DRL / Turn Signal issue
Thread Starter
Pro
Joined: Dec 2005
Posts: 621
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From: Stillwater Minnesota
DRL / Turn Signal issue
I had my battery blow up. Now my daytime running lights and turn signals no longer function. Here is the symptom:
1. Turn ignition on. Dash lights up but back lighting flashes on then off.
2. At same time Body Control Module under foot well clicks a couple times (it's not the relays I checked).
3. Go to use turn signal. It blinks but quickly.
4. Hazards work properly.
5. BCM communicates properly and throws no codes.
1. Turn ignition on. Dash lights up but back lighting flashes on then off.
2. At same time Body Control Module under foot well clicks a couple times (it's not the relays I checked).
3. Go to use turn signal. It blinks but quickly.
4. Hazards work properly.
5. BCM communicates properly and throws no codes.
Race Director
Joined: May 2005
Posts: 15,960
Likes: 21
From: West Norriton PA
St. Jude Donor '08
I had my battery blow up. Now my daytime running lights and turn signals no longer function. Here is the symptom:
1. Turn ignition on. Dash lights up but back lighting flashes on then off.
2. At same time Body Control Module under foot well clicks a couple times (it's not the relays I checked).
3. Go to use turn signal. It blinks but quickly.
4. Hazards work properly.
5. BCM communicates properly and throws no codes.
1. Turn ignition on. Dash lights up but back lighting flashes on then off.
2. At same time Body Control Module under foot well clicks a couple times (it's not the relays I checked).
3. Go to use turn signal. It blinks but quickly.
4. Hazards work properly.
5. BCM communicates properly and throws no codes.
Also check all of your connections inside engine compartment where battery is. The connections that are on the side wall run your turn signals, etc. If they are damaged or dirty you'll have the problems you stated.
Thread Starter
Pro
Joined: Dec 2005
Posts: 621
Likes: 2
From: Stillwater Minnesota
I did some more trouble shooting. The wiring going to the lights looks brand new. I did however, take apart those ground connectors aft of the lights not too long ago. Maybe a ground got bumped loose? Does anybody know which pin is for the turn signals?
I removed the DRL relays in the foot well. After doing so, my rear turn signals work.
When I put the relays back in and start the car, the dash constantly flickers... Then when the headlights are turned on the dash stops flickering. But the turn signals will not work.
Also, my key-less entry just stopped working. I'm not sure if the two are related somehow.
I removed the DRL relays in the foot well. After doing so, my rear turn signals work.
When I put the relays back in and start the car, the dash constantly flickers... Then when the headlights are turned on the dash stops flickering. But the turn signals will not work.
Also, my key-less entry just stopped working. I'm not sure if the two are related somehow.
Race Director
Joined: May 2005
Posts: 15,960
Likes: 21
From: West Norriton PA
St. Jude Donor '08
I did some more trouble shooting. The wiring going to the lights looks brand new. I did however, take apart those ground connectors aft of the lights not too long ago. Maybe a ground got bumped loose? Does anybody know which pin is for the turn signals?
I removed the DRL relays in the foot well. After doing so, my rear turn signals work.
When I put the relays back in and start the car, the dash constantly flickers... Then when the headlights are turned on the dash stops flickering. But the turn signals will not work.
Also, my key-less entry just stopped working. I'm not sure if the two are related somehow.
I removed the DRL relays in the foot well. After doing so, my rear turn signals work.
When I put the relays back in and start the car, the dash constantly flickers... Then when the headlights are turned on the dash stops flickering. But the turn signals will not work.
Also, my key-less entry just stopped working. I'm not sure if the two are related somehow.
Do your DRL's work ?
You really need the schematics to trouble shoot. I bought a set of manuals from Gene and GMpartshouse.com for my car. They have been worth their weight in gold.
Thread Starter
Pro
Joined: Dec 2005
Posts: 621
Likes: 2
From: Stillwater Minnesota
My DRL(s) do not work. I do have the Factory service manual for this car.
I went through the "Diagnostic System Check - Body Control Module" procedure.
Then I went through the "...DRL Relay Circuit" diagnostic procedure.
