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Home >> Chevrolet >> 2001 >> Venture Base, Van Passenger >> Repair and Diagnosis >> External Pages >> Different car >> Section 230 (Engine Controls Self-Diagnostics) >> Diagnostic Tests >> DTC P0102: MAF Sensor Circuit - Low Frequency >> Test Description

Test Description

WARNING: This page is about a different car, the 2003 Pontiac Aztek and 2003 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.

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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