Sender For Fuel Gauge -G-, Checking

Sender For Fuel Gauge -G-, Checking

If the fuel gauge is malfunctioning, check whether the signal generated by the fuel level sender is being received by the instrument cluster.
- Connect scan tool.
- Select "Read Measuring Value Block" function 08.
- Select display group 002.

If the fuel level is indicated on the scan tool, the instrument cluster is malfunctioning and must be replaced.
- Removing instrument cluster.

If the fuel level is not indicated on the scan tool, test the signal at the multi-pin connector on the instrument cluster.
- Removing instrument cluster.
- Connect test box VAG 1598 to the blue 32-pin connector using adapter VAG 1598/25.
- Use multimeter to measure the resistance between contacts 5 and 7 (sensor Ground).

Specifications:

Fuel tank empty: approx. 54 ohms (front-wheel drive)
approx. 59 ohms (all-wheel drive)

Fuel tank full: approx. 290 ohms (front-wheel drive)
approx. 282 ohms (all-wheel drive)

- If the values do not match the specifications, test wiring between instrument cluster and fuel gauge sender -G (front-wheel drive / all-wheel drive) or -G169- (all-wheel drive) using wiring diagram.
- If there are no open circuits or short circuits, check fuel gauge sender -G (front-wheel drive / all-wheel drive) or -G169- (all-wheel drive).
- Check sender for fuel gauge.
- If the value obtained matches the specification, the malfunction is in the instrument cluster; replace the instrument cluster.