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
- Idle speed diagnosis
Judge as NG when the following conditions are established.
| Malfunction Criteria | Threshold Value |
|---|---|
| Actual engine speed - Target engine speed | < Value of Map 4 |
| Engine coolant temperature | -40 °C (-40 °F) | -30 °C (-22 °F) | -20 °C (-4 °F) | -10 °C (14 °F) | 0 °C (32 °F) | 10 °C (50 °F) | 20 °C (68 °F) | 30 °C (86 °F) | 40 °C (104 °F) | 50 °C (122 °F) | 60 °C (140 °F) |
| Threshold Value | -235 rpm | -235 rpm | -235 rpm | -235 rpm | -235 rpm | -285 rpm | -300 rpm | -300 rpm | -260 rpm | -260 rpm | -260 rpm |
Time Needed for Diagnosis: 7000 ms
Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
- Final ignition timing diagnosis
Judge as NG when the following conditions are established.
| Malfunction Criteria | Threshold Value |
|---|---|
| Final CIT - CSERS CIT* *:
|
> Value of Map 5 |
| Engine coolant temperature at engine starting | -40 °C (-40 °F) | -30 °C (-22 °F) | -20 °C (-4 °F) | -10 °C (14 °F) | 0 °C (32 °F) | 10 °C (50 °F) | 20 °C (68 °F) | 30 °C (86 °F) | 40 °C (104 °F) | 50 °C (122 °F) | 60 °C (140 °F) |
| Threshold Value | 7.5 °CA | 7.5 °CA | 7.5 °CA | 7.5 °CA | 7.5 °CA | 7.5 °CA | 7.5 °CA | 7.5 °CA | 7.5 °CA | 7.5 °CA | 7.5 °CA |
Time Needed for Diagnosis: 7000 ms
Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
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.