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Home >> Ford >> 2004 >> Excursion 6.0 P, RWD >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls - Pinpoint Tests - 6.0L Diesel (99P E-Series & 99P F450/550) >> Pinpoint Test E: Manifold Absolute Pressure (MAP) Sensor, Analog >> Introduction >> Signal Functions
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Signal Functions

The manifold absolute pressure (MAP) sensor is a variable capacitance sensor that, when supplied with a 5-volt reference signal from the powertrain control module (PCM), produces an analog voltage signal that indicates pressure.

Smoke Control  - The MAP signal is used to control smoke by limiting fuel quantity during acceleration until a specified boost pressure is obtained.

Dynamic Injection Timing  - Optimizes injection timing for boost pressure measured.