Checking the Hall Sensor

Checking the Hall sensor

Checking diagnostic trouble codes (DTCs)




If the malfunction is intermittent, it means that the malfunction has been registered at an earlier time but the malfunction no longer remains. Intermittent faults can occur for a number of different reasons. The fault is evaluated depending on how it occurs.
Check if the fault is permanent or intermittent.
Click on the VCT2000 symbol to read off the diagnostic trouble codes (DTCs).





Is the fault intermittent?

Yes - Troubleshooting procedure complete

No - Checking the Hall sensor

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Verification

Hint: After carrying out the repair, check that the fault has been remedied.

- Ignition off.
- Reinstall the connectors, components etc.
- Ignition on.
Check that the control of the roof is working in both directions.

Does operation of the roof work?

Yes - FAULT FOUND

No - Fault-tracing information

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Fault-tracing information
The fault must be diagnosed and remedied. As this is not the case, the fault-tracing has failed.
Exit fault-tracing or try again.

Do you want to exit fault-tracing?

Yes - Exit Fault-tracing

No - Checking diagnostic trouble codes (DTCs)

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Checking the Hall sensor




All checks in fault tracing are directed at hall sensor 9 unless otherwise stated.
If the diagnostic trouble code is permanent, the fault is probably due to a damaged or transferred position sensor.
- Check that the hall sensor is adequately secured.
- Check the connector. Check for contact resistance. Check for oxidation. Check for loose connections.
- Visually check the hall sensor for wear and signs of malfunctioning.
- Check that the hardtop has not been damaged in such a way that the part that the position sensor is to detect does not come within the detection range.
In case of damage, replace hall sensor.

Other information
- Covertible Top Position Switch Covertible Top Position Switch
- Signal specification Signal Specification, Convertible Roof Module (CRM)
- Checking wiring and terminals Checking Wiring and Terminals
For information on cable routing, see associated wiring diagram.





Was a fault detected?

Yes - Verification

No - Checking the Hall sensor

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Checking the Hall sensor




Activate reading out of the position sensor's status by clicking the symbol for VCT2000.
Check that the hall sensor works by placing a nut or screw, of a magnetic material, e.g. iron, against the sensor. Check at the same time that the hall sensor's read-out value changes.
If no malfunction was found, try replacing hall sensor.









Continue - Verification

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