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B9010 wiring fault?


C_Hemingway
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I have recently upgraded my Celica radio to a B9010 colour touch screen sat nav unit from an Avensis

For some reason the screen switches to night mode with the ignition on but I have not modified the wiring in any way and as far as I am aware there is no ignition feed ( Battery and ACC only )

This is the behaviour ( results from 'secret' diagnostic mode in brackets )

ACC on, lights off = Day mode ( IGN off, TAIL off )

ACC on, lights on = Night mode ( IGN off, TAIL on )

IGN on, lights off = Night mode ( IGN off, TAIL on )

IGN on, Lights on = Night mode ( IGN off, TAIL on )

For some reason the ignition ( position 2 ) is toggling the illumination input

Has anyone else come across this?

 

Also it does have rear camera connectivity ( 20pin + 5pin ) but this is greyed out on the diagnostic screen

Does this mean my unit does not support a reversing camera?

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