Hey guys, This is my first post.
It seems my backlighting for when I have my low beams on blewout (i.e., there is no amber/orange background light). I count 3 blue socket bulbs (85066GA390) and 1 red socket bulb (85068SA000) burnt out. I believe the red socket bulb is a backlight for the LCD? Before I replace these I was wondering if anyone had experienced this before on this model? If so did a fuse blow also?
Recent Car History
March and April 2010 - low beams replaced
July 2010 - PDR of hail damage at body shop
August 2010 - backlight went out after I switched on low beams for first time after I got my car back from body shop.
Multimeter shows ~1.7 volts across terminals for one of the blue socket bulbs when it should be on (assuming on is 14volts). In WI-89 to WI-92, I do not see any fuses shown in the wiring diagram for the control module.
Aug 13, 2010 status update
Pin C9 is approx 12 volts away from C6 on the cluster panel. I am assuming a bad wiring connection (i.e. floating ground).
Swapping relays and fuses has made no difference in voltage across light bulb socket.
Aug 15, 2010 status update
The light dimmer control for the backlight was turned on and it added the resistance which made C9 not equal to C6. This has been corrected and the lights are brighter.
There is no obvious reason for the bulbs going bad but I think its time to replace the car battery.