Do you have any fault lights on?

You could try disconnecting the ABS Connector. (Disconnect battery first)
With ABS disconnected, try scan.

Search for "Water ingress" or "CCM"

 

I actually read about disconnecting the abs and I tried it this morning - Still no link. I was originally running the scan tool to see a code that popped up when I cleaned my throttle body but the check engine light cleared on its own when I did a TBA. Now I'm concerned because I have to pass emissions for my state inspection. Even though I have no check engine lights if the computer can't connect to the car I won't be able to pass. So far I have tried cutting the K Wire, turning off the alpine radio and then I completely uninstalled my after market alpine head unit. After that I disconnected my abs unit because it had malfunctioned last year and I wondered if that was interfering. This did no help either. I still cannot get a link. I know the scan tool works, I've run it on other cars several times now to make sure it wasn't the problem.

My next action would be to go to the junkyard and get a stock cassette player for a 99 and install it? I'm running out of ideas at this point. Any ideas?

 

Check fuse 5 also, but it is probably not the problem.

 

As I more or less suggested in my first post, try disconnecting the CCM.

And you could do the CCM / water ingress procedure.

 

I just checked the fuse. It's good. I tried pulling the abs fuse too. Next step drive it into a creek?


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Just saw your second post Tom. I'll do that and get back.


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I will add I've already had to rewire the splices to get my windows, interior lights and door locks to work, but there's always the chance there was more corrosion in the harness that I missed.


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Are all windows, interior lights, and locks working now?

 

Yes they are and everything else seems good. Still no link. I'm at a loss.


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Yes they are and everything else seems good. Still no link. I'm at a loss.

If the any part of the K-Line is shorted to + or _ , it kills the whole line.
The K-Line connects to the modules inc. radio and the OBDII port.

Have a look at this link toward the bottom of the page:

Ross-Tech: VCDS: Afterrmarket Radio Problem

You can use this test to check the K-Line, and find what type of fault exists.

 

Hey thanks for the link. This is definitely my next step.


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Completely unplug the aftermarket radio, and try the scan.

 

That has already been attempted.


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You don't need to install an OEM radio. Making sure the K wire in the radio harness is not connecting to the after market radio is enough.

I'd follow the advice in post #11 and make sure that K line isn't grounding out or shorted to + somewhere in the car.

 

When you disconnected the radio, did you remove all adaptors ?

Have a look at this link toward the bottom of the page:

Ross-Tech: VCDS: Afterrmarket Radio Problem

You can use this test to check the K-Line, and find what type of fault exists.

Most of the info needed to check the K-Line is in this article.



But this is more specific for your needs.

How to check the K-Line:

With radio and adapter un-installed:
Step 1:
You'll need a 1k Ohm (approximately) resistor. Put it between pins 4 and 7 of the
diagnostic connector. Switch Ign. on and use a volt-meter to measure the voltage
between 4 and 7 (in parallel with the resistor).
If it's under 1V, you don't have a short to + 12V.
If it remains near 12V (the resistor will get hot!) you do have a short to + 12V. Remove resistor.
Step 2:
Switch Ign. off and disconnect the battery.
Measure resistance between pins 4 and 7 of the diagnostic connector.
If it is very low you have a short to ground.
If it is very high you have a break or bad connection in the K-Line.


If you have a fault in the K-Line.
You can do the following checks one at a time in any order.
You will need to disconnect modules one at a time (I would start with the CCM) and
check for shorts and bad connections in the wiring, until the K-Line comes good.