SES Light

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Dec 10, 2020 | 10:30 PM

Uhrlto

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From: Reno, NV

SES Light

Quick question, does the SES light remain on at a very very low brightness???
I drove the Vett for the first time last night and noticed it was on but very dim.

Tony

Dec 10, 2020 | 10:45 PM

Nomake Wan

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From: Orange, CA

What year?

I'm going to go ahead and guess 'no', but let's start with the year and go from there!

Dec 11, 2020 | 03:12 AM

aklim

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From: Hartford WI

Are you sure it isn't light from something else? If you think it has an issue, run a scanner on it and see if there are any codes that the ECM reports.

Dec 11, 2020 | 11:50 AM

Uhrlto

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From: Reno, NV

1986 stock

Dec 11, 2020 | 11:52 AM

Uhrlto

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From: Reno, NV

Checked it both ways with the paper clip, code 12 and with my scanner, nothing.

Tony

Dec 11, 2020 | 03:43 PM

vader86

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From: Athens AL

C7 of the Year - Unmodified Finalist 2021

C4 of Year Finalist (performance mods) 2019

It is not supposed to, no.

Dec 11, 2020 | 04:24 PM

Uhrlto

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From: Reno, NV

I think that would be it, as i did replace all the old tungsten bulbs with LED's. I'm assuming (hate that word) , that If I just replace with a reg bulb the problem will go away.

Thanks Barkingdogs (don't you just love handles)

Tony

Dec 11, 2020 | 04:26 PM

Uhrlto

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From: Reno, NV

Thanks for the reply vader, I do think that Barking dogs nailed it.

T

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Dec 11, 2020 | 07:11 PM

Nomake Wan

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From: Orange, CA

Quote:

Originally Posted by ihatebarkingdogs

The bulb has been replaced with an LED. LED's behave this way when the 'ground' is provided by a solid-state junction such as an ECM or CCM. There is always a slight potential to ground, and the LED will illuminate slightly even if the junction is held high (OFF state).

Quote:

Originally Posted by Uhrlto

I think that would be it, as i did replace all the old tungsten bulbs with LED's. I'm assuming (hate that word) , that If I just replace with a reg bulb the problem will go away.

WOW! That was a heck of a guess. Awesome!

Anyway replacing with a regular bulb will work, and in this case so will adding a resistor inline or using an LED with a resistor (I think the ones advertised as CANBUS-compatible interior LEDs have them integrated), as much as I hate adding resistors to LED setups. But it's that 'resistance' in the original bulb that makes a floating circuit less of a problem, so in this case, it's warranted.

Last edited by Nomake Wan; Dec 11, 2020 at 07:11 PM.