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.
System Description: Description
ECM controls fuel-air mixture to the rich side to achieve quiet and stable engine revolution.
|
A |
Enrichment rate |
|
a |
Start |
|
b |
Start of post-start enrichment |
|
c |
Start of warm-up enrichment |
|
t |
Time |
|
t1 |
Starting mixture enrichment (Duration: 2 seconds) |
|
t2 |
Post-start enrichment control [Duration e.g. 15 seconds at coolant temperature of 15 deg.C (59 deg.F)] |
|
t3 |
Warm-up enrichment control (Duration depends on the coolant temperature) |
Cold starting mixture enrichment control has functions as follows.
- Starting mixture enrichment control
- Post-start enrichment control
- Warm-up enrichment control
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.
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