Odd, Emergency Flashers cause "Service Active Handling" trigger

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Nov 24, 2016 | 08:45 PM

#21

jrprich

Thread Starter

Le Mans Master

Joined: May 2006

Posts: 5,747

Likes: 224

From: Hillsboro Oregon

Hope all had a great Turkey Day!

Update on the 28-TCS 1295 code issue:

I just tried 50W 8ohm resistors today. Started out just installing them on the outboard tail lamps and reinstalling the new LED bulbs. This did prevent the error code 28-TCS 1295 when using all four LED tail lamps ;^)

But I still get code if I use the E-flashers ;^(

So I installed another set of resistors on the inboard tail lamps hoping that the use of resistors on all four tail lamps would allow the E-flashers to work without a code 28-TCS 1295.

But No Luck ;^(

So I will disconnect the second pair of resistors on the inboard tail lights and keep looking for a solution.

Last edited by jrprich; Nov 24, 2016 at 08:46 PM.

Mar 13, 2017 | 07:20 PM

#22

steve_r62

6th Gear

Joined: Mar 2017

Posts: 6

Likes: 0

I was wondering if the op fixed his problem. I have the same problem when I press the e-flasher. My tail lights are all halogen bulbs except the third brake light. Only happens when I press the e-flasher. I couldn't find a new third brake light that wasn't led. I worry about using a resistor since it gets so hot. Maybe he has an led third brake light causing his problem.

Last edited by steve_r62; Mar 13, 2017 at 07:25 PM.

Mar 16, 2017 | 03:20 AM

#23

ferrmaro

Instructor

Joined: Apr 2008

Posts: 199

Likes: 109

Quote:

Originally Posted by steve_r62

I couldn't find a new third brake light that wasn't led. I worry about using a resistor since it gets so hot. Maybe he has an led third brake light causing his problem.

As far as I know, all third brake lights on C5's are LED. Have you verified all your tail lamps are working?

Mar 16, 2017 | 03:29 AM

#24

Rob 02

Safety Car

Joined: Mar 2016

Posts: 3,534

Likes: 432

From: Atlantic Beach FL.

Do you know for a fact that your 3rd brake light is working?

Mar 17, 2017 | 02:37 PM

#25

Bill Curlee

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

Quote:

Originally Posted by jrprich

GCG,

I appreciate your time and suggestion!

I was thinking the same. Just weird that the same exact components were in my 99 for several years with no codes and no issues.
I can't put it back to completely stock regarding LEDs (all around, inside and outside) as my HVAC and Bose also have had LED conversion. So I think I will do it in stages and record what happens starting with the Hyperflash harness.
I really do not want to use resistors

Thanks again,

Jim

Jim

The only monitored lighting circuit are the DRL, brakes and tail signals. The interior lighting will NOT cause any issues with the EBTCM or BCM.

On another note, if ANY of the brake, tail, signal bulb/s have a compromised power or ground circuit, it can cause similar issues. Remember,,,,, Our C5s have a very complex ground system that consist of: ground splice packs (SP) and Chassis ground connectors (G-XXX). Each bulb socket has its OWN ground wire that goes to a SP and then to a chassis ground connector. They are WELL KNOWN to corrode and increase in resistance. If the bulb connections are dirty or loose, same issues. Get a good light and closely inspect each socket.

I just replied to a exterior lighting problem and explain the ground circuit checks for corrosion and such. You can get an OHM Meter and check each bulb socket for proper power and correct ground resistance.

If you find an issue, you can trace that problem back to the source.

Here is that post:

https://www.corvetteforum.com/forums...-gremlins.html

Bill

Last edited by Bill Curlee; Mar 17, 2017 at 02:39 PM.

Mar 17, 2017 | 04:18 PM

#26

jrprich

Thread Starter

Le Mans Master

Joined: May 2006

Posts: 5,747

Likes: 224

From: Hillsboro Oregon

Quote:

Originally Posted by Bill Curlee

Jim

I just replied to an exterior lighting problem and explain the ground circuit checks for corrosion and such. You can get an OHM Meter and check each bulb socket for proper power and correct ground resistance.

If you find an issue, you can trace that problem back to the source.

Bill

Bill,

Thanks for taking the time to pass on this info

I will clean the tail light sockets first and see what happens. Then move to the grounds if cleaning the sockets doesn't do the trick.

Jim

Mar 17, 2017 | 10:09 PM

#27

steve_r62

6th Gear

Joined: Mar 2017

Posts: 6

Likes: 0

Quote:

Originally Posted by ferrmaro

As far as I know, all third brake lights on C5's are LED. Have you verified all your tail lamps are working?

Thanks for the reply. I'll check again but I know they were working. I don't have any problems unless I press the e-flasher. The e-flasher works it just gives the active handling code. The code goes away after I turn it off.