Fault code 3
Supply voltage
Diagnostic conditions
- Ignition on
Possible cause of fault
- Low battery positive voltage
Affected terminals
Terminal 5
Diagnosis/Troubleshooting
Work Instruction 1 - 2
NOTE: The warning light is on as long as the limit value is exceeded or not reached.
HBA Diagnosis
Fault code 4
Axle position sensor, rear (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, rear
2. The sensor linkage is disengaged or faulty
3. Angle sensor for HBA 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, rear
- 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 2 (rear)
- Connect a wiring harness 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.
Alarm System I32; 148
Alarm system I32; 148
Fault code 4
Door lock barrel "closed", short circuit to ground