Power Seat Power Easy Access System Function does not Operate [10/2023 - ]: Procedure

1. Check that each function of the power seat operates normally by using the front power seat switch assembly (driver seat).

   Refer to OPERATION CHECK [10/2023 - ]

   Result

   Result	Proceed to
   Power seat functions operate normally	A
   All power seat functions do not operate	B
   One or more power seat motors do not operate	C

Result: 

B 

GO TO OTHER FLOW CHART (Front Power Seat does not Operate with Front Power Seat Switch). Refer to  Front Power Seat does not Operate with Front Power Seat Switch [10/2023 - ] 

Result: 

C 

GO TO OTHER FLOW CHART (One or more Power Seat Motors do not Operate). Refer to  One or more Power Seat Motors do not Operate [10/2023 - ]  

Result: 

A 

See step  2

Refer to INSPECTION [12/2017 - ]

Result

Result: 

NG 

REPLACE FRONT SEAT INNER BELT ASSEMBLY (DRIVER SEAT). Refer to  REMOVAL [10/2023 - ] 

Result: 

OK 

See step  3

1. Disconnect the Q39 front seat inner belt assembly (driver seat) connector.
2. Disconnect the Q28 position control ECU assembly (driver seat) connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   Q39-2 - Q28-20 (DBCL)	Always	Below 1 Ω
   Q39-2 or Q28-20 (DBCL) - Body ground	Always	10 kΩ or higher
   Q39-2 - Body ground	Always	Below 1 Ω

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  4

1. Replace the position control ECU assembly (driver seat) with a new or known good one.

   Refer to REMOVAL [10/2023 - ]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  5

1. Initialize the position control ECU assembly (driver seat).

   Refer to REGISTRATION [10/2023 - ]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  6

1. Check the power seat power easy access system.

   Refer to OPERATION CHECK [10/2023 - ]

   OK

   Power seat power easy access system is normal.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

END (POSITION CONTROL ECU ASSEMBLY (DRIVER SEAT) WAS DEFECTIVE) 

Result: 

NG 

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). Refer to  REMOVAL [10/2023 - ]