Electronically controlled fuel injector is a solenoid valve which supplies exactly calculated amount of fuel to engine for optimum conbustion under various engine load and speed. To meat air-fuel ratio required in system, PCM regulates fuel injection quantity as controlling injector solenoid operating duration referring air flow to cylinders and output signals from HO2S. For this precise control, quick response of solenoid is required and for perfect combustion, injection characteristic is important.
Checking output signals from injectors under detecting condition, if an output signal is high, PCM sets P0262. MIL(Malfunction Indication Lamp) turns on when the malfunction lasts till consecutive 2 driving cycle
Item | Detecting Condition | Possible Cause |
DTC Strategy | ● Signal High | ● Poor connection ● Short to battery in harness ● Injector ● PCM |
Enable Condition | ● Engine running state ● 11V ≤ Battery voltage ≤ 16V ● Above conditions are met >0.5sec. ● No disabling faults present | |
Threshold Value | ● Short to battery | |
Diagnosis Time | ● Continuous | |
MIL On Condition | ● 2 driving cycles |
Item | Coil resistance(Ω) |
Injector | 13.8 ~ 15.2Ω( at 20°C/ 68°F) |