Inspection Procedure

1. Apply the battery voltage to the door lock motor and check the operation of the door lock motor.

   Standard 

   MEASUREMENT CONDITION AND SPECIFIED CONDITION
   
   

   Measurement Condition	Specified Condition
   Battery positive (+) → Terminal 1 (ACT+) Battery negative (-) → Terminal 2 (ACT-)	Locks
   Battery positive (+) → Terminal 2 (ACT-) Battery negative (-) → Terminal 1 (ACT+)	Unlocks

2. Measure the resistance of the unlock detection switch.

   Standard resistance 

   RESISTANCE SPECIFICATION
   
   

   Tester Connection	Door Lock Condition	Specified Condition
   4 (S) - 5 (E)	Locked	10 kΩ or higher
   4 (S) - 5 (E)	Unlocked	Below 1 Ω

   Fig 1: Identifying Back Door Lock Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE BACK DOOR LOCK ASSEMBLY 

OK: Go TO NEXT STEP 

1. Disconnect the 1F main body ECU connector.
2. Disconnect the S4 back door lock assembly connector.
   Fig 2: Identifying 1F Main Body ECU & S4 Back Door Lock Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Measure the resistance.

   Standard resistance 

   RESISTANCE SPECIFICATION
   
   

   Tester Connection	Specified Condition
   1F-14 (ACT+) - S4-1 (ACT+)	Below 1 Ω
   1F-6 (ACT-) - S4-2 (ACT-)	Below 1 Ω
   S4-5 (E) - Body ground	Below 1 Ω
   1F-14 (ACT+) or S4-1 (ACT+) - Body ground	10 kΩ or higher
   1F-6 (ACT-) or S4-2 (ACT-) - Body ground	10 kΩ or higher

4. Reconnect the main body ECU connector.
5. Reconnect the back door lock assembly connector.

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: REPLACE MAIN BODY ECU