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

1. When the door control switch on the power window regulator master switch is operated, check that the doors unlock and lock according to the switch operation.

   Refer to OPERATION CHECK [08/2019 - 08/2022] , or refer to OPERATION CHECK [08/2022 - ]

   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  7

Result: 

C 

GO TO POWER DOOR LOCK CONTROL SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [08/2019 - ] 

Result: 

A 

See step  2

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / Smart Key / Data List.
5. Read the Data List according to the display on the Techstream.
   BODY ELECTRICAL > SMART KEY > DATA LIST
   
   

   Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
   B-Dr Opening Operation	Back door opening operation	Long, Twice, OFF	Customization status displayed	-

   Result

   Result	Proceed to
   Customize setting is Long or Twice	A
   Customize setting is OFF	B

Result: 

B 

PERFORM CUSTOMIZE SETTING (Proceed to Customize Parameters). Refer to  CUSTOMIZE PARAMETERS [08/2019 - ] 

Result: 

A 

See step  3

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / Smart Key / Data List.
5. Read the Data List according to the display on the Techstream.
   BODY ELECTRICAL > SMART KEY > DATA LIST
   
   

   Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
   Tr/B-Door Unlock SW	Back door opener switch (unlock switch)	ON or OFF	ON: Back door opener switch (unlock switch) pushed OFF: Back door opener switch (unlock switch) not pushed	Displays whether the back door opener switch (unlock switch) is on or off. Use this Data List item to help determine if there is a switch malfunction when the back door unlock function does not operate.

   OK

   The Techstream display changes correctly in response to the operation of the back door opener switch assembly.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to  REMOVAL [08/2019 - ] 

Result: 

NG 

See step  4

1. Disconnect the W3 back door opener switch assembly connector.
2. Disconnect the W10 multiplex network door ECU connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   W3-2 - W10-24 (HSW+)	Always	Below 1 Ω
   W3-1 - W10-7 (HSW-)	Always	Below 1 Ω
   W3-2 or W10-24 (HSW+) - Body ground	Always	10 kΩ or higher
   W3-1 or W10-7 (HSW-) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  5

1. Remove the back door opener switch assembly.

   Refer to DISASSEMBLY [08/2015 - ]

2. Inspect the back door opener switch assembly.

   Refer to INSPECTION [08/2015 - ]

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE BACK DOOR OPENER SWITCH ASSEMBLY. Refer to  DISASSEMBLY [08/2015 - ] 

Result: 

OK 

See step  6

1. Disconnect the F112 certification ECU (smart key ECU assembly) connector.
2. Disconnect the V2 multiplex network door ECU connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   F112-5 (TSW5) - V2-11 (HSWZ)	Always	Below 1 Ω
   F112-13 (TSW6) - V2-20 (SUP2)	Always	Below 1 Ω
   F112-5 (TSW5) or V2-11 (HSWZ) - Body ground	Always	10 kΩ or higher
   F112-13 (TSW6) or V2-20 (SUP2) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE MULTIPLEX NETWORK DOOR ECU. Refer to  DISASSEMBLY [08/2015 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus : Body Electrical > Back Door P/W > Data List
5. Read the Data List according to the display on the Techstream.
   BODY ELECTRICAL > BACK DOOR P/W > DATA LIST
   
   

   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)

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE MULTIPLEX NETWORK DOOR ECU 

Result: 

NG 

See step  8

1. Remove the back door control switch.

   Refer to DISASSEMBLY [08/2015 - ]

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

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Component without harness connected (to Back Door Control Switch)

   Standard Resistance

   Tester Connection	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

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  9

1. Disconnect the W11 back door control switch connector.
2. Disconnect the W10 multiplex network door 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) or W10-9 (SDN) - Body ground	Always	10 kΩ or higher
   W11-2 (E3) or W10-21 (E3) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE MULTIPLEX NETWORK DOOR ECU. Refer to  DISASSEMBLY [08/2015 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR