Wire For Fuel Level Signal, Checking

Wire For Fuel Level Signal, Checking


NOTE:
- The signal helps with cause localization when certain malfunctions are recognized (e.g. combustion misfires).
- 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 VAG1598/31 test box at wiring harness to Engine Control Module (ECM), do not connect ECM. [1][2]Scan Tool Connecting and Initial Checks
- Check following wire connection for open circuit and short circuit to Ground (GND) and B+:


Test box VAG1598/31 Instrument cluster
Socket Terminal
30

- Repair open circuit or short circuit if necessary.