DH - Manifold Absolute Pressure (MAP) Sensor, Analog

Signal Functions
The Manifold Absolute Pressure (MAP) sensor is a variable capacitance sensor that, when supplied with a 5-volts 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.

Fault Detection/Management
A MAP signal that is detected by the PCM to be out of range or at an incorrect value for specific conditions will cause the PCM to ignore the MAP signal and operate the engine from an inferred boost pressure signal.






Note
After removing connectors, always check for damaged pins, corrosion, loose terminals, etc.

Map Voltage Table:

NOTE: ±0.3 volt from expected voltage reading is allowed.

DTC Descriptions
P0236 = Turbo boost sensor A circuit performance
P0237 = Turbo boost sensor A circuit low input
P0238 = Turbo boost sensor A circuit high input

DH1 - DH3:

DH4 - DH8:

DH9 - DH12:

DH13 - DH15: