B serious

iTrader: (1)

Does anyone have the specs on the MAP voltages? I searched, and I couldn't find anything helpful.

I know that the yel/red wire should have around 5V when compared to ground

The Green/white is ground

The 3rd wire (forgot the color) is a signal back to the ECU.

My question is: high Voltage at high vac. or high voltage at low vac.??

What are the voltage specs from the 5v reference to the ECU signal?

I'm guessing I'd have to measure the voltage difference between idle and WOT from the yel/red wire to the signal wire (the one who's color I forgot). Or do I measure from signal to ground?

Help me out, please. I dont have a Haynes manual.

The car is a 99 civic Si.


Modified by B serious at 6:36 PM 2/27/2008

B serious

iTrader: (1)

yo?

B serious

iTrader: (1)

Nevermind. I found the answer elsewhere.

Incase anyone else is searching for the same thing:

yellow/red - 5V
green/white - ground
red/green = signal

measurements are taken from +signal -ground.
high voltage = low pressure (atmosphere is just under 3V)

Thanks for all the help, jerks.

Sic_DA_Nine

how do you test a map sensor?

onsetofpurity

How do you milk a goat? With a Voltmeter

Luserkid

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by onsetofpurity &raquo;</TD></TR><TR><TD CLASS="quote">How do you milk a goat? With a Voltmeter</TD></TR></TABLE>

You can milk a goat with a voltmeter?

Sorry B serious would have helped you but didnt see this thread until now. I had alot of map sensor problems before.

DCSportEJ1Civic

good info, i could have used this a while ago. well not for an si but im sure its the same for my z6.