Question about 1997 Jeep Grand Cherokee

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On a 97 jeep grand cherokee, which wire coming

On a 97 jeep grand cherokee with a 4.0 6cyl, , which wire coming from the map sensor is the signal wire that goes to the ecu , there are three wires.

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  • Anonymous Jun 22, 2010

    Dear Thundergod, Thanks so much for your additional information on my problem, now i can eliminate my problem. Sure is nice to be able to ask an expert !

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DK/GR&RED. Center wire.Other wires are 5 volt ref and system ground.

Posted on Jun 22, 2010

Testimonial: "Thanks for your help, although on my 97 there are two whites and a red, but there are still only three so i'll try the center wire, nice to have a starting point !"

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  • Jeep Master
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Should be pin 27 in the black connector on computer.

Posted on Jun 22, 2010

Testimonial: "Thanks for your help, now i just have to find the computer and try to find pin # 27, nice to have a starting point !"

  • Richard Scordino Jun 22, 2010

    know what? I'm going to give you all of them.....a27 on pcm goes directly to map a17 goes to map (white/black wire) also goes to tps. Black/lt blue wire is shared with all sensors and cruise control

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1 Answer

2000 jeep grand cherokee limited 4.7 map sensor wiring diagram


You should be able to order a manual at an auto parts store or your local bookstore. It is worth checking the library to see if they have a copy.

Aug 09, 2016 | 2000 Jeep Grand Cherokee Limited

1 Answer

What does code PO108 mean on a 2001 Grand Cherokee


wow , you actually tried to look it up, a 1st time here.

the MAP is a baro sensor used to calculate fuel injection RATES.

if you have gross air leaks to the system the engine IDLE screams.

is it?

108 means the voltage is too high.

usually its unplugged, or bad sensor.

otential causes of a P0108 code: Bad MAP sensor Leak in vacuum supply line to MAP sensor Engine vacuum leak Short on signal wire to PCM Short on reference voltage wire from PCM Open in ground circuit to MAP Worn engine causing low vacuum



Bad MAP sensor Leak in vacuum supply line to MAP sensor Engine vacuum leak Short on signal wire to PCM Short on reference voltage wire from PCM Open in ground circuit to MAP Worn engine causing low vacuum



http://www.obd-codes.com/p0108



and last. but before ECU.

low engine compression, is 1 more, causes , many



what i do is reseat the MAP sensor

i then make sure he vacuum port is not clogged. (both sides)

i then measure the output , keyon, and idle and gunning throttle.

any Voltmeter works here,

key on is 5v or near.

idle 1.8v

gun engine as the RPMs fall like a rock the volts tries to hit 0.5vdc.



http://www.fixkick.com/look/odds-ends/jeep/MAP-sensor-output-real.jpg



very very easy to find with a voltmeter

if the meter agrees with vacuum gage, then the MAP is ok

and you have air leaks or low vacuum for (VAST reasons)

ask.

Aug 19, 2014 | 2001 Jeep Grand Cherokee

1 Answer

Fault code P0107 in 2001 grand cherokee


Code 107 means the MAP sensor signal is low. The problem could be the sensor, the wiring, or a major vac leak.

Aug 04, 2014 | 2001 Jeep Grand Cherokee

1 Answer

Multiple misfires


The computer could be sending the wrong signal.Try and have the computer tested by an auto electrician.

Jan 06, 2014 | 1997 Jeep Grand Cherokee

1 Answer

97 jeep grand cherokee loses power while driven


this can be due to transmission or MAP sensor or cranck position sensor. do you check engine light?

Nov 14, 2011 | 1997 Jeep Grand Cherokee

1 Answer

Where is the map sensor located? 1994 jeep grand cherokee


Go half way between the air cleaner box and the "carburetor". Up the 4" black air pipe, a wire harness plug plugs into the MAP sensor there. Also called MAS air flow sensor.

Oct 05, 2009 | 1994 Jeep Grand Cherokee

2 Answers

Coolant level sensor bad warning comes on console


Coolant sensor wiring would be the next place to look. Make sure connector is good, and look for broken wires.

May 31, 2009 | 1997 Jeep Grand Cherokee

2 Answers

Coolant level sensor bad warning comes on console


I have the same problem with my 97 Jeep. I found a fix on www.jeepforum.com posted by phild328, goodluck

Apr 04, 2009 | 1997 Jeep Grand Cherokee

1 Answer

Map Sensor Wires Question


Answer:

On a 3-wire MAP sensor connector when looking at the vehicle "wiring harness mating side of the connector" (and not the sensor connector) - with the snap detent pointing UP and looking LEFT to RIGHT the signals will read >

GROUND > MAP SIGNAL > POWER


Hopefully we are talking about a MAP sensor, and NOT a MAF sensor as the 2 are different as to the wiring signals.

Color of the wires doesn't matter, as you are just looking for backprobed voltage SIGNALS only using an adapter if you are doing in-circuit signal testing.

POWER I believe should be in the 5-volt range unless Jeep is using 3.3-volt.

Usually the MAP SIGNAL voltage range is quite a bit lower on the sense line, but with Jeep you never know? If using a good DVM measuring the MAP SIGNAL voltage you should see a smooth decrease in voltage as the vacuum is increased. If there is no voltage change or negative swing then the sensor may either be bad or else you have an OPEN or SHORTED wire between one of the 3 connector leads and the PCM computer, which would be rare.

I take you are troubleshooting a specific CHECK ENGINE CODE hopefully, as if not I would have the PCM read properly with a good CAN OBD II code reader to pinpoint the troublesome sensor.

I've always used an ACTRON CP9087 Sensor Tester, and a CEN-TECH 94169 CAN OBD II code reader which works great for me.

Make sure your MAP vacuum line is good and hooked up right as well.

Let me know what you find?

Thx,

Frank

Jul 10, 2008 | 2003 Jeep Grand Cherokee

2 Answers

Oxygen sensor wiring diagram


My 97 cherokee catalytic converter was stolen, oxygen sensor wires cut. the replacement is black, grey and white. the jeepicon1.png is different color. i need help knowing which wires get connected to which.

Jun 24, 2008 | 1997 Jeep Grand Cherokee

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