Test Description
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2003 Pontiac Grand Prix, 2003 Pontiac Bonneville, 2003 Chevrolet Monte Carlo, 2003 Chevrolet Impala, and 2003 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.
The numbers below refer to the step number of the diagnostic procedure.
- 5
This step will determine if any mechanical faults have caused this DTC to set. - 7
This voltage drop test will determine if high resistance has caused this DTC to set. - 9
This step verifies the signal circuit from the MAF sensor electrical connector to the PCM. - 10
This step tests the signal circuit of the MAF sensor for a short to another 5-volt reference circuit. - 12
This step will determine which portion of the circuit or which component is shorted to ground. - 15
This step verifies that the signal circuit is not shorted to any other PCM circuit.