Back Door Entry Unlock Function does not Operate [08/2015 - 08/2019]: Procedure

1. When the door control switch on the multiplex network master switch assembly is operated, check that the doors unlock and lock according to the switch operation (Refer to OPERATION CHECK [08/2015 - 08/2019] ).

   OK

   Door locks operate normally.

   RESULT
   
   

   Result	Proceed to
   OK (back door opener switch operation fails)	A
   OK (back door control switch operation fails)	B
   NG	C

Result: 

B 

See step  5

Result: 

C 

GO TO POWER DOOR LOCK CONTROL SYSTEM 

(Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2015 - 08/2019] )

Result: 

A 

See step  2

1. Using the Techstream, read the Data List (Refer to DATA LIST / ACTIVE TEST [08/2015 - 08/2019] ).
   SMART KEY
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Tr/B Door Unlock SW	Back door unlock switch / ON or OFF	ON: Back door unlock switch pushed OFF: Back door unlock switch not pushed	-

   OK

   "ON" (unlock switch is pushed) and "OFF" (unlock switch is not pushed) appear on the screen.

Result: 

OK 

REPLACE CERTIFICATION ECU 

(Refer to REMOVAL [08/2015 - 08/2019] )

Result: 

NG 

See step  3

1. Remove the back door opener switch (Refer to DISASSEMBLY [08/2015 - ] ).

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Switch Condition	Specified Condition
   1 (UL) - 2 (E)	No switch pushed	10 kΩ or higher
   1 (UL) - 2 (E)	Unlock switch pushed	Below 1 Ω

Result: 

NG 

REPLACE BACK DOOR OPENER SWITCH ASSEMBLY (UNLOCK SWITCH) 

(Refer to DISASSEMBLY [08/2015 - ] )

Result: 

OK 

See step  4

1. Disconnect the back door opener switch connector.
2. Disconnect the F79 ECU connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   1 (UL) - F79-22 (TSW5)	Always	Below 1 Ω
   2 (E) - Body ground	Always	Below 1 Ω
   1 (UL) - Body ground	Always	10 kΩ or higher

Result: 

OK 

REPLACE CERTIFICATION ECU 

(Refer to REMOVAL [08/2015 - 08/2019] )

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

1. Using the Techstream, read the Data List (Refer to DATA LIST / ACTIVE TEST [08/2015 - 08/2019] ).
   BACK DOOR P/W
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Outside Back Door P/W Down SW	Unlock switch on back door control switch signal / ON or OFF	ON: Unlock switch on back door control switch pushed OFF: Unlock switch on back door control switch not pushed	-

   OK

   "ON" (unlock switch is pushed) and "OFF" (unlock switch is not pushed) appear on the screen.

Result: 

OK 

REPLACE MULTIPLEX NETWORK DOOR ECU (BACK DOOR P/W) 

(Refer to DISASSEMBLY [08/2015 - ] )

Result: 

NG 

See step  6

1. Remove the back door control switch (Refer to DISASSEMBLY [08/2015 - ] ).

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Switch Condition	Specified Condition
   3 (SDN) - 2 (E3)	No switch pushed	10 kΩ or higher
   3 (SDN) - 2 (E3)	Unlock switch pushed	Below 1 Ω

Result: 

NG 

REPLACE BACK DOOR CONTROL SWITCH 

(Refer to DISASSEMBLY [08/2015 - ] )

Result: 

OK 

See step  7

1. Disconnect the W11 switch connector.
2. Disconnect the W10 ECU connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   W11-3 (SDN) - W10-9 (SDN)	Always	Below 1 Ω
   W11-2 (E3) - W10-21 (E3)	Always	Below 1 Ω
   W11-3 (SDN) - Body ground	Always	10 kΩ or higher
   W11-2 (E3) - Body ground	Always	10 kΩ or higher

Result: 

OK 

REPLACE MULTIPLEX NETWORK DOOR ECU (BACK DOOR P/W) 

(Refer to DISASSEMBLY [08/2015 - ] )

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR