Dodge Durango

 Service Manual

Fuel System » Fuel injection system » Description and operation
Five volt sensor supplies-primary and secondary

DESCRIPTION

Two different Powertrain Control Module (PCM) five volt supply circuits are used; primary and secondary.

OPERATION

These 2 circuits will:

• supply the required 5 volt power source to the Crankshaft Position (CKP) sensor.
• supply the required 5 volt power source to the Camshaft Position (CMP) sensor.
• supply a reference voltage for the Manifold Absolute Pressure (MAP) sensor.
• supply a reference voltage for the Throttle Position Sensor (TPS) sensor.
• supply the required 5 volt power source to the oil pressure sensor.
• supply the required 5 volt power source for the Vehicle Speed Sensor (VSS) (if equipped).
• supply the 5 volt power source to the transmission pressure sensor (if equipped with an RE automatic transmission).

Fuel level sensor-pcm input

DESCRIPTION

The fuel level sensor (fuel gauge sending unit) is located on the fuel pump module.

OPERATION

Refer to Fuel Gauge Sending Unit in the Fuel Delivery section for information.

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