Author Topic: Help identify IC  (Read 9646 times)

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Offline TheSteve

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Re: Help identify IC
« Reply #25 on: January 13, 2016, 06:06:36 am »
Pulled out two CCM's and the cable I used to interface with them. They are MKIV so they aren't quite the same. These are 1C0959799C. I only had to apply power and ground on the larger of the two connectors. I also recall that I had to connect via the k-line within 30 seconds of powering up or the module went to sleep. I could also use a programmed remote to wake up the module and then connect to it. As long as you're connected it will stay awake.
I have no idea how close/similar the wiring would be. On the MKIV module the wiring harness colors are orange for ground, positive is red with a black tracer and the K-line is grey with a white tracer.
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Offline neonhomer

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Re: Help identify IC
« Reply #26 on: January 13, 2016, 03:10:47 pm »
Mine is a 1J0 959 799 AJ, with a blue harness plugs and a tan harness plug.

I will have to try to get it all hooked up, and then try communication as soon as I get it up and running.

One of the reasons I posted here on EEV (besides identifying the IC) was so I could figure out what died on this thing, and then either be able to repair it, or prevent it from happening again.

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NeonHomer
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Offline neonhomer

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Re: Help identify IC
« Reply #27 on: January 15, 2016, 03:11:16 am »
Okay.. this is interesting... I have three of these now... Two junkyard ones, and the original one.

I can't talk to all three of them. I did some poking around on the board, and found the CANBus chip. There is power (9v) to it. I have 12vdc on various points on the board.  I still only have around .7vdc to the processor. This thing is almost acting like it is not fully powered up.

Bad thing is, I can identify almost every pin on one harness, but the other one, I can only find two wires... the service manual doesn't show the rest.
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NeonHomer
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Online blueskull

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Re: Help identify IC
« Reply #28 on: January 20, 2016, 04:28:46 pm »
Make sure you are probing with x10 attenuation. x1 will dump too much capacitive load to the xtal, and will likely cause it to cease working. I learned this the hard way.
 


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