Back Power Window Auto Up / Down Function does not Operate [12/2024 - ]: Procedure

1. Initialize the power window regulator motor assembly RH (for back door).

   Refer to REGISTRATION [12/2024 - ]

2. Check that the back door power window moves when the auto up and down functions of the back door power window regulator switch on the map light assembly are operated.

   Refer to OPERATION CHECK [12/2024 - ]

   OK

   Back door auto up and down functions are normal.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

END (PROBLEM DUE TO INITIALIZATION FAILURE) 

Result: 

NG 

See step  2

1. Disconnect the K2 main body ECU (multiplex network body ECU) connector.
2. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   K2-4 (AUT2) - Body ground	Ignition switch ON	11 to 14 V

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) 

Refer to REMOVAL [12/2024 - ]

Result: 

NG 

See step  3

1. Disconnect the b7 power window regulator motor assembly RH (for back door) connector.
2. Disconnect the K2 main body ECU (multiplex network body ECU) connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   b7-4 (AUTO) - K2-4 (AUT2)	Always	Below 1 Ω
   b7-4 (AUTO) or K2-4 (AUT2) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY RH (for Back Door) 

Refer to REMOVAL [12/2024 - ]

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR