I managed to get my Fuel Fired Heater (FFH) to work by using Mongoose with V131 SDD. There is a Service Function in SDD which forces it to fire for a couple of minutes. Did this a few times to make sure it had all the debris from lack of use cleared out. But try as I might I could not get the Auxiliary Heater Control Module (AHCM) to speak to the rest of the network. The icon in the summary page indicated an amber ? which meant the module was there but failed to communicate. So I tried to reprogram the AHCM and got an error message of "PAG SWDL Decode Failed". I think the SWDL means software download but does anyone have an idea what the PAG bit means? And how do I get the AHCM to start talking to the network again? Thanks in advance.

 

I suspect that PAG stands for 'Premiere Automotive Group' because it is used elsewhere in Jaguar's literature.

 

U102768 - Sounds reasonable. Thanks for the help.