Front Power Seat does not Operate with Front Power Seat Switch [12/2019 - 11/2023]: Procedure

1. Check that each function of the power seat operates normally by using the front power seat switch LH.

   Refer to OPERATION CHECK [12/2019 - ]

   Result

   Result	Proceed to
   All power seat functions do not operate	A
   One or more power seat functions do not operate	B

Result: 

B 

GO TO OTHER DIAGNOSIS PROCEDURE (One or more Power Seat Motors do not Operate). Refer to  One or more Power Seat Motors do not Operate [12/2019 - ]  

Result: 

A 

See step  2

Refer to INSPECTION [12/2019 - 10/2021] , or refer to INSPECTION [10/2021 - ]

Result

Result: 

NG 

REPLACE FRONT POWER SEAT SWITCH LH. Refer to  REMOVAL [12/2019 - 10/2021]  , or refer to  REMOVAL [10/2021 - 10/2022]  , or refer to  REMOVAL [10/2022 - 11/2023] 

Result: 

OK 

See step  3

1. Disconnect the e23 and e25 position control ECU assembly connectors.
2. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   e23-3 (+B) - Body ground	Ignition switch off*1 Always*2	11 to 14 V
   e25-15 (SYSB) - Body ground	Ignition switch off*1 Always*2	11 to 14 V
   e25-1 (IG) - Body ground	Ignition switch ON	11 to 14 V
   e25-1 (IG) - Body ground	Ignition switch off	Below 1 V

   1. *1: for HV Model
   2. *2: for Gasoline Model

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  4

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   e23-2 (GND) - Body ground	Always	Below 1 Ω

   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
   e25-12 (SGND) - e17-20 (E)	Always	Below 1 Ω

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE POSITION CONTROL ECU ASSEMBLY. Refer to  REMOVAL [12/2019 - 10/2022]  , or refer to  REMOVAL [10/2022 - 11/2023] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR