Back Door Entry Lock Function does not Operate: Procedure

1. When the door control switch on the master switch assembly is operated, check that the locked doors unlock. Refer to OPERATION CHECK .

   OK

   Locked doors unlock.

NG → See step   7 

OK: Go to next step 

1. Connect Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the tester on.
4. Enter the following menus:

   Body Electrical / Smart Key / Data List.

5. Select Tr/B-Door Lock SW in the Data List and read the tester display.
   SMART KEY (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)):
   
   

   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 the tester screen, each item changes between ON and OFF according to the chart above.

NG → See step   3 

OK → See step   6 

1. Remove the back door opener switch. Refer to REMOVAL .
   Fig 1: Identifying Back Door Opener Switch Component

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

   Standard resistance

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

NG → See step   8 

OK: Go to next step 

1. Disconnect the certification ECU (smart key ECU assembly) connector.
   Fig 2: Identifying Certification ECU And Back Door Opener Switch Connector Terminal Identification

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

   Standard resistance

   Tester Connection	Condition	Specified Condition
   D40-7 (TSW5) - h1-1 (L)	Always	Below 1 Ω
   D40-7 (TSW5) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Measure the resistance according to the value(s) in the table below.
   Fig 3: Identifying Back Door Opener Switch Connectors Terminal Identification

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard resistance

   Tester Connection	Condition	Specified Condition
   h1-2 (E) - Body ground	Always	Below 1 Ω

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   6