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Toyota Corolla Repair Manual: Random/multiple cylinder misfire detected

Toyota Corolla Repair Manual / Diagnostics / Sfi system / Random/multiple cylinder misfire detected

Dtc p0300 random/multiple cylinder misfire detected

Dtc p0301 cylinder 1 misfire detected

Dtc p0302 cylinder 2 misfire detected

Dtc p0303 cylinder 3 misfire detected

Dtc p0304 cylinder 4 misfire detected

Inspection procedure
Hint: handheld tester only: narrowing down the trouble area is possible by performing a/f control active test (heated oxygen sensor or other trouble areas can be distinguished). Perform ac ...

Circuit description
When a misfire occurs in the engine, hydrocarbons (hc) enter the exhaust in high concentrations. If this hc concentration is high enough, there could be an increase in exhaust emissions levels. H ...

Other materials:

Eco drive mode (if equipped)
Press the switch. Suitable for enhancing the fuel economy, because the torque corresponding to the accelerator pedal depression amount can be generated more smoothly than it is in normal conditions and the operation of the air conditioning system (heating/cooling) will be minimized. Press th ...

Replacement
Hint: installation is according to the reverse order of the removal. 1. Remove rear door weatherstrip rh 2. Remove rear door weatherstrip lh 3. Remove rear seat cushion assy (, 728) 4. Remove rear seat back assy (fixed type rear seat) 5. Remove separate type rear seat back assy (separated ...

Evap monitor (vacuum pressure monitor) (continued)
Preconditions The monitor will not run unless: mil is off. Fuel level is approximately 1/2 to 3/4. Altitude is 7800 feet (2400 m) or less.* Engine coolant temperature (ect) is between 40f and 95f (4.4 C and 35 C). Intake air temperature (iat) is between 40f and 95 f (4 ...

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