S3 light flashing

1991 ACURA INTEGRA
116,000 MILES • 4 CYL • 2WD • AUTOMATIC
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CVJUNY
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  • 1 POST
Transmission s3 light is flashing at all the time?
Aug 11, 2008 at 6:19 PM
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KHLOW2008
  • CAR REPAIR CONTRIBUTOR
  • 41,814 POSTS
Hi CVjuny, An error has been detected and the Automatic Transmission Control Unit is sending a signal to the S3 light to let you know.


https://images.2carpros.com/forum/automotive_pictures/192750_IntegraATCU_1.jpg

With ignition switch on, count the number of blinks of LED lights in ATCU window and post here.
Aug 12, 2008 at 9:54 AM
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WERA LIEVANO
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  • 1 POST
My blinkers light flashes two times and when I turn on the s3 my car does not turn on and when it does not blink s3 if it turns on?
Aug 7, 2018 at 12:52 PM
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STRAILER
  • CAR REPAIR CONTRIBUTOR
  • 54,350 POSTS
It sounds like the transmission shaft speed sensor has gone out. Here is a video of how it is replaced and a diagrams below to show the location in your car:

https://youtu.be/f3bETtCIdxM

Check out the diagrams (below). Please let us know what happens.

Cheers, Ken
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Aug 8, 2018 at 11:39 AM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.