Front Power Seat does not Operate with Front Power Seat Switch [09/2014 - ]: Procedure

1. Check that each function of the power seat operates normally by using the position control ECU and switch assembly LH.

   Refer to OPERATION CHECK [09/2014 - 11/2017] , or refer to OPERATION CHECK [11/2017 - ]

   Result

   Result	Proceed to
   All power seat functions do not operate (for Driver Seat)	A
   All power seat functions do not operate (for Front Passenger Seat)	B
   One or more power seat functions do not operate	C

Result: 

B 

See step  4

Result: 

C 

GO TO OTHER DIAGNOSTIC PROCEDURE (One or more Power Seat Motors do not Operate). Refer to  One or more Power Seat Motors do not Operate [09/2014 - ]  

Result: 

A 

See step  2

1. Disconnect the b4 and b5 position control ECU and switch assembly LH connectors.
2. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   b4-7 (+B) - Body ground	Always	11 to 14 V
   b5-3 (IG) - Body ground	Engine switch on (IG)	11 to 14 V
   b5-3 (IG) - Body ground	Engine switch off	Below 1 V

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  3

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   b4-2 (GND) - Body ground	Always	Below 1 Ω

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE POSITION CONTROL ECU AND SWITCH ASSEMBLY LH. Refer to  REMOVAL [09/2014 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

1. Disconnect the a4 and a5 position control ECU and switch assembly RH connectors.
2. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   a4-7 (+B) - Body ground	Always	11 to 14 V
   a5-3 (IG) - Body ground	Engine switch on (IG)	11 to 14 V
   a5-3 (IG) - Body ground	Engine switch off	Below 1 V

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  5

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   a4-2 (GND) - Body ground	Always	Below 1 Ω

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE POSITION CONTROL ECU AND SWITCH ASSEMBLY RH. Refer to  REMOVAL [09/2014 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR