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. 11 -  This step will determine if the PCM is able to process the frequency signal that it receives from the MAF sensor.
6. 14 -  This step will determine which portion of the circuit or which component is shorted to ground.
7. 17 -  This step verifies that the signal circuit is not shorted to any other PCM circuit.