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Home >> Pontiac >> 2006 >> G6 Base, 2.4 B >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - 2.4L - DTC P0010 To DTC P0341 >> DTC P0101 or P1101 >> Circuit/System Testing
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Circuit/System Testing

  1. Turn ON the ignition, with the engine OFF.
  2. Measure the battery voltage.
  3. Disconnect the MAF sensor.
  4. Connect a test lamp between the MAF sensor ignition 1 voltage circuit and a good ground.
  5. With the test lamp still connected, measure for battery voltage between the ignition 1 voltage circuit and a good ground.
    • If the voltage is not within 1.5 volts of battery voltage, repair the high resistance in the circuit.
  6. Measure for a proper range of 4.9-5.2 volts between the MAF sensor signal circuit and a good ground.
    • If the voltage is less than 4.9 volts, test the circuit for a high resistance.
    • If the voltage is within the specified range, test the circuit for a short to the IAT signal circuit or to any other 5-volt reference circuit.
  7. Turn OFF the ignition and all electrical accessories. Allow sufficient time for the control module to power down before taking a resistance measurement.
  8. Measure for a proper value of less than 5 ohms of resistance between the ground circuit of the MAF sensor and a good ground.
    • If the resistance is more than 5 ohms, repair the high resistance in the ground circuit.
  9. Connect the J 38522  to the vehicle. See Special Tools . Refer to Component Testing .
  10. Start the engine and observe the MAF Sensor parameter for a proper range of 4,950-5,025 Hz.
    • If the MAF Sensor parameter is not within the specified range, replace the ECM.
    • If the MAF Sensor parameter is within the specified range, replace the MAF sensor.
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