1995 Cirrus Engine Control Unit replacement

I managed to verify that the ECU on my '95 Cirrus (2.5L V6) was bad. I
found a guaranteed salvage part for $145 since the dealer wanted $700 for
just the ECU.

Once installed all of the codes and run problems of the car disappeared and
I was happy. Then after I closed up the car and went in to clean up my wife
went out to get something and when she touched the door the car starting
honking like crazy. I removed the battery connection and it stopped; it did
the same thing again when reconnected.

I didn't have an alarm system before. Have I left something out of the
sequence in the replacement of the ECU? like programming? If so, can I
manage it somehow or do I need to get someone to do something? Who can
normally do this for me or what kind of tool will I need to do it myself?

Regards.

 

Never install a used PCM or any other kind of module unless it is the same
part number, That PCM was for a vehicle that had an alarm equipped. These
computers communicate with other modules over the bus and learn what
others have. you may have made your problem worse.
There is now a possibility that you need a BCM and the correct PCM for that
vehicle.

Glenn Beasley
Chrysler Tech

 

OK. I'll verify the numbers. I thought I had matched them. A local
mechanic tells me that I need the computer "flashed". I know what that
means when I work on my laptop or desktop computers. Is that even within
my reach? does it require a special tool?

But beyond that, if I did mess up the BCM, what symptoms should I be
watching for?

Thanks.

 

Flashing wont take care of that problem, install the correct module for the
application you have,