Which engine do you have?
No communication can mean a few things.
1. Bad PCM.
2. Immobilizer locked ( if equipped).
3. Alarm triggerred/malfunctioning.
4. PCM does not have power supply.
Are you able to perform tests with DVOM or testlight and do you have any of these?
Tuesday, July 24th, 2012 AT 12:46 PM