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Dodge Durango
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Fuel System » Fuel injection system » Description and operation
Battery voltage-pcm input

OPERATION

The battery voltage input provides power to the Powertrain Control Module (PCM). It also informs the PCM what voltage level is supplied to the ignition coil and fuel injectors.

If battery voltage is low, the PCM will increase injector pulse width (period of time that the injector is energized). This is done to compensate for the reduced flow through injector caused by the lowered voltage.

    More about «Description and operation»:

    Powertrain control module (pcm)

    Modes of operation

    Automatic shutdown (asd) relay sense-pcm input

    Battery voltage-pcm input

    Brake switch-pcm input

    Engine coolant temperature sensor-pcm input

    Five volt sensor supplies-primary and secondary

    Ignition circuit sense-pcm input

    Intake manifold air temperature sensor-pcm input

    Manifold absolute pressure (map) sensor-pcm input

    Oil pressure sensor-pcm input

    Oxygen sensor (o2s)-pcm input

    Power grounds

    Power steering pressure switch- pcm input

    Sensor return-pcm input

    Throttle position sensor (tps)-pcm input

    Vehicle speed and distance-pcm input

    Auto shutdown (asd) relay-pcm output

    Ccd bus (+/-) circuits-pcm outputs

    Data link connector-pcm input and output

    Fuel injectors-pcm output

    Fuel pump relay-pcm output

    Idle air control (iac) motor-pcm output

    Oxygen sensor heater relays-pcm output

    Radiator cooling fan relay-pcm output

    Throttle body

    Dodge Durango Service Manual / Fuel System / Fuel injection system / Description and operation / Battery voltage-pcm input

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