Signal From Sender For Fuel Gauge, Checking With VAS 5051

Signal From Sender For Fuel Gauge, Checking

Special Tools and Equipment







- VAG1526A
- VAG1594A
- VAG1598A
- VAG1598/25
- VAS5051 with VAG5051/1

Test requirement:
- VAS5051 tester connected.

Test sequence
If a malfunction of the sender for fuel gauge is detected at instrument cluster, check if the signal at the instrument cluster is Ok.
- Read measuring value block display group 002.







- Check indication in display field -2-.

If the fuel supply is indicated, instrument cluster is malfunctioning.
- Replace instrument cluster.

If the fuel supply is not indicated:
- Check signal at multi-pin harness connector at instrument cluster.
- Remove instrument cluster.
- Connect VAG1598A test box to blue 32-pin multi-pin harness connector using VAG1598/25 adapter.
- Connect multimeter between terminal 5 and 7 (sensor Ground (GND)) for resistance measurement.
- Specification: between approx. 70 ohm (tank empty) and approx. 270 ohm (tank full)

If specified value is not obtained:
- Check wire connection between instrument cluster and sender for fuel gauge according to wiring diagram.

If no malfunctions are found in wires:
- Check sender for fuel gauge.

If specified value is obtained:
- Replace instrument cluster.