the 1A junction block connector.
3. Measure the resistance of the wire harness side connectors.

   Standard resistance 

   RESISTANCE REFERENCE
   
   

   Tester Connection	Specified Condition
   D9-1 - 1A-21 (DCTY)	Below 1 Ω

Fig 2: Identifying D9 Switch Connector And 1A Junction Block Connector
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK: Go to next step 

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

   Standard resistance 

   RESISTANCE REFERENCE
   
   

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

Fig 3: Identifying Unlock Warning Switch
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE UNLOCK WARNING SWITCH ASSEMBLY 

OK: Go to next step 

1. Disconnect the U1 switch connector.
2. Disconnect the 1E junction block connector.
3. Measure the resistance of the wire harness side connectors.

   Standard resistance 

   RESISTANCE REFERENCE
   
   

   Tester Connection	Specified Condition
   U1-2 - 1E-26 (KSW)	Below 1 Ω
   U1-1 -Body ground	Below 1 Ω

Fig 4: Identifying U1 Switch Connector And 1E Junction Block Connector
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK: Go to next step 

1. After replacing the integration relay with a normally functioning relay, check that the power door lock operates normally.

   OK: 

   Power door lock operates normally. 

NG: REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY 

OK: NORMAL (INTEGRATION RELAY DEFECTIVE)