2005 tdi BEW/PD wagon

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Vondiesel

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I have no check engine light at all. When I pug my ross-tech cable in I get a green light and can communicate with the ABS system. Other than that I cannot enter any other parts of the programmer? Does anyone one have a clue what to look for. There is a aftermarket radio it works fine, I unplugged it hoping that might help, but their was no change.
 
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Uwe

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So you're saying you've run an Auto-Scan and the ONLY thing that talked was the ABS?

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Vondiesel

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Yes the only thing that responds is the ABS. The fuses all look good, new battery, good ground. I have no engine light but all the other lights come up. I'm guessing this has a correlation with a non communication issue.
 
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Uwe

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Any history? When how did this occur? Does the engine start/run?

-Uwe-
 
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Vondiesel

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I bought the car last weekI was told the timing belt was changed. the car runs goods 270 5000 miles on it
 
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Uwe

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I suppose if it were mine, I'd trace the K-line from pin 7 of the diagnostic connector to the corresponding pins on some of the modules. You're going to need a WD and DVM.

-Uwe-
 
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Vondiesel

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there was a tracking device installed in the car that was removed
 
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Uwe

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Then I would definitely be inspecting / tracing the wiring. ;)

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Vondiesel

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the other thing I find weird is there's a car with a key on next to the a b s light
 
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Uwe

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So something like this?



If that's on all the time and the car runs anyway, chances are someone has done immobilizer defeat on your ECU.

-Uwe-
 
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Vondiesel

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can that cause any problems like I'm having
 
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Uwe

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It certainly shouldn't prevent comms with other systems, but it makes me wonder what other skeletons are in this car's closet.

My money is still on wiring damage at or near the K-Line junction.

-Uwe-
 
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Vondiesel

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and where can the K Line junction be found
 
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Jetta 97

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I would put money on Bad Cluster and causing K-line short.
I would disconnect cluster first and see can you communicate with rest of the module.

NOTE :
when you disconnect cluster ECu will not communicate and that is normal because communication goes via W-line in cluster.
 
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Vondiesel

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will a gas cluster work and how do you set up the cluster
 
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Uwe

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Why worry about what cluster will work until you've determined that the one you have is causing this problem? Try what Jetta,97 suggested. Disconnect the existing cluster and see if you have communications with stuff like CCM and Airbags. If you still can't communicate with those modules, then your cluster is not the problem.

-Uwe-
 
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Vondiesel

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thanks for keeping me on track I will do that today.
 
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Vondiesel

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I tried disconnecting the cluster the only thing I can read is the ABS brakes
 
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Vondiesel

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so what's the procedure for changing your cluster and do you need a diesel cluster
 
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Uwe

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Huh? If you disconnected the cluster and the problem still persists, the problem is NOT caused by the cluster.

But while you have the cluster out, how about doing a continuity test between pin 7 of the OBD-II connector and the K-Line pin of the cluster harness? A lack of continuity would confirm that you do indeed have a wiring problem.

-Uwe-
 
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