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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 P0102 or P0103 >> Circuit/System Testing >> DTC P0102
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DTC P0102

  1. Inspect the fuse in the ignition 1 voltage circuit of the MAF sensor.
    • If the fuse is open, then test the spliced circuits and the components for a short to ground.
  2. Turn ON the ignition, with the engine OFF.
  3. Measure the battery voltage.
  4. Disconnect the MAF sensor.
  5. Connect a test lamp between the MAF sensor ignition 1 voltage circuit and a good ground.
  6. 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 or the open in the circuit.
  7. 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 short to ground, an open or for a faulty ECM.
    • If the voltage is more than 5.2 volts, test the circuit for a short to voltage or for a faulty ECM.
  8. Turn OFF the ignition and all electrical accessories. Allow sufficient time for the control module to power down before taking a resistance measurement.
  9. 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 or the open in the ground circuit.
  10. Connect the J 38522  to the vehicle. See Special Tools . Refer to Component Testing .
  11. 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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