Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Ford >> 2005 >> Excursion 6.0 P, RWD >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls - Pinpoint Tests - 6.0L Diesel (99P F450/550) >> Pinpoint Test L: Engine Oil Temperature (EOT) Sensor >> Introduction >> Circuit Functions

Circuit Functions

The EOT sensor is a thermistor-type sensor that has a variable resistance that changes when exposed to different temperatures. When interfaced with the powertrain control module (PCM), it produces a 0 to 5 volt analog signal that indicates the oil temperature.

Cranking Fuel Quantity/Timing Control  - The EOT sensor signal is used to determine the timing and quantity of fuel required to optimize starting over all temperature conditions.

Idle Speed  - At oil temperatures below 70°C (158°F), low idle is incrementally increased to a maximum of 950 RPM.

Temperature Compensation  - Fuel quantity and timing is controlled throughout the total operating range to ensure adequate torque and power is available.

Glow Plug Control  - The glow plug control module (GPCM) and lamp on times are determined by the engine oil temperature.

scientia non olet · About Mike's Workshop Manuals