pcmhacking.net

Sometimes they get stuck in bootloader with PCM needing to be completely disconnected from power & earth from what I remember with 1 time I had an issue with failing half way through a read 1 time & what VL400 told me to do, not sure if it's the same issue though!

hsv08 wrote:

antus wrote:Are you power cycling it between attempts? I wouldnt trust its state without a power cycle if its been unlocked and some code loaded in to ram on the first attempts. That potentially has put it in some unworkable state where tests are no longer valid.

Power cycling as in key off reconnect? Or batt off PCM drained then re connect?

I think a full battery disconnect is needed. Just disconnect the battery for 5mins and then reconnect. ECU probably needs a full power cycle.

Tazzi wrote:

hsv08 wrote:

antus wrote:Are you power cycling it between attempts? I wouldnt trust its state without a power cycle if its been unlocked and some code loaded in to ram on the first attempts. That potentially has put it in some unworkable state where tests are no longer valid.

Power cycling as in key off reconnect? Or batt off PCM drained then re connect?

I think a full battery disconnect is needed. Just disconnect the battery for 5mins and then reconnect. ECU probably needs a full power cycle.

Ok I will try that this weekend. Thanks for all this help boys. Nothing but dramas with this car. Bring back the v8s!!