Map sensor wiring for Chevy s-10

Hi, The Map sensor on a Suburban is located.
Beside of the ignition coil. on the intake.
Is a litle sensor with a connector of 3 wires.

I hope this work for you. OK

check this wiring digram

http://www.bigcee.com/faq/KLR650-color-wiring-diagram.jpg


You can also buy a wiring diagram from the following site..

http://www.ahdol.com/ford_wiring_diagrams.html

Some of those models had a MAP Sensor and some didn't.The mazda and the Ford ranger are the exact same truck with the exception of the grill and tail lights. I am not sure if your saying that you have a map sensor and no wire or a wire and not map sensor.If there is no wire for a map sensor then you truck does not require one. If it has the wire then you will have to get a map sensor.The trucks that don't have a map sensor will have a Mass Air Flow Sensor, located at the top of the air filter box.
I hope this will help you.

You may need a wiring diagram to make sure, but I think the gray wire is reference voltage and it also powers the throttle position sensor. The sensors get power from the engine computer.

Hello! The problem is more than likely being caused by the Manifold Absolute Pressure (MAP) sensor...It is bolted to the side of the throttle body...Has wire colors Gray (+5volts)...Light Green (Signal out)...And Black (Return or Ground)...Using safety pins...Push the point into the rear of the in-place MAP connector...Clip the (+) meter probe, set to read +5volts, to the Light Green wire...The (-) probe to the Black...Start the engine...At idle reading is close to +5 volts...At 2500 rpm reading drops to 1.5-2.0 volts...If you have already replaced the MAP and do not get these results...Pull the MAP connector and read back into it using the same procedure...If, for instance, the Light Green signal lead remains on +5 volts it is probably shorted to the Gray in the harness...No voltage is present; The Gray wire is open...Or, No ground on the Black, the Black is open...Whatever you find wrong...Merely cut out the bad wire and re-connect on both ends..See diagram of MAP location below....Send a comment via e-mail....Guru...Saailer





I’m happy to help further over the phone at https://www.6ya.com/expert/david_6df67de3b14de867

P0108 - MAP Manifold Absolute Pressure/Barometric Pressure Circuit High Input

The MAP (Manifold Absolute Pressure) sensor measures engine manifold negative air pressure. It's usually a three wire sensor: a ground wire, a 5 volt reference wire from the PCM (Powertrain Control Module) to the MAP sensor, and a signal wire that informs the PCM of the MAP sensor voltage reading as it changes. The higher the engine vacuum, the lower the voltage reading. The voltage should range between about 1 volt (at idle) to about 5 volts (WOT wide open throttle).

If the PCM sees the voltage reading from the MAP sensor is greater than 5 Volts, or if the voltage reading is higher than what the PCM considers normal under certain circumstances, a P0108 DTC will set.


Symptoms of a P0108 DTC code may include:
* MIL (Malfunction Indicator Lamp) will likely be on
* Engine may run poorly
* Engine may not run at all
* Fuel mileage may decrease
* Presence of black smoke at exhaust


Causes: Potential 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


Possible Solutions
A good way to diagnose if the MAP sensor is to blame would be to compare the KOEO (key on engine off) MAP sensor reading on a scan tool with the Barometric pressure reading. They should be the same because they both measure atmospheric pressure.

If the MAP reading is greater than 0.5 volt off of the BARO reading, then replacing the MAP sensor would likely fix the problem. Otherwise, start the engine and observe the MAP reading at idle. It should normally be about 1.5 volts (varies according to altitude).

