Solution of MB Star C3 SD Connect multiplexer Fault (1.1)-1.501.9504



Mercedes diagnostic machine MB STAR C3 support 1980-up to now cars bus truck sprint smart.One customer get the error (1.1)-1.501.9504 when he try to communicate with the car ,obd2repair share you how to solve MB Star C3 SD Connect multiplexer Mercedes star diagnois Compact 3 Fault (1.1)-1.501.9504

 MB Star C3 SD Connect multiplexer Mercedes star diagnois Compact 3

Fault (1.1)-1.501.9504
Initialization of diagnosis multiplexer failed. Possible causes: The link between the diagnosis multiplexer and the diagnostic socket is interrupted. The link between the diagnosis multiplexer and the diagnostic unit is interrupted. The voltage supply at the diagnostic socket (circuit 30 and (or) circuit 31) is faulty.

 Error codes analysis:

error code 95xx: C3 mux settings is committed
error code 9551: means no C3 mux is connected
error code 9504: means Star C3 is connected and error in mux
error code 9500: means C3 is connected but error in COM settings to COM2
error code 99xx: means C4 mux settings is committed

So the error is 9504 means mux is read by software and mux is burned

But C3 mux is working on 3 main communication objects:
1- CanBus
2- K-line
3- L-line

your mux may still work if one circuit is burned like CanBus circuit burned but still you have other 2 working on K-line and L-line
Detailed possibilities of unsuccessful communication:

1 COM port setup improperly or broken COM serial on the laptop

2 New models that old STAR C3 cannot support

3 Something wrong with C3 diagnostic mux

4 Something wrong with cables

Thus,obd2rpair shop advice to check your mux on other laptop.Ot you may find your com serial on your laptop is broken or do opposite check other mux on your laptop to find what is wrong if all is ok,that is two possible occasions.

1.the model cannot be supported by star c3, you should buy MB SD Connect C4
2.you can buy a new one software HDD which we test well.

This article is compiled by www OBD2repair com, if you have any advice on it, pls feel free to contact OBD2repair - China OBD2 repair Tool Automotive Diagnostic Tools Car Key Programmer OBD2 ECU chip tuning tool Center.
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