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Old 07-29-2013, 12:59 PM   #1
3rd Gear Member
Join Date: Mar 2008
Location: GTA
Posts: 468
HID Problem

Just realized the other day that my HIDs are aimed low the other night. Upon closer inspection, it looks like the headlights no longer do their self test for (they no longer go up/down on startup) and are defaulting to the lowest position.

Both headlights went at once. Any ideas on troubleshooting? I've searched but found a lot of conflicting info.
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Old 07-31-2013, 07:31 AM   #2
2nd Gear Member
Join Date: Feb 2012
Location: Toronto
Posts: 159
If you have INPA, you can scan for trouble codes. Something I'd check would be the plastic links on the suspension (right front and left rear, IIRC). If one of these is snapped, it might aim in crazy directions.
cheapthrills is offline   Reply With Quote
Old 08-26-2013, 10:19 AM   #3
3rd Gear Member
Join Date: Mar 2008
Location: GTA
Posts: 468
Finally found some time to get under the car (at least the front, while I was doing control arm bushings!). Here's what I found:
-arm is good, but squeaks through range of motion
-plug is clean and corrosion free
-headlights appear to be doing power on self test again after unplugging/plugging in front level sensor
-lights did power on self test with front sensor plugged in and with front sensor unplugged
-lights adjusted approx every 15 seconds to manually moving sensor arm, but failed to repeat (possibly intermittent sensor failure??)
-noted that 3 of 6 pins (pins 1, 4, 2) are wired at connector, 79 ohms across 1 and 4, nothing across others, resistance remains 79 ohms at all arm positions

I'm thinking it's probably a bad front sensor. What output should I get on this sensor?
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