Inspection Procedure

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

   Body ECU: 

   DATA LIST REFERENCE CHART
   
   

   Item	Measurement Item / Display (Range)	Normal Condition	Diagnostic Note
   D LOCK POS SW	Door unlock detection switch signal / ON or OFF	ON: Door is unlocked OFF: Door is locked	-

OK: 

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

NG: Go to step 2 

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

1. Remove the front door lock assembly LH.
2. Measure the resistance of the door unlock detection switch.

   Resistance 

   RESISTANCE REFERENCE CHART
   
   

   Tester Condition	Door Lock Condition	Specified Condition
   Battery positive (+) → Terminal 1 Battery negative (-) → Terminal 4	ON (Door lock set to UNLOCK)	7 - 8 (Below 1 Ω)
   Battery positive (+) → Terminal 4 Battery negative (-) → Terminal 1	OFF (Door Lock set to LOCK)	7 - 8 (10 kΩ or higher)

Fig 1: Identifying Door Unlock Detection Switch Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE FRONT DOOR LOCK ASSEMBLY LH 

OK: Go to Next Step 

1. Disconnect the D8 and H9 connectors.
2. Measure the resistance of the wire harness side connectors.

   Resistance 

   RESISTANCE REFERENCE CHART
   
   

   Tester Connection	Condition	Specified Condition
   D8-7 (LSWD) - H9-8	Always	Below 1 Ω
   H9-7 - Body ground	Always	Below 1 Ω

Fig 2: Identifying D8 And H9 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  .