Back Door Closer does not Operate [10/2023 - ]: Procedure

1. Check for DTCs.

   Body Electrical > Back Door > Trouble Codes 

   Result

   Result	Proceed to
   DTC is not output	A
   DTC B2250-01 is output	B
   DTC B2251-01 is output	C

Result: 

B 

GO TO DIAGNOSTIC TROUBLE CODE CHART 

Refer to DTC B2250-01: Back Door Closer General Electrical Failure [10/2023 - ] 

Result: 

C 

GO TO DIAGNOSTIC TROUBLE CODE CHART 

Refer to DTC B2251-01: Back Door Closer Switch General Electrical Failure [10/2023 - 11/2024] , or refer to DTC B2251-01: Back Door Closer Switch General Electrical Failure [11/2024 - ] 

Result: 

A 

See step  2

1. Check if the back door can be fully closed by hand.

   Result

   Result	Proceed to
   The back door can be closed normally	A
   The back door cannot be closed normally	B

Result: 

B 

IMPROPER FIT OF BACK DOOR, OR A FOREIGN OBJECT IS STUCK IN BACK DOOR 

Result: 

A 

See step  3

1. Disconnect the R26, R28 and R29 multiplex network door ECU connectors.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   R28-4 (GND) - Body ground	Always	Below 1 Ω

3. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   R26-7 (ECUB) - Body ground	Ignition switch off	11 to 14 V
   R29-5 (B) - Body ground	Ignition switch off	11 to 14 V
   R26-9 (IG) - Body ground	Ignition switch ON	11 to 14 V
   	Ignition switch off	Below 1 V

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  4

Refer to INSPECTION [11/2018 - ]

Result

Result: 

NG 

REPLACE BACK DOOR LOCK WITH COURTESY LIGHT SWITCH ASSEMBLY 

Refer to REMOVAL [11/2018 - ]

Result: 

OK 

See step  5

1. Disconnect the R13 and R14 back door lock with courtesy light switch connectors.
2. Disconnect the R26 and R28 multiplex network door ECU connectors.
3. Disconnect the 4H instrument panel junction block assembly connector.
4. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   R13-2 (M+) - R28-2 (DC+)	Always	Below 1 Ω
   R13-1 (M-) - R28-6 (DC-)	Always	Below 1 Ω
   R14-4 (CTY) - R26-3 (FUL)	Always	Below 1 Ω
   R14-2 (FSW) - R26-13 (PAWL)	Always	Below 1 Ω
   R14-3 (CLS) - R26-5 (HAF)	Always	Below 1 Ω
   R14-6 (OPN) - R26-15 (POS)	Always	Below 1 Ω
   R14-1 (E) - Body ground	Always	Below 1 Ω
   R13-2 (M+) or R28-2 (DC+) - Body ground	Always	10 kΩ or higher
   R13-1 (M-) or R28-6 (DC-) - Body ground	Always	10 kΩ or higher
   R14-4 (CTY) or R26-3 (FUL) - Body ground	Always	10 kΩ or higher
   R14-2 (FSW) or R26-13 (PAWL) - Body ground	Always	10 kΩ or higher
   R14-3 (CLS) or R26-5 (HAF) - Body ground	Always	10 kΩ or higher
   R14-6 (OPN) or R26-15 (POS) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE MULTIPLEX NETWORK DOOR ECU 

Refer to REMOVAL [10/2023 - ]

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR