Inspection Procedure

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

   Body ECU: 

   DATA LIST REFERENCE CHART
   
   

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

   OK: 

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

NG: Go to step 2 

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

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

   Resistance 

   RESISTANCE REFERENCE CHART
   
   

   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 Switch

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE FRONT DOOR COURTESY SWITCH 

OK: Go to Next Step 

1. Disconnect the D8 and L5 connectors.
2. Measure the resistance of the wire harness side connectors.

   Resistance 

   RESISTANCE REFERENCE CHART
   
   

   Tester Connection	Condition	Specified Condition
   D8-14 (DCTY) - K4-1	Always	Below 1 Ω

Fig 2: Identifying D8 And L5 Connectors

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

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