Symptom:
P0108-MAP SENSOR HIGH
When Monitored and Set Condition:
P0108-MAP SENSOR HIGH
When Monitored: Ignition on. TP sensor voltage less than 1.2 volts for greater than 1.7
seconds. Battery voltage greater than 10 volts
Set Condition: The MAP sensor signal voltage is greater than 4.92 volts for 1.7 seconds.
One trip Fault.
POSSIBLE CAUSES
MAP SENSOR VOLTAGE ABOVE 4.9 VOLTS
(K1) MAP SIGNAL CIRCUIT SHORTED TO (K7) 5 VOLT SUPPLY CIRCUIT
(K1) MAP SIGNAL CIRCUIT SHORTED TO BATTERY VOLTAGE
MAP SENSOR INTERNAL FAILURE
(K1) MAP SIGNAL CIRCUIT OPEN
(K4) SENSOR GROUND CIRCUIT OPEN
PCM
TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRBIIIt, read the MAP Sensor voltage.
Is the voltage above 4.9 volts?
All
Yes → Go To 2
No → Refer to the INTERMITTENT CONDITION symptom in the
Driveability category.
Perform POWERTRAIN VERIFICATION TEST VER-5-NGC.
2 Turn the ignition off.
Disconnect the MAP Sensor harness connector.
Disconnect the PCM harness connector.
Measure the resistance between the (K1) MAP Signal circuit and the (K7) 5-Volt
Supply circuit in the MAP Sensor harness connector.
Is the resistance below 100 ohms?
All
Yes → Repair the (K1) MAP Signal circuit for a short to the (K7) 5 volt
Supply circuit.
Perform POWERTRAIN VERIFICATION TEST VER-5-NGC.
No → Go To 3
58
DRIVEABILITY - NGC
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