P0106

Diagnostic Chart (Part 1 Of 2):

Diagnostic Chart (Part 2 Of 2):

Schematic:

CIRCUIT DESCRIPTION
The Manifold Absolute Pressure (MAP) sensor responds to changes in intake manifold pressure. The PCM supplies a 5 volt reference and a ground for the MAP sensor. The MAP sensor provides a signal to the PCM relative to the pressure changes in the manifold. With low manifold absolute pressure (high vacuum such as during idle or deceleration), the PCM should detect a low MAP sensor signal voltage. With high manifold absolute pressure (low vacuum such as key ON, engine OFF or wide-open throttle), the PCM should detect a high MAP sensor signal voltage. The PCM tests the MAP sensor to ensure that the sensor is functioning properly. The PCM predicts a MAP sensor value based on throttle position and engine speed. The PCM then compares the predicted value to the actual MAP sensor input. DTC P0106 will set if the actual MAP sensor input does not closely match the predicted value.

CONDITIONS FOR RUNNING THE DTC
^ No TP sensor DTCs are set.
^ Engine speed is steady between 1000-4000 RPM.
^ Throttle angle is steady.
^ Idle air control valve is steady.
^ The A/C compressor clutch is steady.
^ The torque converter clutch is steady.
^ EGR is steady.
^ The vehicle brakes are not applied.

CONDITIONS FOR SETTING THE DTC
The actual MAP sensor value does not closely match the predicted value.

The condition is present for 5 seconds.

ACTION TAKEN WHEN THE DTC SETS
^ The PCM illuminates the Malfunction Indicator Lamp (MIL) during the second consecutive trip in which the diagnostic test runs and fails.
^ The PCM stores the conditions present when the DTC set as Freeze Frame and Fail Records data.

CONDITIONS FOR CLEARING THE MIL/DTC
^ The PCM will turn the MIL OFF after the third consecutive trip in which the diagnostic runs and passes.
^ The history DTC will clear after 40 consecutive warm-up cycles have occurred without a malfunction.
^ The DTC can be cleared by using the scan tool Clear DTC Information function.

DIAGNOSTIC AIDS
For intermittent conditions, refer Intermittent Conditions in Symptoms. Intermittent Conditions

TEST DESCRIPTION
The numbers below refer to the step numbers on the diagnostic table:
2. A throttle position sensor that is stuck in range can cause this DTC to set. Monitor the scan tool while slowly depressing the accelerator pedal.
3. This step tests for a voltage on the throttle position sensor signal circuit.
4. If the scan tool displays 5 volts, the PCM and circuits are OK.
5. A resistance in the throttle position sensor ground circuit can cause this DTC to set. Ensure that the ignition is ON, while performing this test.
8. This step tests for a voltage on the MAP sensor signal circuit.
9. If the scan tool displays 5 volts, the PCM and circuits are OK.
13. This step test the MAP sensors ability to respond to a vacuum. The sensor value should change smoothly as the vacuum increases.