4. Check MAFS Signal

1. Reconnect the ECM and MAFS connectors.
2. Connect a Hi-Scan (Pro) to the data link connector.
3. Start the engine and monitor the MAFS signals.
   • Refer to DTC P0101  SPECIFICATIONS   for more information. 

Is signal within specification? 

Yes: Proceed with ECM problem procedure.

No: Replace MAFS.