They both seemed OK. However, still, if I have either the DRL - R or DRL - L relay in the car goes nuts. When the ignition is on and car is running the dash constantly flickers and the turn lights don't work at all. There is a chattering noise coming from down by the BCM. When I turn the head lights on the dash stops flickering. The chattering noise doesn't appear to be a relay but the BCM itself.
Then when I pull the relays back out out the rear turn signals work but fronts don't.
I went through the "Diagnostic System Check - Body Control Module" procedure.
Then I went through the "...DRL Relay Circuit" diagnostic procedure.
They both seemed OK. However, still, if I have either the DRL - R or DRL - L relay in the car goes nuts. When the ignition is on and car is running the dash constantly flickers and the turn lights don't work at all. There is a chattering noise coming from down by the BCM. When I turn the head lights on the dash stops flickering. The chattering noise doesn't appear to be a relay but the BCM itself.
Then when I pull the relays back out out the rear turn signals work but fronts don't.
Race Director
Joined: May 2005
Posts: 15,960
Likes: 21
From: West Norriton PA
St. Jude Donor '08
My DRL(s) do not work. I do have the Factory service manual for this car.
I went through the "Diagnostic System Check - Body Control Module" procedure.
Then I went through the "...DRL Relay Circuit" diagnostic procedure.
They both seemed OK. However, still, if I have either the DRL - R or DRL - L relay in the car goes nuts. When the ignition is on and car is running the dash constantly flickers and the turn lights don't work at all. There is a chattering noise coming from down by the BCM. When I turn the head lights on the dash stops flickering. The chattering noise doesn't appear to be a relay but the BCM itself.
Then when I pull the relays back out out the rear turn signals work but fronts don't.
I went through the "Diagnostic System Check - Body Control Module" procedure.
Then I went through the "...DRL Relay Circuit" diagnostic procedure.
They both seemed OK. However, still, if I have either the DRL - R or DRL - L relay in the car goes nuts. When the ignition is on and car is running the dash constantly flickers and the turn lights don't work at all. There is a chattering noise coming from down by the BCM. When I turn the head lights on the dash stops flickering. The chattering noise doesn't appear to be a relay but the BCM itself.
Then when I pull the relays back out out the rear turn signals work but fronts don't.
Have you tried changing the DRL bulbs or just removing them and seeing what happens ?
Electrical problems are bioch to figure out sometimes.
Thread Starter
Pro
Joined: Dec 2005
Posts: 621
Likes: 2
From: Stillwater Minnesota
I haven't pulled the bulbs yet. Didn't think about that.
Have a feeling the ground connectors aft the headlights may be at fault too. Do you know which pin(s) are for the DRL circuits? I have pulled the connectors appart before. They look clean as a whistle and all the pins seem to be grounded. However, if I wiggle the wires coming out of them the system behaves a little differently.
Thanks!
Have a feeling the ground connectors aft the headlights may be at fault too. Do you know which pin(s) are for the DRL circuits? I have pulled the connectors appart before. They look clean as a whistle and all the pins seem to be grounded. However, if I wiggle the wires coming out of them the system behaves a little differently.
Thanks!
Race Director
Joined: May 2005
Posts: 15,960
Likes: 21
From: West Norriton PA
St. Jude Donor '08
I would PM Bill Curlee as he has this stuff down to a science.
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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
Battery acid can wreak havoc on electrical circuits. It can even cause problems months and years after the initial problem. There are Ground studs, ground connectors, Splice Packs and ground eyelets. The ground connectors and Splice Packs are VERY prone to corrosion. The one behind the battery has issues when the battery leaks. I strongly recommend removing the battery, finding the SP and examining it to see if it is dirty or corroded.
Here is a photo of a SP that was exposed to a battery acid leak. The acid drip directly on to the SP and the SP was exposed to the acid vapors.
The SP is in this area taped to a wiring harness:
Here is what one looks like in place. It will be taped to a harness and the end will need to be pried off to get to the inside:
Same SP disassembled, cleaned and the shorting bar reinstalled:
Locate that SP and see if it is clean. There are two SP's in the front facia area. I would also check them. Thats the first thing that I would do.
Get that accomplished and see if that has any effect on your problem.
BC
Here is a photo of a SP that was exposed to a battery acid leak. The acid drip directly on to the SP and the SP was exposed to the acid vapors.
