New Pioneer head unit and CANBUS adapter power problem

tat007

New Member
Having checked and re-checked all soldered connections, I'm getting random powering down of the unit after a few minutes and on other days, failure to even boot up in the morning. This is a brand new unit with adapter and harness to retain steering wheel functions - T6 150 2016 reg with no prior ICE problems before the upgrade. Any ideas folks?
 
Having checked and re-checked all soldered connections, I'm getting random powering down of the unit after a few minutes and on other days, failure to even boot up in the morning. This is a brand new unit with adapter and harness to retain steering wheel functions - T6 150 2016 reg with no prior ICE problems before the upgrade. Any ideas folks?

What model Pioneer and adapter is it?
 
Did you switch the red and yellow power wires?
 
After some tiresome investigations I have isolated the problem - it was the reversing cmos camera which was piggy backed onto the RED ignition-switched wire for its power. It has since packed up altogether but after disconnecting it entirely, the system is stable, just has no image for reverse! I'm going to look into a replacement as the camera was brand new also. Disappointing but at least I have some tunes etc.
 
Any thoughts on whether the camera should have its own separate power supply from the head unit? I assume these tiny little Chinese things draw negligible current?
 
I have two dash cams front & rear and they've been fine for 3 years now ( completely separate from the media system, I know) but they are Nextbase ones and come with a 2A fused 5V mini transformer for each one and require their own supply from the fuse box. Should my tiny cmos reversing cam also its own fused supply? It seems overkill for a 150mA item?
 
It's a Pioneer SPH DA230DAB and the adapter was a german one I think, same type for a Beetle ( CAN SWC ).
 
After some tiresome investigations I have isolated the problem - it was the reversing cmos camera which was piggy backed onto the RED ignition-switched wire for its power. It has since packed up altogether but after disconnecting it entirely, the system is stable, just has no image for reverse! I'm going to look into a replacement as the camera was brand new also. Disappointing but at least I have some tunes etc.
Some Canbus interfaces put such little current out on the red wire that any other item connected to it will be to much load, it can blow the Canbus box, you could relay it then it will give a great 12v feed to the radio and camera
 
Thanks for the response, I don't quite follow you on the relay bit... would you excuse my ignorance and care to elaborate?
 
A relay is a high power switch

a normal 4 pin 30a automotive relay will do the job

pin 85 to ground (black wire on pioneer loom)
pin 87 to 12v (yellow wire on pioneer loom)
pin 86 to red wire coming out of the Canbus box
pin 30 to the red Wire going to the pioneer and red wire of the camera
 
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