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
- Abnormality Judgment
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.
| Malfunction Criteria | Threshold Value |
|---|---|
| |Engine coolant temperature at engine start - Intake air temperature 30 s after engine start| | > Value from Map |
| |Engine coolant temperature at engine start - ambient air temperature at engine start| | > 25 °C (45°F) |
| Ambient air temperature °C (°F) | -30 (-22) | 30 (86) | 45 (113) | 60 (140) |
| |Engine coolant temperature at engine start - Intake air temperature 30 s after engine start| °C (°F) | 12 (21.6°F) | 12 (21.6°F) | 22 (39.6°F) | 22 (39.6°F) |
Time Needed for Diagnosis: 64 ms
Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
- Normality Judgment
Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.
| Malfunction Criteria | Threshold Value |
|---|---|
| When any one of the followings is established: | |
| |Engine coolant temperature at engine start - Intake air temperature 30 s after engine start| | ≤ Value from Map |
| |Engine coolant temperature at engine start - ambient air temperature at engine start| | ≤ 25 °C (45°F) |
Time Needed for Diagnosis: 64 ms
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.