The SP is in this area taped to a wiring harness:
Here is what one looks like in place. It will be taped to a harness and the end will need to be pried off to get to the inside:
Same SP disassembled, cleaned and the shorting bar reinstalled:
Locate that SP and see if it is clean. There are two SP's in the front facia area. I would also check them. Thats the first thing that I would do.
Get that accomplished and see if that has any effect on your problem.
BC
Last edited by Bill Curlee; Oct 31, 2007 at 09:59 PM.
Thread Starter
Pro
Joined: Dec 2005
Posts: 621
Likes: 2
From: Stillwater Minnesota
Checked the connectors by the battery again as suggested. They are clean as a whistle. I measured 0.6 ohms impedance to ground on the ground connectors.
I have a new advent though... Previously I had thought the blinkers were not working. They actually DO work. Just blink very fast... along with the dash... go figure. The daytime running lights however, do not turn on.
When I turn on the hazards and the dash blinks same interval as the hazards blink. actually everything on the dash blinks, including the A/C.
I'm wondering... How do I tell if a hazard has gone out. Can I pull it and measure some things on it with my digital multi-meter?
Thanks!
I have a new advent though... Previously I had thought the blinkers were not working. They actually DO work. Just blink very fast... along with the dash... go figure. The daytime running lights however, do not turn on.
When I turn on the hazards and the dash blinks same interval as the hazards blink. actually everything on the dash blinks, including the A/C.
I'm wondering... How do I tell if a hazard has gone out. Can I pull it and measure some things on it with my digital multi-meter?
Thanks!
Drifting
Joined: Dec 2005
Posts: 1,720
Likes: 3
From: East Hampton CT
I have a very similar problem on my C5. Front blinkers and the indicators blink quickly and the rears blink slowly. The hazards blink perfectly on all 4 corners and in the display. If I turn the lights on, the front blinkers don't work and rears continue to blink quickly.
I've tried replacing the BCM as well as almost every splice pack in the system. I still have a few to go (this one in the battery is on the list still). Once one of us solve this, I bet it will lead the other to their issue too.
I've tried replacing the BCM as well as almost every splice pack in the system. I still have a few to go (this one in the battery is on the list still). Once one of us solve this, I bet it will lead the other to their issue too.
Race Director
Joined: May 2005
Posts: 15,960
Likes: 21
From: West Norriton PA
St. Jude Donor '08
Checked the connectors by the battery again as suggested. They are clean as a whistle. I measured 0.6 ohms impedance to ground on the ground connectors.
I have a new advent though... Previously I had thought the blinkers were not working. They actually DO work. Just blink very fast... along with the dash... go figure. The daytime running lights however, do not turn on.
When I turn on the hazards and the dash blinks same interval as the hazards blink. actually everything on the dash blinks, including the A/C.
I'm wondering... How do I tell if a hazard has gone out. Can I pull it and measure some things on it with my digital multi-meter?
Thanks!
I have a new advent though... Previously I had thought the blinkers were not working. They actually DO work. Just blink very fast... along with the dash... go figure. The daytime running lights however, do not turn on.
When I turn on the hazards and the dash blinks same interval as the hazards blink. actually everything on the dash blinks, including the A/C.
I'm wondering... How do I tell if a hazard has gone out. Can I pull it and measure some things on it with my digital multi-meter?
Thanks!
I have a very similar problem on my C5. Front blinkers and the indicators blink quickly and the rears blink slowly. The hazards blink perfectly on all 4 corners and in the display. If I turn the lights on, the front blinkers don't work and rears continue to blink quickly.
I've tried replacing the BCM as well as almost every splice pack in the system. I still have a few to go (this one in the battery is on the list still). Once one of us solve this, I bet it will lead the other to their issue too.
I've tried replacing the BCM as well as almost every splice pack in the system. I still have a few to go (this one in the battery is on the list still). Once one of us solve this, I bet it will lead the other to their issue too.
On the side wall next to the fender where the battery is located there are number of connections.
It is connector C146
You will be able to locate it by the following;
It has 10 wires on each side of the connector.
Wire colors A - K Yellow, DK Green, Yellow, Purple, Brown, Orange/Black, Tan/White, Pink/Black, Dk Blue/White, Blk White.
