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EFIE chip troubleshooting
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jared Offline
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Post: #11
RE: EFIE chip troubleshooting
Right now I have the red/positive wire from the EFIE connected into the the same power source as the oxygen sensor. Is this adaquit power for the EFIE? Jared
10-29-2007 09:38 PM
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mike Offline
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Post: #12
RE: EFIE chip troubleshooting
I would think so. I'm assuming you have a heated oxygen sensor, and are connected to the power for the heater, correct? This would be fine as the EFIE draws a negligible amount of power.

If you are in doubt about it, just get power from some other switched source. Any circuit will do, because it just doesn't draw enough power to worry about.

Are you having some kind of trouble? That you're trying to debug?

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10-29-2007 11:21 PM
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wphuang2005 Offline
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Post: #13
RE: EFIE chip troubleshooting
mike Wrote:I would think so. I'm assuming you have a heated oxygen sensor, and are connected to the power for the heater, correct? This would be fine as the EFIE draws a negligible amount of power.

If you are in doubt about it, just get power from some other switched source. Any circuit will do, because it just doesn't draw enough power to worry about.

Are you having some kind of trouble? That you're trying to debug?

I think the EFIE's power supply can be turn on with your fuel saver's switch. When fuel saver off, the EFIE also off but there need a relay inside the EFIE.
03-14-2008 02:24 AM
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mike Offline
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Post: #14
RE: EFIE chip troubleshooting
Our EFIEs have relays in them, so that they will reconnect the sensor to the ECU when they are powered off. So this arrangement will work fine.

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03-14-2008 11:56 AM
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