Back Door Entry Lock Function does not Operate: Procedure

1. When the door control switch of the master switch assembly is operated, check that the locked doors unlock.

   OK

   Door locks operate normally.

NG → See step   5 

OK: Go to next step 

1. Using the Techstream, read the Data List.
   SMART KEY
   
   

   Tester Display	Measurement Item/Display	Normal Condition	Diagnostic Note
   Tr/B-Door Lock SW	Back door lock switch / ON or OFF	ON: Back door lock switch is pushed OFF: Back door lock switch is not pushed	-

   OK

   "ON" (switch is pushed) or "OFF" (switch is not pushed) appears on the screen.

NG → See step   3 

OK → REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) 

1. Measure the resistance according to the value(s) in the table below.
   Fig 1: Identifying Back Door Opener Switch Operation

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   1 (UL) - 2 (L)	Lock switch pushed	Below 1 Ω
   1 (UL) - 2 (L)	Lock switch not pushed	10 kΩ or higher

NG → See step   6 

OK: Go to next step 

1. Disconnect the E29 ECU connector.
   Fig 2: Identifying Certification ECU And Back Door Opener Switch Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the S7 switch connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   E29-7 (TSW5) - S7-1 (UL)	Always	Below 1 Ω
   E29-7 (TSW5) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)