Test Description

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

1. 3
   
   This step tests for electromagnetic interference (EMI) on the signal circuit of the MAF sensor. A frequency reading with the MAF sensor disconnected indicates an EMI related fault or a poor connection. Disconnecting the MAF sensor may set additional related DTCs.
2. 4
   
   This step eliminates any conditions which can cause a DTC to set with a normally operating MAF sensor.