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PSM Failure. Durametric Code 4420


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  • Admin

Possible fault causes
- Short circuit to B+ in wiring harness
- Short circuit to ground in wiring harness
- Short circuit between the signal and ground lines of the rate of turn sensor
- Open circuit in electric circuit
- PSM(TC/ABS) control unit faulty

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  • Admin

The sensors (as I recall) are mounted on the steering column.

The transverse and axial acceleration sensor and the rate-of-turn sensor are integrated into the >combination sensor< housing. If a fault is detected in one of these three sensors, the >combination sensor< must be replaced. The integrated axial acceleration sensor must be calibrated after replacement. 

I am not sure if Durametric can do this calibration. If it does, I would try re-calibration first before replacing any parts.

 

 

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  • 2 months later...

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