Back Door Entry Lock Function does not Operate [09/2015 - ]: 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 [09/2015 - 08/2019] , or refer to OPERATION CHECK [08/2019 - ]

   OK

   Door locks operate normally.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

GO TO POWER DOOR LOCK CONTROL SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [09/2015 - ] 

Result: 

OK 

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 Access / Data List.
5. Read the Data List according to the display on the Techstream.

   Body Electrical > Smart Access > Data List 

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

   Body Electrical > Smart Access > Data List 

   Tester Display
   Tr/B-Door Lock SW

   HINT: 

   When checking the operation of the entry lock function several times, it can be operated up to 2 times consecutively. To operate the function 3 times or more consecutively, the doors need to be unlocked once. However, this is only for the entry lock function, other door lock operations, such as a wireless door lock operation can be performed consecutively.

   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 [09/2015 - 08/2016]  , or refer to  REMOVAL [08/2016 - 08/2019]  , or refer to  REMOVAL [08/2019 - ] 

Result: 

NG 

See step  3

1. Disconnect the R1 certification ECU (smart key ECU assembly) connector.
2. Disconnect the Z8 back door opener switch assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   R1-27 (TSW6) - Z8-1 (L)	Always	Below 1 Ω
   Z8-2 (E) - Body ground	Always	Below 1 Ω
   R1-27 (TSW6) or Z8-1 (L) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  4

1. Remove the back door opener switch assembly.

   Refer to REMOVAL [09/2015 - ]

2. Inspect the back door opener switch assembly.

   Refer to INSPECTION [09/2015 - ]

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to  REMOVAL [09/2015 - 08/2016]  , or refer to  REMOVAL [08/2016 - 08/2019]  , or refer to  REMOVAL [08/2019 - ] 

Result: 

NG 

REPLACE BACK DOOR OPENER SWITCH ASSEMBLY. Refer to  REMOVAL [09/2015 - ]