Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Power Seat Power Easy Access System Function does not Operate [12/2024 - ]: Procedure
- CHECK FRONT POWER SEAT OPERATION
- Check that each function of the power seat operates normally by using the front power seat switch LH.
Refer to OPERATION CHECK [12/2024 - ]
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 DIAGNOSIS PROCEDURE (Front Power Seat does not Operate with Front Power Seat Switch)
Refer to Front Power Seat does not Operate with Front Power Seat Switch [12/2024 - ]
Result:
C
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 [12/2024 - ]
Result:
A
See step 2
- Check that each function of the power seat operates normally by using the front power seat switch LH.
- INSPECT FRONT SEAT INNER BELT ASSEMBLY LH
Refer to INSPECTION [12/2024 - ]
Result
Proceed to OK NG Result:
NG
REPLACE FRONT SEAT INNER BELT ASSEMBLY LH
Refer to REMOVAL [12/2024 - ]
Result:
OK
See step 3
- CHECK HARNESS AND CONNECTOR (FRONT SEAT INNER BELT ASSEMBLY LH - POSITION CONTROL ECU ASSEMBLY LH AND BODY GROUND)
- Disconnect the e20 front seat inner belt assembly LH connector.
- Disconnect the e23 position control ECU assembly LH connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition e20-1 - e23-16 (DBCL) Always Below 1 Ω e20-1 - e23-16 (DBCL) - Body ground Always 10 kΩ or higher e20-2 - Body ground Always Below 1 Ω Result
Proceed to OK NG
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
Result:
OK
See step 4
- REPLACE POSITION CONTROL ECU ASSEMBLY LH
- Replace the position control ECU assembly LH with a new or known good one.
Refer to REMOVAL [12/2024 - ]
Result
Proceed to NEXT
Result:
NEXT
See step 5
- Replace the position control ECU assembly LH with a new or known good one.
- PERFORM INITIALIZATION
- Initialize the position control ECU assembly LH.
Refer to REGISTRATION [12/2024 - ]
Result
Proceed to NEXT
Result:
NEXT
See step 6
- Initialize the position control ECU assembly LH.
- CHECK POWER SEAT POWER EASY ACCESS SYSTEM
- Check the power seat power easy access system.
Refer to OPERATION CHECK [12/2024 - ]
OK
Power seat power easy access system is normal.
Result
Proceed to OK NG
Result:
OK
END (POSITION CONTROL ECU ASSEMBLY LH WAS DEFECTIVE)
Result:
NG
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
Refer to REMOVAL [12/2024 - ]
- Check the power seat power easy access system.
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.