Location (A&B) are turn signal feeds, that run thru tranny harness to the rear.
Location(K) is the ground.
I had bad ground on mine. Once I cleaned it up everything worked.
Drifting
Joined: Dec 2005
Posts: 1,720
Likes: 3
From: East Hampton CT
I noticed this same condition when I did my conversion from an automatic to a six speed.
On the side wall next to the fender where the battery is located there are number of connections.
It is connector C146
You will be able to locate it by the following;
It has 10 wires on each side of the connector.
Wire colors A - K Yellow, DK Green, Yellow, Purple, Brown, Orange/Black, Tan/White, Pink/Black, Dk Blue/White, Blk White.
Location (A&B) are turn signal feeds, that run thru tranny harness to the rear.
Location(K) is the ground.
I had bad ground on mine. Once I cleaned it up everything worked.
On the side wall next to the fender where the battery is located there are number of connections.
It is connector C146
You will be able to locate it by the following;
It has 10 wires on each side of the connector.
Wire colors A - K Yellow, DK Green, Yellow, Purple, Brown, Orange/Black, Tan/White, Pink/Black, Dk Blue/White, Blk White.
Location (A&B) are turn signal feeds, that run thru tranny harness to the rear.
Location(K) is the ground.
I had bad ground on mine. Once I cleaned it up everything worked.
If I can get this straightened out, I'll be VERY happy with my C5. All that will be left is to have my HVAC display soldered (AGAIN, since it's gone dim since I did it last), and my drivers side floppy mirror (held with double sided tape right now, fixed pass side and then some moron at a car wash broke the drivers side on me a few weeks later)... Funny, this is a new HVAC display that was replaced in 01 since my 1997 one failed too. Great job GM!
Race Director
Joined: May 2005
Posts: 15,960
Likes: 21
From: West Norriton PA
St. Jude Donor '08
Thanks! This is where I'm digging next!
If I can get this straightened out, I'll be VERY happy with my C5. All that will be left is to have my HVAC display soldered (AGAIN, since it's gone dim since I did it last), and my drivers side floppy mirror (held with double sided tape right now, fixed pass side and then some moron at a car wash broke the drivers side on me a few weeks later)... Funny, this is a new HVAC display that was replaced in 01 since my 1997 one failed too. Great job GM!
If I can get this straightened out, I'll be VERY happy with my C5. All that will be left is to have my HVAC display soldered (AGAIN, since it's gone dim since I did it last), and my drivers side floppy mirror (held with double sided tape right now, fixed pass side and then some moron at a car wash broke the drivers side on me a few weeks later)... Funny, this is a new HVAC display that was replaced in 01 since my 1997 one failed too. Great job GM!
Thread Starter
Pro
Joined: Dec 2005
Posts: 621
Likes: 2
From: Stillwater Minnesota
Problem solved!!! All works like a charm now.
It was my own stupidity. When I initially had the problems I took my grounds appart. The passenger side ground aft the headlight never got fully connected again. Everything works now.
I only have one last concern. Do relays have to be plugged in with a certain orientation? I had thought they did. However, there are no markings on the relay panels to indicate which way to plug them in.
It was my own stupidity. When I initially had the problems I took my grounds appart. The passenger side ground aft the headlight never got fully connected again. Everything works now.
I only have one last concern. Do relays have to be plugged in with a certain orientation? I had thought they did. However, there are no markings on the relay panels to indicate which way to plug them in.
Cruising
Joined: Apr 2005
Posts: 12
Likes: 0
turn signal issues
I have a different issue with my turn signals. they seem to work for the most part. when they don't work; my inside green light indicator on the dash disappears and won't blink. i can hit the hazard button once and then the turn signals will work again. so every time the turn signals don't work i just have to hit the harzard lights and they will work again. any suggestions.
Racer
Joined: May 2006
Posts: 352
Likes: 42
I have a different issue with my turn signals. they seem to work for the most part. when they don't work; my inside green light indicator on the dash disappears and won't blink. i can hit the hazard button once and then the turn signals will work again. so every time the turn signals don't work i just have to hit the harzard lights and they will work again. any suggestions.
http://forums.corvetteforum.com/show...8&postcount=24
Mine did the same thing until I changed the switch...
DocOhm