Fuel Level Signal: Testing and Inspection

NOTE:
- The Engine Control Module (ECM) receives the fuel level signal from the instrument cluster.
- The processed signal enters at terminal 30 of the ECM and is used to determine the cause of certain recognized malfunctions (e.g. combustion misfires).


- Connect VAG 1598/31 test box at wiring harness to ECM, do not connect ECM.
- Check wire connection from terminal 30 at test box to instrument cluster for open circuit and short circuit to B+/Ground.