Inspection Procedure

1. Check that each function of the entry door lock operates normally by using the lock switch.

   OK: Entry door lock is functioning normally function. 

NG: GO TO SMART ACCESS SYSTEM WITH PUSH-BUTTON START  (See HOW TO PROCEED WITH TROUBLESHOOTING  )

OK: Go to next step 

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

   Main Body ECU RH 

   MAIN BODY ECU RH DATA LIST
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   D Door Courtesy SW	Driver side door courtesy light switch signal/ON or OFF	ON: Driver side door is unlocked OFF: Driver side door is locked	-

   OK: ON (driver side door is unlocked) appears on screen. 

OK: REPLACE MAIN BODY ECU RH 

NG: Go to next step 

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

   Standard resistance 

   RESISTANCE SPECIFIED CONDITIONS
   
   

   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: Inspecting Front Door Courtesy Light Switch Assembly - LH
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY LH 

OK: Go to next step 

1. Disconnect the U1 ECU connector.
2. Disconnect the V7 switch connector.
3. Measure the resistance of the wire harness side connectors.

   Standard resistance 

   RESISTANCE SPECIFIED CONDITIONS
   
   

   Tester Connection	Specified Condition
   U1-14 (DCTY) - V7-1	Below 1 Ω
   U1-14 (DCTY) - Body ground	10 kΩ or higher

Fig 2: Identifying U1 ECU And V7 Switch Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: REPLACE MAIN BODY ECU RH