Fault code C1050 component N65/3
03-07-2019, 05:37 AM
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A208 CLK
Fault code C1050 component N65/3
Anyone any good suggestions please?
Star diagnostic says C1050 component N65/3 (Brake booster vacuum pump control module) is faulty or the lead has open circuit.
We have replaced the module (mb part no 0295450632) with two others which were guaranteed by two separate suppliers to be good but these also show the same fault. The diagnostic of the component with ignition on shows 12v supply, engine running 14v supply. The brake switch registers at the module as functioning when the brake pedal is pressed and released.
However the diagnostic also shows that zero amps are being used (returned? output? I don't understand fully the appropriate terminology to use, sorry).
The fault can be cleared, but it returns immediately when the car is started again and the BAS warning light comes back on again. The ABS system has been checked and is good. In fact, this is the one single error code left, orginally there were many, all those other issues have been fixed now. This code C1050 is all that is left and my garage and I are stumped for how to get rid of it.
Any ideas please? Also, is there a diagram of the pin outs for brake booster module 0295450632 available online somewhere perhaps please? I tried but couldn't find one.
2000 A208 230CLK Kompressor
Star diagnostic says C1050 component N65/3 (Brake booster vacuum pump control module) is faulty or the lead has open circuit.
We have replaced the module (mb part no 0295450632) with two others which were guaranteed by two separate suppliers to be good but these also show the same fault. The diagnostic of the component with ignition on shows 12v supply, engine running 14v supply. The brake switch registers at the module as functioning when the brake pedal is pressed and released.
However the diagnostic also shows that zero amps are being used (returned? output? I don't understand fully the appropriate terminology to use, sorry).
The fault can be cleared, but it returns immediately when the car is started again and the BAS warning light comes back on again. The ABS system has been checked and is good. In fact, this is the one single error code left, orginally there were many, all those other issues have been fixed now. This code C1050 is all that is left and my garage and I are stumped for how to get rid of it.
Any ideas please? Also, is there a diagram of the pin outs for brake booster module 0295450632 available online somewhere perhaps please? I tried but couldn't find one.
2000 A208 230CLK Kompressor
03-08-2019, 03:56 PM
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OK thank you, will do. When I have it, will be Monday morning as the car is at the garage. Where it has been for over a fortnight now. I wasn't in a rush but they are sick of the sight of it I think, though they are too polite to say, as I have been a customer for a very long time (22 years, where does the time go).
03-19-2019, 01:16 PM
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My garage has battled on with this at the weekend. Bless him. For some peace and quiet, he said it's not the kind of job that can be done with constant interruptions and I say fair enough to that. Anyway, we are at a point where I can give an update which maybe of some help to someone else in the future.
I'm quoting some things which are bit out my depth here, but here goes with what I am told as best I can:
"There's about 18ft of loom here and have narrowed it down to about 5 inches of loom, where it passes thru the bulkhead below the modules in the engine bay. The BAS module is getting good voltage and sending out a good signal, which unfortunately dissapates away to nothing down the line. The signal never reaches its destination. This is due to a bad ground in one of the loom wire(s), which in the old days was commonly a black or green or a black /green trace or some such. Nowadays any combination of pink, sky blue purple or you name it can be a ground and a specialist with a sophisticated testing 'box' is needed to make sense of which wire is doing what. Said specialist is coming in this evening."
So there you have it for now. Will keep you updated. Hopefully there is an end to this saga coming, somewhere over the horizon.
I'm quoting some things which are bit out my depth here, but here goes with what I am told as best I can:
"There's about 18ft of loom here and have narrowed it down to about 5 inches of loom, where it passes thru the bulkhead below the modules in the engine bay. The BAS module is getting good voltage and sending out a good signal, which unfortunately dissapates away to nothing down the line. The signal never reaches its destination. This is due to a bad ground in one of the loom wire(s), which in the old days was commonly a black or green or a black /green trace or some such. Nowadays any combination of pink, sky blue purple or you name it can be a ground and a specialist with a sophisticated testing 'box' is needed to make sense of which wire is doing what. Said specialist is coming in this evening."
So there you have it for now. Will keep you updated. Hopefully there is an end to this saga coming, somewhere over the horizon.
06-28-2021, 11:36 PM
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2001 CLK w208 200 Kompressor Avantgarde
hi! Having the exact same problem now! Did you solved? What was it exactly the problem? Thanks!
My garage has battled on with this at the weekend. Bless him. For some peace and quiet, he said it's not the kind of job that can be done with constant interruptions and I say fair enough to that. Anyway, we are at a point where I can give an update which maybe of some help to someone else in the future.
I'm quoting some things which are bit out my depth here, but here goes with what I am told as best I can:
"There's about 18ft of loom here and have narrowed it down to about 5 inches of loom, where it passes thru the bulkhead below the modules in the engine bay. The BAS module is getting good voltage and sending out a good signal, which unfortunately dissapates away to nothing down the line. The signal never reaches its destination. This is due to a bad ground in one of the loom wire(s), which in the old days was commonly a black or green or a black /green trace or some such. Nowadays any combination of pink, sky blue purple or you name it can be a ground and a specialist with a sophisticated testing 'box' is needed to make sense of which wire is doing what. Said specialist is coming in this evening."
So there you have it for now. Will keep you updated. Hopefully there is an end to this saga coming, somewhere over the horizon.
I'm quoting some things which are bit out my depth here, but here goes with what I am told as best I can:
"There's about 18ft of loom here and have narrowed it down to about 5 inches of loom, where it passes thru the bulkhead below the modules in the engine bay. The BAS module is getting good voltage and sending out a good signal, which unfortunately dissapates away to nothing down the line. The signal never reaches its destination. This is due to a bad ground in one of the loom wire(s), which in the old days was commonly a black or green or a black /green trace or some such. Nowadays any combination of pink, sky blue purple or you name it can be a ground and a specialist with a sophisticated testing 'box' is needed to make sense of which wire is doing what. Said specialist is coming in this evening."
So there you have it for now. Will keep you updated. Hopefully there is an end to this saga coming, somewhere over the horizon.
