Civic Vx Shift Indicator Light (SIL) problem - Fuelly Forums

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Old 07-16-2008, 09:41 PM   #1
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Civic Vx Shift Indicator Light (SIL) problem

First the problem: My sil stopped working when accelerating the car. I.e. driving. lol. It still lights up at start up so I think the light itself is ok. No cel(s) or anything. Any suggestions? Fuse? Relay?

Second: What is the main purpose of the sil?
1) Is it to show the OPTIMUM time to shift as far as milegage?
2) Is it to say: "ok shift now, you've gone far enough"?

As to the above two questions: please state:
a) Your opinion
b) Your actual experience. lol

Tia!
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Old 07-16-2008, 09:58 PM   #2
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According to the owners manual it's telling you when to shift so that you can get the best FE. They did this because they were afraid that most people would not feel right about cruising at 1000 RPM and would stay in a lower gear.

As far as the SIL, there's not a whole lot to it. It's lit by a single pink wire coming from the ECU. Try retrieving the codes from the ECU. The only reason for it not to illuminate (assuming the bulb is good) is if you're in limp mode for some reason.

There's no relay and it's not on it's own specific fuse.
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Old 07-17-2008, 04:34 AM   #3
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I had the same problem with my VX but the CEL was on too, I ending up replacing the O2 sensor, fixed everything.
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Old 07-17-2008, 07:39 AM   #4
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Whoa! I didn't know that the VX had this! Can you give an example of when it lights up? RPM/MPH Points? I'd like to know more about the VX's engine.
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Old 07-17-2008, 08:05 AM   #5
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Mine would come on around 2200rpms i believe and then also it would come on if you were revving out the motor right before the red line as a warning
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Old 07-17-2008, 08:14 AM   #6
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I currently have to get a new 02 sensor for my VX, but for the short few miles that the 02 works before the CEL comes on the shift indicator will work. CEL comes on, SIL goes off. So, that leads me to believe once you have a new 02 sensor, baring any other problems, the SIL should start to work again.
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Old 07-17-2008, 02:27 PM   #7
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Originally Posted by aalb1 View Post
Whoa! I didn't know that the VX had this! Can you give an example of when it lights up? RPM/MPH Points? I'd like to know more about the VX's engine.
Dk about mph but rpm wise mine comes on around 1700-1900 rpm in any gear. I usually shift before that, hence why I hadn't noticed it was out for a while.
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