Operation CHARM: Car repair manuals for everyone.
Home >> Pontiac >> 2010 >> G3 L4-1.6L >> Repair and Diagnosis >> A L L Diagnostic Trouble Codes ( DTC ) >> Testing and Inspection >> P Code Charts >> P0106

P0106




DTC P0106

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (Diagnostic System Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Strategy Based Diagnosis) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Diagnostic Procedure Instructions) provides an overview of each diagnostic category.

DTC Descriptor
DTC P0106
- Manifold Absolute Pressure (MAP) Sensor Performance

Diagnostic Fault Information





Typical Scan Tool Data





Circuit/System Description

The manifold absolute pressure (MAP) sensor responds to pressure changes in the intake manifold. The pressure changes occur based on the engine load. The engine control module (ECM) supplies 5 volts to the MAP sensor on the 5-volt reference circuit. The ECM provides a ground on the low reference circuit. The MAP sensor provides a signal to the ECM on the MAP sensor signal circuit which is relative to the pressure changes in the manifold. The ECM detects a low signal voltage at a low MAP, such as during an idle or a deceleration. The ECM detects a high signal voltage at a high MAP, such as the ignition is ON, with the engine OFF, or at a wide open throttle (WOT). The MAP sensor is also used to determine the barometric pressure (BARO).

Condition for Running the DTC

* DTCs P0102, P0103, P0107, P0108, P0112, P0113, P0116, P0117, P0118, P0335, or P0336 are not set.
* The engine speed is between 400-6,500 RPM.
* The ECT sensor is between 70-125°C (158-257°F).
* The IAT sensor is between -20 to +125°C (-4 to +257°F).
* The DTC runs continuously when the above conditions are met.

Conditions for Setting the DTC

The ECM detects that the actual MAP signal is not within the predicted range for greater than 15 seconds.

Action Taken When the DTC Sets

DTC P0106 is a Type B DTC.

Conditions for Clearing the DTC

DTC P0106 is a Type B DTC.

Diagnostic Aids

A high resistance condition in the MAP sensor circuits will cause this DTC.

Reference Information
Schematic Reference

Engine Controls Schematics ([1][2]Electrical Diagrams)
Connector End View Reference

Component Connector End Views (Connector Views)
Electrical Information Reference

* Circuit Testing (Circuit Testing)
* Connector Repairs (Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (Wiring Repairs)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (Powertrain Diagnostic Trouble Code (DTC) Type Definitions)
Scan Tool Reference

Control Module References (Programming and Relearning) for scan tool information

Special Tools
* J 23738-A - Vacuum Pump
* J 35555 - Metal Mity-vac

Circuit/System Verification

1. Ignition ON, observe the DTC information with a scan tool. Verify that DTC P0107, P0108, or P0697 is not set.

• If any of the DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle (Diagnostic Trouble Code (DTC) List - Vehicle).

2. Verify none of the following conditions exist:

* Restricted exhaust-Refer to Restricted Exhaust (Restricted Exhaust).
* Engine mechanical condition-For example, low compression or incorrect timing belt installation. Refer to Symptoms - Engine Mechanical (Symptoms - Engine Mechanical).

3. Determine the current vehicle testing altitude. Compare the MAP sensor pressure parameter to the reading in the Altitude Versus Barometric Pressure (Altitude Versus Barometric Pressure) table. The MAP sensor pressure parameter should be within the specified range indicated in the table.
4. Start the engine and observe the scan tool MAP sensor pressure parameter. The MAP sensor pressure parameter should change while starting the engine.
5. Engine running, observe the scan tool MAP Sensor pressure parameter. The reading should be between 26-52 kPa.
6. Snap the throttle while observing the scan tool MAP sensor pressure parameter. The MAP sensor pressure parameter should change rapidly when the throttle position changes.
7. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.

Circuit/System Testing

1. Verify the integrity of the entire air induction system by inspecting for the following conditions:

* Any damaged components
* Loose or improper installation
* An air flow restriction
* Any vacuum leak
* Improperly routed vacuum hoses
* In cold climates, inspect for any snow or ice buildup
* Verify that restrictions do not exist in the MAP sensor port or vacuum source.

2. Ignition OFF, disconnect the harness connector at the MAP sensor.
3. Ignition OFF for 1 minute, test for less than 5 ohm between the low reference circuit terminal 2 and ground.

• If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the ECM.

4. Ignition ON, test for 4.8-5.2 V between the 5-volt reference circuit terminal 1 and ground.

• If less than the specified range, test the 5-volt reference circuit for a short to ground or open/high resistance. If the circuit tests normal, replace the ECM.

• If greater than the specified range, test the 5-volt reference circuit for a short to voltage. If the circuit tests normal, replace the ECM.

5. Verify the scan tool MAP sensor parameter is 0.00 V.

• If greater than the specified value, test the signal circuit terminal 3 for a short to voltage. If the circuit tests normal, replace the ECM.

6. Install a 3 A fused jumper wire between the signal circuit terminal 3 and the 5-volt reference circuit terminal 1. Verify the scan tool MAP sensor parameter is 127 kPa.

• If less than the specified value, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the ECM.

7. If all circuits test normal, test or replace the MAP sensor.

Component Testing

The ignition ON, engine OFF MAP sensor scan tool value should decrease within +/- 4 kPa by the amount of vacuum applied with the J-23738-A or J-35555. For example, at 92 kPa, the MAP sensor scan tool reading should be between 71-79 kPa with 5 in Hg (17 kPa) of vacuum applied to the sensor.





Repair Instructions

Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.

* Manifold Absolute Pressure Sensor Replacement (Service and Repair)
* Control Module References (Programming and Relearning) for ECM replacement, setup, and programming

pro multis · About Operation CHARM