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Home >> Pontiac >> 2003 >> Aztek FWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls Self-Diagnostics >> Diagnostic Tests >> DTC P0102: MAF Sensor Circuit - Low Frequency >> Test Description
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Test Description

The numbers below refer to the step numbers in the diagnostic procedures.

  1. 5 -  This step will determine if any mechanical faults have caused this DTC to set.
  2. 7 -  This voltage drop test will determine if high resistance has caused this DTC to set.
  3. 9 -  This step verifies the voltage signal from the PCM to the MAF sensor connector.
  4. 10 -  This step tests the signal circuit of the MAF sensor for a short to another 5-volt reference circuit.
  5. 13 -  This step will determine which portion of the circuit or which component is shorted to ground.
  6. 16 -  This step verifies that the signal circuit is not shorted to any other PCM circuit.

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