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

   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 [08/2019 - ] 

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: Customize Setting / Smart Access.
   SMART ACCESS
   
   

   Tester Display	Tester Display	Default	Setting	ECU
   Back Door Opening Operation	Function that sets the back door when the user is carrying the electrical key transmitter sub-assembly and presses the luggage electrical key switch (unlock switch).	Long	00:Long, 01:Twice, 10:OFF	Certification ECU (Smart key ECU assembly)

   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. Enter the following menus: Body Electrical / Smart Access / Data List.
2. Read the Data List according to the display on the Techstream.
   SMART ACCESS
   
   

   Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
   Tr/B-Door Unlock SW	Luggage electrical key switch (unlock switch)	ON or OFF	ON: Luggage electrical key switch (unlock switch) pressed OFF: Luggage electrical key switch (unlock switch) not pressed	Displays whether the Luggage electrical key 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 Luggage electrical key switch.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to  REMOVAL [08/2019 - 08/2021]  , or refer to  REMOVAL [08/2021 - ] 

Result: 

NG 

See step  4

1. Disconnect the X6 luggage electrical key switch connector.
2. Disconnect the G113 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
   X6-5 (UL) - G113-5 (TSW5)	Always	Below 1 Ω
   X6-6 (E) - Body ground	Always	Below 1 Ω
   X6-5 (UL) or G113-5 (TSW5) - Other terminals and 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 luggage electrical key switch.

   Refer to REMOVAL [08/2015 - ]

2. Inspect the luggage electrical key switch.

   Refer to INSPECTION [08/2015 - ]

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to  REMOVAL [08/2019 - 08/2021]  , or refer to  REMOVAL [08/2021 - ] 

Result: 

NG 

REPLACE LUGGAGE ELECTRICAL KEY SWITCH. Refer to  REMOVAL [08/2015 - ]