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How can I test a MAP sensor?

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Old 10-04-2011, 11:33 AM
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Default How can I test a MAP sensor?
96 civic EX

There is an easy way to test a MAP sensor with an ohm meter, if so how?

Also what is the proper working ohm range?
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Old 10-04-2011, 11:37 AM
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Default Re: How can I test a MAP sensor?
You MUST provide all pertinent information about your car and engine. Failure to do so may result in thread closure.

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Old 10-04-2011, 11:40 AM
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Default Re: How can I test a MAP sensor?
Originally Posted by RonJ@HT
You MUST provide all pertinent information about your car and engine. Failure to do so may result in thread closure.

Modified orig post.
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Old 10-04-2011, 11:45 AM
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Default Re: How can I test a MAP sensor?
Measure the output voltage to body ground from the MAP sensor with:

1) The key in ON(II)/engine off (should be ~3V)

2) The engine idling (should be <1V)
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Old 10-04-2011, 11:47 AM
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Default Re: How can I test a MAP sensor?
Originally Posted by RonJ@HT
Measure the output voltage to body ground from the MAP sensor with:

1) The key in ON(II)/engine off (should be ~3V)

2) The engine idling (should be <1V)
You unplug the connector right, I have not looked at it yet, is there metal terminals inside of it to probe? if so which one?

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Old 10-04-2011, 11:50 AM
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Default Re: How can I test a MAP sensor?
Nothing is unplugged. Back probe the Red/Grn wire in the MAP sensor connector.
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Old 10-04-2011, 11:52 AM
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Default Re: How can I test a MAP sensor?
Originally Posted by RonJ@HT
Nothing is unplugged. Back probe the Red/Grn wire in the MAP sensor connector.
Oh, thanks, so basically positive to that wire and then ground on the block?
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Old 10-04-2011, 11:53 AM
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Default Re: How can I test a MAP sensor?
Originally Posted by motegicivic
Oh, thanks, so basically positive to that wire and then ground on the block?
yep

Multimeter set to read DC volts in around the 20 V range.
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Old 10-04-2011, 11:56 AM
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Default Re: How can I test a MAP sensor?
Originally Posted by RonJ@HT
yep

Multimeter set to read DC volts in around the 20 V range.
Thanks
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Old 10-04-2011, 04:03 PM
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Default Re: How can I test a MAP sensor?
there would be a cel
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Old 10-04-2011, 04:08 PM
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Default Re: How can I test a MAP sensor?
Originally Posted by Hellahflush
there would be a cel
Not always
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Old 10-08-2011, 08:53 AM
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Default Re: How can I test a MAP sensor?
Is this the only way to test a map sensor?
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Old 10-08-2011, 11:51 AM
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Default Re: How can I test a MAP sensor?
Originally Posted by frankenghia
Is this the only way to test a map sensor?
I think so, sometimes with age the MAP will not read correctly, but will not throw a CEL until it is really out of spec.
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