Only Back Door cannot be Opened [12/2019 - 11/2023]: Procedure

1. Perform the Active Test according to the display on the GTS.

   Body Electrical > Main Body > Active Test 

   Tester Display	Measurement Item	Control Range	Diagnostic Note
   Trunk and Back-Door Open	Back door lock motor	OFF/ON	-

   Body Electrical > Main Body > Active Test 

   Tester Display
   Trunk and Back-Door Open

   OK

   The back door lock with courtesy light switch assembly unlatches when ON is selected.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

See step  5

Result: 

OK 

See step  2

1. Read the Data List according to the display on the GTS.

   Body Electrical > Entry&Start > Data List 

   Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
   Tr/B-Door Unlock SW	Back door opener switch (open switch)	OFF or ON	OFF: Back door opener switch (open switch) not pressed ON: Back door opener switch (open switch) pressed	-

   Body Electrical > Entry&Start > Data List 

   Tester Display
   Tr/B-Door Unlock SW

   OK

   The GTS displays ON or OFF according to the back door opener switch (open switch) operation.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). Refer to  REMOVAL [12/2019 - 10/2022]  , or refer to  REMOVAL [10/2022 - 11/2023] 

Result: 

NG 

See step  3

Refer to INSPECTION [12/2019 - ]

Result

Result: 

NG 

REPLACE BACK DOOR OPENER SWITCH ASSEMBLY. Refer to  REMOVAL [12/2019 - ] 

Result: 

OK 

See step  4

1. Disconnect the M5 certification ECU (smart key ECU assembly) connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   W11-3 (UL) - M5-26 (TSW5)	Always	Below 1 Ω
   W11-2 (E) - Body ground	Always	Below 1 Ω
   W11-3 (UL) or M5-26 (TSW5) - Other terminals and body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to  REMOVAL [12/2019 - 11/2023] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Refer to INSTALLATION [12/2019 - ]

Result

Result: 

NG 

REPLACE BACK DOOR LOCK WITH COURTESY LIGHT SWITCH ASSEMBLY. Refer to  REMOVAL [12/2019 - ] 

Result: 

OK 

See step  6

1. Disconnect the 4D instrument panel junction block assembly connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   W12-1 (ACT+) - 4D-20	Always	Below 1 Ω
   W12-2 (ACT-) - Body ground	Always	Below 1 Ω
   W12-1 (ACT+) or 4D-20 - 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  7

1. Replace the instrument panel junction block assembly.

   Refer to REMOVAL [12/2019 - 10/2022] , or refer to REMOVAL [10/2022 - 11/2023]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  8

1. Check that the back door can be opened.

   OK

   The back door can be opened.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

END (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY WAS DEFECTIVE) 

Result: 

NG 

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). Refer to  REMOVAL [12/2019 - 10/2022]  , or refer to  REMOVAL [10/2022 - 11/2023]