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EPS mystery

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Old Feb 23, 2023 | 04:54 AM
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Default EPS mystery

HiI have a 2003 S2000
when I leave the car for a few hours and come back to it my EPS light turns on when I turn the steering wheel. It stays on if I set off to drive.

However, if I drive for about 30m without turning my wheel the EPS light stays off and my steering is fine again. Until I leave it off for a few hours.
I was going to get it checked with a garage but first thought I'd ask here if anyone knows what the heck is happening?
The only issue I know of is my tracking is off, could that be related?
Thank you
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Old Feb 23, 2023 | 05:18 AM
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Tried resetting the EPS? <-- that's a link.

-- Chuck
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Old Feb 23, 2023 | 11:25 AM
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Thank youWould you be able to confirm which pins I need to connect the paperclip to from my attached photo?
the last thing I want to do is damage my ECU
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Old Feb 23, 2023 | 01:37 PM
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Plug pin out bottom of page
Cannot pull code from OBD-2 Port (Answers requested!) - S2KI Honda S2000 Forums

Last edited by noodels; Feb 23, 2023 at 01:49 PM.
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Old Feb 23, 2023 | 01:49 PM
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With the car off, and the wheel straight do the following

1. Using a paper clip or backprobes, connect PIN 9 to PIN 4 on the ODBII connector.
2. Turn the steering wheel 45 degrees to the left
3. Turn the ignition switch on (II)
4. The EPS Light will be on for 4 seconds, when it goes out do step 5
5. Turn the steering wheel Straight, and release
6. The EPS Light will turn on in 4 seconds, when it goes out do step 7
7. Turn the steering wheel 45 degrees to the left
8. The EPS Light will be on for 4 seconds, when it goes out do step 9
9. Turn the steering wheel Straight, and release

now the EPS light will blink twice after you relase the wheel, within 4 seconds. then it will blink 5 times.

If the EPS light stays on, you will have to do this process again.
Another link with more information.



There may be subtle differences between the US and UK OBD2 ports I'm unaware of.

-- Chuck
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