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.
Diagnosis Procedure
- CHECK THROTTLE POSITION SENSOR 2 POWER SUPPLY
- Turn ignition switch OFF.
- Disconnect electric throttle control actuator harness connector.
- Turn ignition switch ON.
- Check the voltage between electric throttle control actuator harness connector and ground.
+ - Voltage (Approx.) Electric throttle control actuator Connector Terminal F29 1 Ground 5 V Is the inspection result normal?
YES: GO TO 3.
NO: GO TO 2.
- CHECK THROTTLE POSITION SENSOR 2 POWER SUPPLY CIRCUIT
- Turn ignition switch OFF.
- Disconnect ECM harness connector.
- Check the continuity between electric throttle control actuator harness connector and ECM harness connector.
+ - Continuity Electric throttle control actuator ECM Connector Terminal Connector Terminal F29 1 F26 62 Existed - Also check harness for short to power.
Is the inspection result normal?
YES: Perform the trouble diagnosis for power supply circuit.
NO: Repair or replace error-detected parts.
- CHECK THROTTLE POSITION SENSOR 2 GROUND CIRCUIT
- Turn ignition switch OFF.
- Disconnect ECM harness connector.
- Check the continuity between electric throttle control actuator harness connector and ECM harness connector.
+ - Continuity Electric throttle control actuator ECM Connector Terminal Connector Terminal F29 4 F26 74 Existed Is the inspection result normal?
YES: GO TO 4.
NO: Repair or replace error-detected parts.
- CHECK THROTTLE POSITION SENSOR 2 INPUT SIGNAL CIRCUIT
- Check the continuity between electric throttle control actuator harness connector and ECM harness connector.
+ - Continuity Electric throttle control actuator ECM Connector Terminal Connector Terminal F29 3 F26 76 Existed - Also check harness for short to ground and to power.
Is the inspection result normal?
YES: GO TO 5.
NO: Repair or replace error-detected parts.
- Check the continuity between electric throttle control actuator harness connector and ECM harness connector.
- CHECK THROTTLE POSITION SENSOR
Check the throttle position sensor. Refer to "COMPONENT INSPECTION ".
Is the inspection result normal?
YES: Check intermittent incident. Refer to "INTERMITTENT INCIDENT ".
NO: Replace electric throttle control actuator. Refer to "EXPLODED VIEW ".
NO RELATED
Use the Manual With the Right Hardware
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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.