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  #1 (permalink)  
Old 14 Mar 2007, 12:30 am
Cindie
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Default "S" light

A green "S" light indicator in a square came on after oil change.
Located by temperature guage. We do not know what it is for.

1990 Honda Accord

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  #2 (permalink)  
Old 14 Mar 2007, 06:22 am
Tegger
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Default Re: "S" light

Cindie <none@000.com> wrote in news:989059_fc97f31d217d9ff719752e67f3a2e985
@autoboardz.com:

> A green "S" light indicator in a square came on after oil change.
> Located by temperature guage. We do not know what it is for.
>
> 1990 Honda Accord
>



There is a problem with the transmission.

Count the blinks from the Transmission Control Unit's LED, located under
the forward part of the passenger's carpet. Pull the carpet back, turn the
ignition to "II" and read the blinks.

The PGM-FI ECU also has an LED, which may also be blinking a code, so count
those too, if needed. The ECU is next to the TCM.

Any unusual symptoms? Strange shifting behavior?

--
Tegger

The Unofficial Honda/Acura FAQ
www.tegger.com/hondafaq/
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  #3 (permalink)  
Old 14 Mar 2007, 12:51 pm
dannd@charter.net
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Default Re: "S" light

On Mar 14, 4:22 am, Tegger <teg...@tegger.c0m> wrote:
> Cindie <n...@000.com> wrote in news:989059_fc97f31d217d9ff719752e67f3a2e985
> @autoboardz.com:
>
> > A green "S" light indicator in a square came on after oil change.
> > Located by temperature guage. We do not know what it is for.

>
> > 1990 Honda Accord

>
> There is a problem with the transmission.
>
> Count the blinks from the Transmission Control Unit's LED, located under
> the forward part of the passenger's carpet. Pull the carpet back, turn the
> ignition to "II" and read the blinks.
>
> The PGM-FI ECU also has an LED, which may also be blinking a code, so count
> those too, if needed. The ECU is next to the TCM.
>
> Any unusual symptoms? Strange shifting behavior?
>
> --
> Tegger
>
> The Unofficial Honda/Acura FAQwww.tegger.com/hondafaq/


Did they do away with the blinking LED from 90 to 91? I had to
troubleshoot the "S" on my 91 for the VSS, and actually had to jumper
the clip behind the passenger kick panel. I was just wondering.

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  #4 (permalink)  
Old 14 Mar 2007, 07:05 pm
Tegger
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Default Re: "S" light

dannd@charter.net wrote in
news:1173894665.784296.162890@b75g2000hsg.googlegr oups.com:


>
> Did they do away with the blinking LED from 90 to 91? I had to
> troubleshoot the "S" on my 91 for the VSS, and actually had to jumper
> the clip behind the passenger kick panel. I was just wondering.
>



From my experiences and the documentation I have, Honda put an LED on the
face of the ECU and TCM up to 1991. This LED was activated whenever the
ignition switch was turned to "II".

For 1992 Honda did an across-the-board revision of all their ECUs and of
error-reading procedures. From that point on, you had to jump the Service
Check connector to read codes from lights on the dashboard. Prior to that,
the Service Check connector was only jumped when you were setting base
ignition timing.

I could be wrong on the above, but I can't find evidence of that.

--
Tegger

The Unofficial Honda/Acura FAQ
www.tegger.com/hondafaq/
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  #5 (permalink)  
Old 14 Mar 2007, 10:57 pm
dannd@charter.net
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Posts: n/a
Default Re: "S" light

On Mar 14, 5:05 pm, Tegger <teg...@tegger.c0m> wrote:
> d...@charter.net wrote innews:1173894665.784296.162890@b75g2000hsg.google groups.com:
>
>
>
> > Did they do away with the blinking LED from 90 to 91? I had to
> > troubleshoot the "S" on my 91 for the VSS, and actually had to jumper
> > the clip behind the passenger kick panel. I was just wondering.

>
> From my experiences and the documentation I have, Honda put an LED on the
> face of the ECU and TCM up to 1991. This LED was activated whenever the
> ignition switch was turned to "II".
>
> For 1992 Honda did an across-the-board revision of all their ECUs and of
> error-reading procedures. From that point on, you had to jump the Service
> Check connector to read codes from lights on the dashboard. Prior to that,
> the Service Check connector was only jumped when you were setting base
> ignition timing.
>
> I could be wrong on the above, but I can't find evidence of that.
>
> --
> Tegger
>
> The Unofficial Honda/Acura FAQwww.tegger.com/hondafaq/


I do remember the ECU having an LED but I know for sure my TCU didn't.
I had to jumper it to get the code. Thanks for the feedback.

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  #6 (permalink)  
Old 15 Mar 2007, 01:08 pm
Thom
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Default Re: "S" light

On Mar 14, 1:30 am, Cindie <n...@000.com> wrote:
> A green "S" light indicator in a square came on after oil change.
> Located by temperature guage. We do not know what it is for.
>
> 1990 Honda Accord
>
> --
> Posted at author's request, usinghttp://www.AutoBoardz.cominterface
> Articles individually verified to usenet standards. Visit URL to contact author/report abuse
> Thread archive:http://www.AutoBoardz.com/quot-quot-...ict208931.html


"Sport" shift button depressed?

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  #7 (permalink)  
Old 15 Mar 2007, 01:24 pm
motsco_
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Posts: n/a
Default Re: "S" light

Thom wrote:
> On Mar 14, 1:30 am, Cindie <n...@000.com> wrote:
>> A green "S" light indicator in a square came on after oil change.
>> Located by temperature guage. We do not know what it is for.
>>
>> 1990 Honda Accord

>
> "Sport" shift button depressed?
>

---------------------------------

Sometimes the most obvious answer is the correct one. :-)

Would there be a link for the online OWNER'S MANUAL for a 1990 accord?

'Curly'
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  #8 (permalink)  
Old 15 Mar 2007, 06:24 pm
Chris Dugan
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Default Re: "S" light

> Sometimes the most obvious answer is the correct one. :-)
>
> Would there be a link for the online OWNER'S MANUAL for a 1990 accord?
>
> 'Curly'


This link might help:

http://www.honda.co.uk/car/owner/workshop.html

Chris


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