Back Door Entry Unlock Function does not Operate [08/2014 - ]: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / Smart Access / Data List.
5. Read the Data List according to the display on the Techstream.
   SMART ACCESS
   
   

   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

B 

PERFORM CUSTOMIZE SETTING (Proceed to Customize Parameters) 

(See article. Refer to CUSTOMIZE PARAMETERS [08/2014 - ] )

Result:  A

A 

See step  2

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 (See article. Refer to OPERATION CHECK [08/2014 - ] ).

   OK

   Door locks operate normally.

Result:  NG

NG 

GO TO POWER DOOR LOCK CONTROL SYSTEM 

(See article. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2014 - ] )

Result:  OK

OK 

See step  3

1. Enter the following menus: Body Electrical / Main Body / Active Test.
2. Perform the Active Test according to the display on the Techstream.
   MAIN BODY
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Trunk and Back-Door Open	Operate back door lock motor	ON or OFF	-

   OK

   The back door lock assembly unlatches when ON is selected.

Result:  NG

NG 

GO TO POWER DOOR LOCK CONTROL SYSTEM 

(See article. Refer to Only Back Door cannot be Opened [08/2014 - ] )

Result:  OK

OK 

See step  4

1. Using the Techstream, read the Data List (See article. Refer to DATA LIST / ACTIVE TEST [08/2014 - ] ).
   SMART ACCESS
   
   

   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:  OK

OK 

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) 

(See article. Refer to REMOVAL [08/2014 - ] )

Result:  NG

NG 

See step  5

1. Disconnect the V4 back door opener switch assembly connector.
2. Disconnect the H1 certification ECU (smart key ECU assembly) connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   V4-3 (UL) - H1-22 (TSW5)	Always	Below 1 Ω
   V4-2 (E) - Body ground	Always	Below 1 Ω
   V4-3 (UL) or H1-22 (TSW5) - Body ground	Always	10 kΩ or higher

Result:  NG

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result:  OK

OK 

See step  6

1. Remove the back door opener switch assembly (See article. Refer to REMOVAL [08/2014 - ] ).

   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 (UL) - 2 (E)	No switch pushed	10 kΩ or higher
   3 (UL) - 2 (E)	Unlock switch pushed	Below 1 Ω

   TEXT IN ILLUSTRATION
   
   

   *a	Component without harness connected (Back Door Opener Switch Assembly)

Result:  OK

OK 

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) 

(See article. Refer to REMOVAL [08/2014 - ] )

Result:  NG

NG 

REPLACE BACK DOOR OPENER SWITCH ASSEMBLY 

(See article. Refer to REMOVAL [08/2014 - ] )