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.
Diagnostic Method
Judge as NG if the criteria below are met.
| Malfunction Criteria | Threshold Value |
|---|---|
| (1) Throttle minimum stop position | ≥ 2.2 V |
| (2) The learned value of accelerator pedal position in back-up RAM area 1 | The learned value of accelerator pedal position in back-up RAM area 2 |
| (3) The sum of back-up RAM at the ECM shut down | The sum of back-up RAM at the ECM powered-on |
| (4) Communication between main CPU and sub CPU | Lost |
| (5) The calculated data of throttle control by main CPU | The calculated data of throttle control by sub CPU |
| (6) The calculated data by main CPU | The calculated data by FPU |
Time Needed for Diagnosis:
- Less than 1 second
- Less than 1 second
- Less than 1 second
- Less than 1 second
- Less than 1 second
- 200 ms
Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.
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