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Old 09-26-2009, 12:09 PM   #1
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Default P1107

P1107

Description
MAP SENSOR CIRCUIT INTERMITTENT LOW VOLTAGE

Manifold Absolute Pressure (MAP) sensor responds to changes
in intake manifold pressure. PCM supplies 5-volt reference and ground
for MAP sensor. MAP sensor provides a signal to the PCM relative to
pressure changes in intake manifold pressure (vacuum). A low voltage
signal, (about 2 volts on VIN K, or 1.5-2.5 volts on VIN 1) is sent to
PCM on signal circuit at closed throttle (high vacuum) idle. A high
voltage signal, about 4 volts or greater on both engines, is sent at
wide open throttle (low vacuum).

Symptoms
You likely won't notice any drivability problems.

Causes

  • MAP sensor intermittently indicates MAP less than
    2.8 psi (0.90 kg/cm).
Possible Solutions
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