Fortunately I had a suitable OBD-USB cable on the way and after a lot of playing around today installing software and familiarising myself with it I have had some success!
Using INPA to read the DSC module error codes provides the following report:
Code: Select all
FEHLERSPEICHER LESEN
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Datum: 14.04.2012 16:48:49
ECU: DSC_MK60
JobStatus: OKAY
Variante: DSC_MK60
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ERGEBNIS: 2 Fehler im Fehlerspeicher !
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5E24 Druck Sensor 1/2 unplausibel
Fehlerhäufigkeit: 1
Logistikzähler : 9
Kilometerstand 63050 km
Fahrzeuggeschwindigkeit 50.00 km/h
Bremslichtschalter 0.00 0/1
Bremsfluessigkeitsschalter 0.00 0/1
ASC/DSC_aktiv (Tasterfunktion) 1.00 0/1
Bremsdruck erkannt 1.00 0/1
ABS-Regelung 0.00 0/1
ASC-Regelung (BMR) 0.00 0/1
ASC-Regelung (AMR) 0.00 0/1
GMR-Regelung (GMR) 0.00 0/1
GMR-Regelung (MMR) 0.00 0/1
CBC-Regelung 0.00 0/1
MSR-Regelung 0.00 0/1
TDR-Regelung 0.00 0/1
SDR-Regelung 0.00 0/1
DBC-Regelung 0.00 0/1
RTA aktiv 1.00 0/1
Run-Up Mode 0.00 0/1
kein passendes Fehlersymptom
Testbedingungen erfuellt
Fehler momentan nicht vorhanden, aber bereits gespeichert
Fehler wuerde das Aufleuchten einer Warnlampe verursachen
Fehlercode: 5E 24 A0 01 09 18 A1 32 28 00 04
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5E20 Druck Sensor 1 elektrisch defekt
Fehlerhäufigkeit: 7
Logistikzähler : 26
Kilometerstand 63050 km
Fahrzeuggeschwindigkeit 54.00 km/h
Bremslichtschalter 0.00 0/1
Bremsfluessigkeitsschalter 0.00 0/1
ASC/DSC_aktiv (Tasterfunktion) 1.00 0/1
Bremsdruck erkannt 0.00 0/1
ABS-Regelung 0.00 0/1
ASC-Regelung (BMR) 0.00 0/1
ASC-Regelung (AMR) 0.00 0/1
GMR-Regelung (GMR) 0.00 0/1
GMR-Regelung (MMR) 0.00 0/1
CBC-Regelung 0.00 0/1
MSR-Regelung 0.00 0/1
TDR-Regelung 0.00 0/1
SDR-Regelung 0.00 0/1
DBC-Regelung 0.00 0/1
RTA aktiv 1.00 0/1
Run-Up Mode 0.00 0/1
kein passendes Fehlersymptom
Testbedingungen erfuellt
Fehler momentan nicht vorhanden, aber bereits gespeichert
Fehler wuerde das Aufleuchten einer Warnlampe verursachen
Fehlercode: 5E 20 A0 07 1A 18 A1 36 08 00 04
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Code: Select all
MEMORY READ ERROR
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Date: 14/04/2012 16:48:49
ECU: DSC_MK60
Job status: OK
Variation: DSC_MK60
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RESULT: 2 errors in error memory!
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5E24 pressure sensor 1/2 implausible
Fault Frequency: 1
Logistics counter: 9
Mileage 63050 km
Vehicle speed 50.00 km / h
Brake light switch 0.00 0/1
Bremsfluessigkeitsschalter 0.00 0/1
ASC / DSC_aktiv (function button) 1.00 0/1
Brake pressure detected 1.00 0/1
ABS control 0.00 0/1
ASC-regulation (BMR) 0.00 0/1
ASC system (AMR) 0.00 0/1
GMR control (GMR) 0.00 0/1
GMR control (MMR) 0.00 0/1
CBC Regulation 0.00 0/1
MSR regulation 0.00 0/1
TDR regulation 0.00 0/1
SDR-regulation 0.00 0/1
DBC regulation 0.00 0/1
RTA active 1.00 0/1
Run-Up Mode 0.00 0/1
no suitable error symptom
Test conditions are met
Error currently not available, but already stored
Error would cause the illumination of a warning light
Error Code: 24 5E A0 18 A1 01 09 32 28 00 04
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5E20 pressure sensor 1 faulty electrical
Error rates: 7
Logistics counters: 26
Mileage 63050 km
Vehicle speed 54.00 km / h
Brake light switch 0.00 0/1
Bremsfluessigkeitsschalter 0.00 0/1
ASC / DSC_aktiv (function button) 1.00 0/1
Brake pressure detected 0.00 0/1
ABS control 0.00 0/1
ASC-regulation (BMR) 0.00 0/1
ASC system (AMR) 0.00 0/1
GMR control (GMR) 0.00 0/1
GMR control (MMR) 0.00 0/1
CBC Regulation 0.00 0/1
MSR regulation 0.00 0/1
TDR regulation 0.00 0/1
SDR-regulation 0.00 0/1
DBC regulation 0.00 0/1
RTA active 1.00 0/1
Run-Up Mode 0.00 0/1
no suitable error symptom
Test conditions are met
Error currently not available, but already stored
Error would cause the illumination of a warning light
Error Code: 20 5E A0 07 1A 18 A1 36 08 00 04
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- Pressure sensor 1 (of the two pressure sensors mounted on the bottom of the brake master cylinder) has been exhibiting electrical faults
- Pressure sensor 1 or 2 has been "implausible". A bit of a cryptic error - I'm guessing that means that the sensor has given an out of range output. How this differentiates from the other error code I don't know. Maybe it's simply intended to be a "universal code" that then points you to the other two?
One small problem though: I can't find any identification of which is sensor 1!
The master cylinder does have a marking above each sensor: "H" above one and "V" above the other. Do these somehow translate to "1" and "2" in German? The TIS even refers to them as the H and V DSC pressure sensors!
So can anybody offer any suggestions?