OPERATION
- Refer to Code No. P0202 No. 2 Injector System
.
FUNCTION
- If a misfire occurs while the engine is running, the engine speed changes for an instant.
- The engine-A/T-ECU checks for such changes in engine speed.
TROUBLE JUDGMENT
Check Conditions
- Engine speed is 500 - 6,500 r/min.
- Engine coolant temperature is
-10°C or higher.
- Barometric pressure is 76 kPa or higher.
- Volumetric efficiency is between 30% and 55 %.
- Adaptive learning is complete for the vane which generates a crankshaft position signal.
- While the engine is running, excluding gear shifting, deceleration, sudden acceleration/deceleration and A/C compressor switching.
- The throttle deviation is -0.06 V/10 ms to +0.06 V/10 ms.
Judgment Criteria (change in the angular acceleration of the
crankshaft is used for misfire detection).
- Misfire has occurred more frequently than the limit during the last 200 revolutions
(when the catalyst temperature has been
950°C or higher).
or
- Misfire has occurred 15 times or more in the last 1,000 revolutions (that has been equivalent to approximately 1.5 times the emission standard).
PROBABLE CAUSE
- Ignition system related part(s) failed
- Low compression pressure
- Failed engine-A/T-ECU
)
Q: Is the check result normal?
YES:
Go to Step 3 
.NO: Repair.
)
)
Q: Is the check result normal?
YES:
Go to Step 5 .NO: Repair.
- Check power supply line for damage.
Q: Is the check result normal?
YES:
Go to Step 6 .NO: Repair.
- Check output line for damage.
Q: Is the check result normal?
YES:
Go to Step 7 .NO: Repair.