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.
Work Procedure
Work Procedure (Before Replacing Electric Throttle Control Actuator)
- CHECK DTC
Perform DTC P0101 confirmation procedure. Refer to DTC Description . Is the DTC P0101 displayed?
YES>>
GO TO 2.
NO>>
- Replace electric throttle control actuator. Refer to Removal and Installation .
- After replacing electric throttle control actuator, perform necessary work.
- PRECONDITIONING
Make sure that all of the following conditions are satisfied. Learning will be cancelled if any of the following conditions are missed for even a moment:
- Battery voltage: More than 12.9 V (At idle)
- Engine coolant temperature: 70 - 105°C (158 - 221°F)
- Selector lever: P or N
- Electric load switch: OFF (Air conditioner, headlamp, rear window defogger)
- Steering wheel: Neutral (Straight-ahead position) position
- Vehicle speed: Stopped
- Transmission: Warmed-up
- With CONSULT : Drive vehicle until "ATF TEMP SEN" in "DATA MONITOR" mode of "TRANSMISSION" system indicates less than 0.9 V.
- Without CONSULT : Drive vehicle for 10 minutes.
>>
GO TO 3.
- IDLE AIR VOLUME LEARNING
With CONSULT
- Perform ACCELERATOR PEDAL RELEASED POSITION LEARNING. Refer to Description .
- Perform THROTTLE VALVE CLOSED POSITION LEARNING. Refer to Description .
- Start engine and warm it up to normal operating temperature.
- Select "Idle air volume learning" in "WORK SUPPORT" mode of "ENGINE" using CONSULT.
- Touch "START" and wait 20 seconds.
Is "CMPLT" displayed on CONSULT screen?
YES>>
- Replace electric throttle control actuator. Refer to Removal and Installation .
- After replacing electric throttle control actuator, perform necessary work.
NO>>
Retry from step 2.
Work Procedure (After Replacing Electric Throttle Control Actuator)
- PRECONDITIONING
Check that all of the following conditions are satisfied. Learning will be cancelled if any of the following conditions are missed for even a moment:
- Battery voltage: More than 12.9 V (At idle)
- Engine coolant temperature: 70 - 105°C (158 - 221°F)
- Selector lever: P or N
- Electric load switch: OFF (Air conditioner, headlamp, rear window defogger)
- Steering wheel: Neutral (Straight-ahead position) position
- Vehicle speed: Stopped
- Transmission: Warmed-up (Drive vehicle for 10 minutes).
>>
GO TO 2.
- IDLE AIR VOLUME LEARNING
- Perform ACCELERATOR PEDAL RELEASED POSITION LEARNING. Refer to Description .
- Perform THROTTLE VALVE CLOSED POSITION LEARNING. Refer to Description .
- Start engine and warm it up to normal operating temperature.
- Select "Idle air volume learning" in "WORK SUPPORT" mode of "ENGINE" using CONSULT.
- Touch "START" and wait 20 seconds.
Is "CMPLT" displayed on CONSULT screen?
YES>>
GO TO 3.
NO>>
GO TO 4.
- CHECK IDLE SPEED AND IGNITION TIMING
Rev up the engine two or three times and make sure that idle speed and ignition timing are within the specifications. For specification, refer to IDLE SPEED : Service Data and IGNITION TIMING : Service Data Is the inspection result normal?
YES>>
INSPECTION END
NO>>
GO TO 4.
- DETECT MALFUNCTIONING PART-1
Check the following
- Check that throttle valve is fully closed.
- Check PCV valve operation.
- Check that downstream of throttle valve is free from air leakage.
Is the inspection result normal?
YES>>
GO TO 5.
NO>>
Repair or replace malfunctioning part.
- DETECT MALFUNCTIONING PART-2
Engine component parts and their installation condition are questionable. Check and eliminate the cause of the incident. It is useful to perform "TROUBLE DIAGNOSIS - SPECIFICATION VALUE". Refer to Diagnosis Procedure . If any of the following conditions occur after the engine has started, eliminate the cause of the incident and perform "IDLE AIR VOLUME LEARNING" all over again:
- Engine stalls
- Erroneous idle
>>
INSPECTION END
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.