Ba read/write pcm error

[EthanMi]

After connecting the openport to the car and trying to a read/write I get a message to cycle the ignition for 3 seconds and start the car again. If I turn the car off during this and try to start it again it flashes an "!" on the dash and wont start unless the openport cable is disconnected and the ignition is completely turned off. 

 

Any ideas?

[Roland@pcmtec]

Is it a genuine cable? We often see issues with the FEPS pins in clone cables. If the FEPS line is staying high and not turning off it will remain in programming mode until the tactrix is disconnected.

Is this car an original Falcon or a Barra transplanted to another vehicle? Sometimes the ignition can be wired up incorrectly such that it doesn't actually cycle the power to the PCM correctly. I would be leaning towards something like this as the cause without more information.

Note if this is urgent please raise a support ticket as we don't always check the forums.

https://www.pcmtec.com/contactus

 

[EthanMi]

58 minutes ago, Roland@pcmtec said:

Is it a genuine cable? We often see issues with the FEPS pins in clone cables. If the FEPS line is staying high and not turning off it will remain in programming mode until the tactrix is disconnected.

Is this car an original Falcon or a Barra transplanted to another vehicle? Sometimes the ignition can be wired up incorrectly such that it doesn't actually cycle the power to the PCM correctly. I would be leaning towards something like this as the cause without more information.

Note if this is urgent please raise a support ticket as we don't always check the forums.

https://www.pcmtec.com/contactus

 

I've purchased the the same cable from the same company and had no issues on a previous falcon so I assume the cable is genuine. 

 

It is a ba falcon that has had a manual conversion and a manual ecu as well as a freshened engine put in. I don't think the ignition has been tampered with at any stage though. 

[Roland@pcmtec]

18 minutes ago, EthanMi said:

I've purchased the the same cable from the same company and had no issues on a previous falcon so I assume the cable is genuine. 

 

It is a ba falcon that has had a manual conversion and a manual ecu as well as a freshened engine put in. I don't think the ignition has been tampered with at any stage though. 

A way to test is when it asks you to key cycle, pull the battery lead for a few seconds then put it back. If the problem goes away then it is not key cycling correctly. If the problem is still there then it could be the cable or something else.