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Home >> Ford >> 2009 >> Flex Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 126 (Engine Controls - Pinpoint Tests - 6.0L Diesel (99P F450/550)) >> Pinpoint Test E: Manifold Absolute Pressure (MAP) Sensor >> Introduction >> Signal Functions

Signal Functions

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The 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 the fuel quantity during acceleration until a specified boost pressure is obtained.

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

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