Power Seat Power Easy Access System Function does not Operate [09/2015 - ]: Procedure

1. Check that each function of the power seat operates normally by using the front power seat switch (Refer to OPERATION CHECK [09/2015 - ] ).

   OK

   Each function of power seat operates normally by using seat switches.

Result:  NG

NG 

GO TO PROBLEM SYMPTOMS TABLE 

(Refer to PROBLEM SYMPTOMS TABLE [09/2015 - ] )

Result:  OK

OK 

See step  2

1. Check the Data List for proper functioning of the seat buckle switch (Refer to DATA LIST / ACTIVE TEST [09/2015 - ] ).
   DRIVER SEAT
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Driver Seat Buckle SW	Driver seat seat belt usage / ON or OFF	ON: Tongue plate is engaged OFF: Tongue plate is not engaged	-

   OK

   On Techstream screen, each item changes between ON and OFF according to above chart.

Result:  NG

NG 

See step  5

Result:  OK

OK 

See step  3

1. Replace the front power seat switch (Refer to DISASSEMBLY [09/2015 - ] ).

Result:  NEXT

NEXT 

See step  4

1. Check that the power seat power easy access system operates normally when engaging and disengaging the tongue plate of the seat belt with the shift lever in P (Refer to OPERATION CHECK [09/2015 - ] ).

   OK

   Power seat power easy access system is normal.

Result:  OK

OK 

END (FRONT POWER SEAT SWITCH (for Driver Side) IS DEFECTIVE) 

Result:  NG

NG 

REPLACE MAIN BODY ECU 

1. Remove the front seat inner belt assembly (Refer to REMOVAL [09/2015 - ] ).

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

2. Measure the resistance according to the value(s) in the table below.

   Standard resistance

   Tester Connection	Condition	Specified Condition
   1 (+) - 2 (E)	Seat belt fastened	Below 1 Ω
   1 (+) - 2 (E)	Seat belt unfastened	10 kΩ or higher

Result:  NG

NG 

REPLACE FRONT SEAT INNER BELT ASSEMBLY (for Driver Side) 

(Refer to REMOVAL [09/2015 - ] )

Result:  OK

OK 

See step  6

1. Disconnect the e46 switch connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

2. Disconnect the e54 inner belt connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard resistance

   Tester Connection	Condition	Specified Condition
   e46-15 (DBCL) - e54-1 (+)	Always	Below 1 Ω
   e54-2 (E) - Body ground	Always	Below 1 Ω

Result:  OK

OK 

REPLACE FRONT POWER SEAT SWITCH LH 

(Refer to DISASSEMBLY [09/2015 - ] )

Result:  NG

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR