HELP! headlights stopped working MF switch?
Thread Starter
Drifting
Joined: Sep 2006
Posts: 1,571
Likes: 1
From: st.louis mo.
HELP! headlights stopped working MF switch?
Ok, i need some help. My headlights stpped working about 3weeks ago.Lights will come on but will not pop up or go down(when lifted manually) everything else works foglights,turnsignals,dash lights ect.
First i heard it could be the headlight control module. i found a cf member that had one so i tried his and still nothing. Next i found a thread about the multifunction switch,so i followed this thread
http://forums.corvetteforum.com/c5-t...errerid=229776
Got the switch out today and checked the connections.everything seems to be making contact. My question is are there certain contacts that control the headlight up/down function in the multifunction switch?
Can anyone show me these contacts or wires so maybe i can manually power them up to see if it will work that way? I don't want to take it to the dealer but i'm running out of options. Oh yeah i checked the fuses first.
These are MIKER's pictures,i hope he doesn't mind me usng them if so pm me and i'll remove them.
I appreciate any help and or suggestions
First i heard it could be the headlight control module. i found a cf member that had one so i tried his and still nothing. Next i found a thread about the multifunction switch,so i followed this thread
http://forums.corvetteforum.com/c5-t...errerid=229776
Got the switch out today and checked the connections.everything seems to be making contact. My question is are there certain contacts that control the headlight up/down function in the multifunction switch?
Can anyone show me these contacts or wires so maybe i can manually power them up to see if it will work that way? I don't want to take it to the dealer but i'm running out of options. Oh yeah i checked the fuses first.
These are MIKER's pictures,i hope he doesn't mind me usng them if so pm me and i'll remove them.
I appreciate any help and or suggestions
Thread Starter
Drifting
Joined: Sep 2006
Posts: 1,571
Likes: 1
From: st.louis mo.
Thread Starter
Drifting
Joined: Sep 2006
Posts: 1,571
Likes: 1
From: st.louis mo.
Thanks But it's all chinese to me.I'm handy with a wrench but not so much with blueprints and schematics. I was hoping someone could point out which connector in the mf switch is responsible for the headlight motor. But i will study this and see if i can figure something out 
But it's all chinese to me.I'm handy with a wrench but not so much with blueprints and schematics. I was hoping someone could point out which connector in the mf switch is responsible for the headlight motor. But i will study this and see if i can figure something out
Melting Slicks
Joined: Oct 2007
Posts: 2,383
Likes: 13
From: Kinston North Carolina
C1, Pin A, Circuit #103 should have 12V with headlamps on.
C1, pin C, Circuit 306 should have 12V with headlamps off.
C1, pins B&E, should have 12V at all times. (Circuits # 2940 And 3040
Check that, then post results, ok? (This is on the headlamp door control module.)
If you have a problem with this kind of troubleshooting, call me at 252-559-9787
C1, pin C, Circuit 306 should have 12V with headlamps off.
C1, pins B&E, should have 12V at all times. (Circuits # 2940 And 3040
Check that, then post results, ok? (This is on the headlamp door control module.)
If you have a problem with this kind of troubleshooting, call me at 252-559-9787
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Thread Starter
Drifting
Joined: Sep 2006
Posts: 1,571
Likes: 1
From: st.louis mo.
C1, Pin A, Circuit #103 should have 12V with headlamps on.
C1, pin C, Circuit 306 should have 12V with headlamps off.
C1, pins B&E, should have 12V at all times. (Circuits # 2940 And 3040
Check that, then post results, ok? (This is on the headlamp door control module.)
If you have a problem with this kind of troubleshooting, call me at 252-559-9787
C1, pin C, Circuit 306 should have 12V with headlamps off.
C1, pins B&E, should have 12V at all times. (Circuits # 2940 And 3040
Check that, then post results, ok? (This is on the headlamp door control module.)
If you have a problem with this kind of troubleshooting, call me at 252-559-9787
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
Thanks But it's all chinese to me.I'm handy with a wrench but not so much with blueprints and schematics. I was hoping someone could point out which connector in the mf switch is responsible for the headlight motor. But i will study this and see if i can figure something out
But it's all chinese to me.I'm handy with a wrench but not so much with blueprints and schematics. I was hoping someone could point out which connector in the mf switch is responsible for the headlight motor. But i will study this and see if i can figure something out But it's all chinese to me." 
I would have to condense a year of basic electronics and try to type it into one page in a post to help you fully understand that schematic and the theory that is needed to trouble shoot it.
I hate to have to say that. What I can do is talk you through it. If you can get a digital volt / ohm meter, study up on how to use it to take voltage readings and OHM readings and print off that schematic, I can PM you my phone number and TALK you Thur the process of figuring out where the fault is.
Thats the only way your going to logically be able to fix it. You could replace every part in the circuit and it still might not work. All it takes is ONE bad connection and NO WORKEY!!
So,,,,,,,,,,,,,,,,,,,,look for my PM reply. I saw your request for help PM!
BC
Thread Starter
Drifting
Joined: Sep 2006
Posts: 1,571
Likes: 1
From: st.louis mo.
QUOTE "Thanks But it's all chinese to me."
I would have to condense a year of basic electronics and try to type it into one page in a post to help you fully understand that schematic and the theory that is needed to trouble shoot it.
I hate to have to say that. What I can do is talk you through it. If you can get a digital volt / ohm meter, study up on how to use it to take voltage readings and OHM readings and print off that schematic, I can PM you my phone number and TALK you Thur the process of figuring out where the fault is.
Thats the only way your going to logically be able to fix it. You could replace every part in the circuit and it still might not work. All it takes is ONE bad connection and NO WORKEY!!
So,,,,,,,,,,,,,,,,,,,,look for my PM reply. I saw your request for help PM!
BC
But it's all chinese to me." I would have to condense a year of basic electronics and try to type it into one page in a post to help you fully understand that schematic and the theory that is needed to trouble shoot it.
I hate to have to say that. What I can do is talk you through it. If you can get a digital volt / ohm meter, study up on how to use it to take voltage readings and OHM readings and print off that schematic, I can PM you my phone number and TALK you Thur the process of figuring out where the fault is.
Thats the only way your going to logically be able to fix it. You could replace every part in the circuit and it still might not work. All it takes is ONE bad connection and NO WORKEY!!
So,,,,,,,,,,,,,,,,,,,,look for my PM reply. I saw your request for help PM!
BC
