Fault Code 3

Fault code 3
Axle position sensor, front (angle sensor for HBA)

This fault is stored in the following cases:
1. Short circuit to voltage/ground or open circuit in the supply leads between the control module and angle sensor for HBA, front
2. The sensor linkage is disengaged or faulty
3. Angle sensor for HBA, front, is faulty
4. The control module is faulty

Elimination:
- Visually inspect the sensor linkage and check the plastic holder of the sensor.
- Switch off ignition
- Pull plug off the angle sensor for HBA, front
- Switch ignition on
- Measure voltage between terminal 5 of the sensor plug and ground

Voltmeter display approx. 5 V

- Measure voltage between terminal 5 and terminal 1 of the sensor plug

Voltmeter display approx. 5 V

- In the PST2 menu item Actual values, select Sensor voltage, spring travel 1 (front)
- Connect a jumper to terminals 4 and 5 of the sensor plug

PST2 display approx. 5 V

- If no fault is detected in the wires, replace the angle sensor for HBA.