a. If it is, the problem is likely intermittent. Check all the vacuum hoses for damage and replace as necessary. You can also try wiggle testing the harness and connector to reproduce the problem.
b. If the scan tool MAP reading is more than 4.5 volts, check the actual engine vacuum reading with the engine running. If it is less than 15 or 16 in. Hg, then the PCM is probably not seeing enough vacuum (due to a worn engine, perhaps) for a given operating condition (which causes a higher than normal voltage signal to the PCM) and setting the code. Repair the engine vacuum problem and retest.
c. But, if the actual engine vacuum reading is 16 in. Hg or more, then unplug the MAP sensor. The scan tool MAP reading should indicate that there is no voltage present. Check that the ground from the PCM is intact and also that the MAP sensor connector and terminals are tight. If the connection is good, then replace the map sensor.
d. However if, with KOEO, & the MAP sensor unplugged, the scan tool shows a voltage reading, then there may be a short in the harness to the MAP sensor. Turn the ignition off. At the PCM unplug connector and remove the MAP signal wire from the connector. Re-attach the PCM connector and see if with KOEO, the scan tool MAP reading shows voltage. If it still does, replace the PCM. If not, check for voltage on the signal wire you just removed from the PCM. If there is voltage on the signal wire, find the short in the harness and repair.


Hope helps (remember to rate this answer).

Hello girlspy0: My name is Roger and I will help you. Code 34 is related to the MAP sensor. This is usually a repair that requires electronic knowledge. If you think the map sensor is the problem the part is pricey.I would not replace the part for sake of replacing it. Check connection to make sure no wires are broken or pushed out of the terminal socket.The problem could also lie in the ECM or PCM. Should You need further help please just ask. Please rate the answer you received. This way I know if it helped. Thank You for using Fix Ya. Roger

Hello l_anderson36: My name is Roger and I will help you. You should find the map sensor at the front of the engine. Located on the drivers side of the engine. The sensor will have a plug with three wires on it.
Should you need further help please just ask. Please rate the quality of this answer. This way we know your answer helped. Thank You for using Fix Ya.Roger

Run this diagnostic
Test Procedures 
1. Check if DTC P0110 is set in addition to DTC P0105 or P0106. If DTC P0110 is set, go to next 
step. If DTC P0110 is not set, go to step 3 . 
2. Turn ignition off. Disconnect MAP sensor 4-pin connector. Measure resistance between ground 
and MAP sensor connector terminal No. 4 (Green wire). If resistance is one ohm or less, replace 
MAP sensor. If resistance is more than one ohm, repair open in Green wire between MAP sensor 
and ECM connector terminal No. 48. After repairs, clear DTC and verify MAP sensor operation. 
3. Turn ignition off. Disconnect MAP sensor 4-pin connector. Measure resistance between MAP 
sensor connector terminals No. 1 and 4 (component side). Resistance should be about 30,000 
ohms. If resistance is as specified, go to next step. If resistance is not as specified, replace MAP 
sensor. After repairs, clear DTC and verify MAP sensor operation. 
4. Turn ignition on. Measure voltage between ground and MAP sensor connector terminal No. 2 
(Red wire). Voltage should be about 5 volts. If voltage is as specified, go to next step. If voltage is 
not as specified, repair open in Red wire between ECM connector terminal no. 44 and MAP 
sensor connector terminal No. 2. After repairs, clear DTC and verify MAP sensor operation. 
5. Turn ignition off. Disconnect ECM 63-pin connector. Check for continuity between ground and 
MAP sensor connector terminal No. 1 (Green wire). If continuity does not exist, go to next step. If 
continuity exists, repair short to ground in Green wire between MAP sensor and ECM. After 
repairs, clear DTC and verify MAP sensor operation. 
6. Reconnect MAP sensor connector and ECM connector. Turn ignition on. Backprobe MAP sensor 
connector and measure voltage between ground and MAP sensor connector terminal No. 1 (Green 
wire). Voltage should be 0.2-4.5 volts. If voltage is as specified, go to next step. If voltage is not 
as specified, replace MAP sensor. After repairs, clear DTC and verify MAP sensor operation. 
7. Check ECM connector for loose or damaged terminals. If problem exists, repair ECM connector. 
If problem does not exist, replace MAP. Clear DTC and verify system operation. If problem still 
exists, replace ECM. After repairs, clear DTC and verify system operation.

Good luck and hope this helps. If the car does not start diconnect the MAP sensor to get you to the parts store if you need it to get you there.

Hi, The Map sensor on a Suburban is located.
Beside of the ignition coil. on the intake.
Is a litle sensor with a connector of 3 wires.

I hope this work for you. OK