Component Location
General Description

Based on information from various sensors, the PCM measures the fuel injection amount. The fuel injector is a solenoid-operated valve and the fuel injection amount is controlled by length of time the fuel injector is held open. The PCM controls each injector by grounding the control circuit. When the PCM energizes the injector by grounding the control circuit, the circuit voltage should be low (theoretically 0V) and the fuel is injected. When the PCM de-energizes the injector by opening the control circuit, the fuel injector is closed and circuit voltage should momentarily peak.

DTC Description

Checking output signals from injectors under detecting condition, if an output signal is low, PCM sets P0261. MIL(Malfunction Indication Lamp) turns on when the malfunction lasts till consecutive 2 driving cycle.

DTC Detecting Condition

Item

Detecting Condition

Possible Cause

DTC Strategy

● Signal Low

● Poor connection

● Open or short to ground in power harness

● Open or short to ground in control harness

● Injector

● PCM

Enable condition

● Engine running state

● 11V ≤ Battery voltage ≤ 16V

● Above conditions are met > 0.5sec.

● No disabling faults present

Treshold Vue

● Open or short to ground

Dagnosis Tme

● Continuous

MIL On Condition

● 2 driving cycles

Specification

Item

Coil resistance(Ω)

Injector

11.4 ~ 12.6Ω ( at 20°C/ 68°F)

Schematic Diagram
Signal Waveform
Яндекс.Метрика