[Liteace]

I have here a w124 300CE 24, it has the 16 pin under-bonnect diagnostic socket, only a few are occupied, when I run xentry with sd connect it switches to HTH-WIN and it tell me to plu into pin 8


I want to diagnose the the ignition module (EZL), I have tried to get coms with ALL engine modules but cant coms with any Im using the white cable/plug with KL.15 on. Ive also tried the blue cable/plug with K-LINE/LIN but still no luck, Ive also checked the pin 8 of the diag socket to the EZL and thats connected 

what am I doing wrong ?

Thanks 

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[gcs190]

At most you can get something with a pulse counter, hht won't access that KE-Jetronic (I guess) or that old EZL, on the other hand, both are diagnosed with a multimeter by measuring magnitudes easily.

[Liteace]

At most you can get something with a pulse counter, hht won't access that KE-Jetronic (I guess) or that old EZL, on the other hand, both are diagnosed with a multimeter by measuring magnitudes easily.

Tell me more please about diag with multimeter?

[gcs190]

If you want to read the faults from the connector you must use a pulse counter, you can do it with 2 diodes, 2 resistors, a switch and 3 cables., that module did not reach 20 possible errors. Look for the electrical schematic and check the components it had such as the temperature sensor, idle switch, inductive position sensor...it is a very simple system.

[Joe2]

SD Connect C4 is working ok ? 

I had case that "+" power was not present in socket. Only ground was there. 

Need to add it from battery directly, the best both.

I think, K-line cable I have used. Not sure about KL15 - maybe was connected too.

PS.
Not sure that all modules was answering.

[evgenijj]

Such EZL is not-diagnoseable.

[Liteace]

If you want to read the faults from the connector you must use a pulse counter, you can do it with 2 diodes, 2 resistors, a switch and 3 cables., that module did not reach 20 possible errors. Look for the electrical schematic and check the components it had such as the temperature sensor, idle switch, inductive position sensor...it is a very simple system.

I have checked the + and the - at the ELZ, that is good, I have also checked the engine speed sensor at the plug that is also good but Im getting no spark or coil control 

SD Connect C4 is working ok ? 

I had case that "+" power was not present in socket. Only ground was there. 

Need to add it from battery directly, the best both.

I think, K-line cable I have used. Not sure about KL15 - maybe was connected too.

PS.
Not sure that all modules was answering.

Yes I connected direct to battery for power as no + in the 16 pin plug 

Such EZL is not-diagnoseable.

Thanks for the info