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 

GO TO PROBLEM SYMPTOMS TABLE 

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

Result: 

OK 

See step  2

1. Using the Techstream, check the Data List for proper functioning of the seat buckle switch.
   DRIVER SEAT
   
   

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

   OK

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

Result: 

NG 

See step  5

Result: 

OK 

See step  3

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

Result: 

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 

END (FRONT POWER SEAT SWITCH LH WAS DEFECTIVE) 

Result: 

NG 

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) 

Refer to REMOVAL [09/2015 - ] )

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
   5 (RDC) - 4 (E)	Seat belt fastened	Below 1 Ω
   5 (RDC) - 4 (E)	Seat belt unfastened	10 kΩ or higher

Result: 

NG 

REPLACE FRONT SEAT INNER BELT ASSEMBLY LH 

Refer to REMOVAL [09/2015 - ] )

Result: 

OK 

See step  6

1. Disconnect the c50 front power seat switch connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

2. Disconnect the c46 front seat inner belt connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   c50-4 (DBCL) - c46-5 (RDC)	Always	Below 1 Ω
   c46-4 (E) - Body ground	Always	Below 1 Ω

Result: 

OK 

REPLACE FRONT POWER SEAT SWITCH LH 

Refer to DISASSEMBLY [09/2015 - ] )

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR