Fault code

5V supply for axle position sensors

(angle sensors for HBA)

1. Short circuit to voltage/ground in the supply leads between the control module and angle sensor for HBA

2. Angle sensor for HBA is faulty

3. The control module is faulty Note:

The 5V supply voltage for the sensors is ensured via terminal 14 on the HBA control module. A fault in this supply lead affects both angle sensors.

Elimination:

Switch off ignition

Pull plug off the angle sensor for HBA, front Switch ignition on

Read the fault memory and observe whether fault code 5 reappears

If fault code 5 does not reappear, the supply lead to the angle sensor for HBA, front, is faulty. Proceed as follows in this case:

Measure voltage between terminal 5 of the sensor plug and ground Measure voltage between terminal 5 and terminal 1 of the sensor Voltmeter display approx. 5 V

Fault, Fault code

Posgjble causes, elimination, notes

In the PST2 menu item Actual values, select Sensor voltage, spring travel 1

Connect a jumper to terminals 4 and 5 of the sensor plug

If no fault is detected in the wires or control module, replace the angle

If fault code 5 reappears after the plug has been removed from the angle sensor for HBA, front, there is a fault in the supply lead to the angle sensor for HBA, rear. Proceed as follows in this case:

Pull plug off the angle sensor for HBA, rear

Measure voltage between terminal 5 of the sensor plug and ground Voltmeter display approx. 5 V

Measure voltage between terminal 5 and terminal of the sensor

Voltmeter display approx. 5 V

In the PST2 menu item Actual values, select Sensor voltage, spring

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 or control module, replace the angle sensor for HBA, rear.

PST2 display approx. 5 V

Fault, Fault code

Possible causes, elimination, notes

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