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2011 Ram 2500 headlight issue
- HD/MW Canada
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- Chad
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- I am not a parts changer.
8 years 9 months ago #15001
by Chad
"Knowledge is a weapon. Arm yourself, well, before going to do battle."
"Understanding a question is half an answer."
I have learned more by being wrong, than I have by being right.
Replied by Chad on topic power door locks
"Knowledge is a weapon. Arm yourself, well, before going to do battle."
"Understanding a question is half an answer."
I have learned more by being wrong, than I have by being right.
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- Tyler
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- Full time HACK since 2012
8 years 9 months ago - 8 years 9 months ago #15014
by Tyler
Replied by Tyler on topic power door locks
Hey HD/MW Canada! I think your title for this thread got confused with your other thread? I edited it for clarity, hope you don't mind. 
If both the low and high are inop, then it's possible there's a ground issue between the headlight and the TIPM. I'd suggest taking three voltage readings at the headlight with the headlights on. White/dark blue should show 12V with the lows on, and the white/light green should show 12V with the highs on. The black/light blue is the ground for both, and should never have more than .5V at any time.
If you see high voltage on the black/light blue, you're either looking at high resistance in that wire, or a bad TIPM.
If both the low and high are inop, then it's possible there's a ground issue between the headlight and the TIPM. I'd suggest taking three voltage readings at the headlight with the headlights on. White/dark blue should show 12V with the lows on, and the white/light green should show 12V with the highs on. The black/light blue is the ground for both, and should never have more than .5V at any time.
If you see high voltage on the black/light blue, you're either looking at high resistance in that wire, or a bad TIPM.
Last edit: 8 years 9 months ago by Tyler.
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- cheryl hartkorn
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