Hey guys, encountered an issue this week, with loosing all my heater controls, and ac controls on my ICC, only thing that remains is clock, radio and the recirculating picture flashes 5/6 times when i start car. which to me looks like a diagnose code

Ive done abit of searching on forums, but struggling to find reason why, I have done a scan with a mates tools and it has come up as Can BUS communication error of U1900

It is a single zone unit, my guess is the HIM module is no good? Just wanted to see if there has been common issues with HIM's showing same symptons?

Thanks guys in advance

do reverse lights work ? no = check reverse fuse
checking all fuses with a test light is a good starting point

Fuses are all fine.. not to be a smart a** but what does reverse lights have to do with Air con/Icc. Pretty Sure it would have it's own fuse

Power is supplied to the Him Via Fuses
No 4 Reverse light fuse(15A)
No 27 Cluster Fuse (10A)
Reverse in Red

wow my apologies TedW, i thought you were being smart thats all, there seems to be a few too many of them these days:D. I would of never expected to the him to be on a mixed circuit. Thankyou for the diagram Robert_au.

Ended pulling out the dash on sunday. The connector supplying power to the HIM, was melted and not connecting.
Fixed that, changed the HIM just to be safe and all working good

Thankyou TedW, and Robert, for the info