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Pcm wiring diagram

Auto shut down circuit 2005 sx2.0

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. Solving a P0449 Engine Code 2005 Chevy Monty Carlo


DTC P0449 Evaporative Emission (EVAP) Vent Solenoid Control Circuit.
Circuit Description
An ignition voltage is supplied to the evaporative emission (EVAP) canister vent solenoid valve. The control module grounds the EVAP canister vent solenoid valve control circuit to close the valve by means of an internal switch called a driver. The scan tool displays the commanded state of the EVAP canister vent solenoid valve as ON or OFF. The control module monitors the status of the driver. If the control module detects an incorrect voltage for the commanded state of the driver, this DTC sets.

Do you know how to test automotive electrical circuits using a volt meter ? How to test a transistor (driver) inside the PCM . Videos on youtube. Do you know what a wiring diagram is ?
Also search P0449 on youtube . Free wiring diagrams here http://www.bbbind.com/free_tsb.html Enter vehicle info. year , make , model and engine size . Under system click engine ,then under subsystem click fuel controls . Click search the blue link. Scroll down to #9 diagram . Circuit for vent solenoid . This video is a chevy truck ,doesn't matter .
GMC Chevy Truck DTC P0449 EVAP Vent Solenoid Control Circuit

Sep 26, 2017 | Cars & Trucks

2 Answers

2005 odyssey wiring diagram. Need to discover what 40A fuse BackUp Circuits is


I show a 40A fuse 20 in the underhood fuse relay box that connects to 15A fuse 12 in the driver's underdash fuse/relay box (perhaps as a backup?)

Oct 09, 2016 | 2005 Honda Odyssey

2 Answers

Tbi fuel shuts off when the light are turned on?


Sounds like a ground or high resistance problem . You have to look at a wiring an check to see if the headlamps an the PCM/ECM share a common ground circuit .Go to http://www.bbbind.com/free_tsb.html free wiring diagrams ! Then go on youtube an watch videos on voltage drop testing , basic automotive electrical trouble shooting , how to read a wiring diagram . The get yourself a DVOM - digital volt ohm meter an then test the circuits involved . The PCM/ECM control the TBI injector . Also check the battery an cable connections .

Apr 08, 2016 | Cars & Trucks

1 Answer

My 2013 dodge avenger wont start. Im getting a p0688 ECM/PCM code. What should I do


P0688 (generic) = ECM/PCM Power Relay Sense Circuit /Open
P0688 DODGE - Auto Shutdown Relay Control Circuit Low

Check all the ECM fuses, if the fuses are OK try replacing the ASD (Auto Shut Down) relay.

Read more: http://www.autocodes.com/p0688_dodge.html#ixzz405J7vpq8

Possible causes:

- Weak battery - Low voltage while cranking
- Faulty Engine Control Module (ECM) relay
- Blown ECM fuse
- Faulty ECM
- ECM harness is open or shorted
- ECM circuit poor electrical connection

Feb 13, 2016 | Dodge Cars & Trucks

1 Answer

What is PCM and ASD? It started when the battery light came on we replaced the battery and it shut off but a week later the battery light is back on,we then replaced the alternator and the light is still...


The PCM is the engine computer , ASD - is auto shut down relay . The charging system is controlled by the PCM .If fuse blows there is a dead short to ground in that circuit . Do you know anything about automotive electrical trouble shooting ? If not ,your best bet mite be to take it to a qualified repair shop. It takes special tools and knowledge to fix these problems .
Finding The Source Of Electrical Shorts In Your Car
Basic Electricity for Service Techs Ohm law Current Flow Opens Shorts
Do you know what a wiring diagram is an what it's used for ?
http://www.bbbind.com/free_tsb.html

The Trainer 29 Understanding How Electrical CIrcuits Work and How to Test...


Jul 24, 2017 | 2000 Chrysler Cirrus

2 Answers

I have chevy silverado 2003. When my fuel tank is low and the low level fuel light comes on, my pcm fuse blows and truck shuts off going down the freeway. I cant even turn the ignition over unit i...


yes i would say most likely it the fuel pump. it work harder wen u out of gas and may draw too much current blowin the fuse. i looked at wiring diagram and pcm fuse does feed the pump so my educated guess would be replace the fuel pump

Feb 23, 2011 | 2003 Chevrolet Silverado 2500HD

1 Answer

Diagnostic Trouble Code 332 JEEP LIBERTY ? WHAT IS THIS ?


2005 Jeep will be OBD II compliant and the trouble code(s) will be 4 digits after a P,B or U. Are you sure you wrote it down right?
For example P0332 for your car is Knock Sensor 2 Circuit Low Input (Bank 2)

Potential causes for a P0332 DTC include (but are not limited to):

  • The knock sensor is faulty and needs to be replaced
  • There is a wiring open/short/fault in the knock sensor circuit
  • The PCM/ECM has failed
Possible Solutions
  • Verify the resistance of the knock sensor (compare it to factory specs)
  • Inspect for broken/frayed wires leading to the sensor
  • Check the wiring and connections leading to/from the knock sensor and PCM/ECM
  • Verify proper voltage is reaching the knock sensor (e.g. 5 volts)
  • Verify proper grounding of sensor and circuit
  • Replace the knock sensor
  • Replace the PCM/ECM

Jan 25, 2011 | 2005 Jeep Liberty

2 Answers

1999 chrysler 300m shaft cam sensor is bad.


did you check the ASD relay,located under the hood in the fuse and relay box. hope this can help.

May 14, 2010 | 1999 Chrysler 300M

1 Answer

Could anyone help me find some quick on line resources for 1992 Ford Taurus Wagon 3.8 L Engine Diagrams/ Wireing Schematics etc.


GO TO AUTO ZONE - ADVANCE AUTO - OREILLYS. BUY A HAYNES REPAIR MANUAL.IT HAS WIRING DIAGRAM FOR EACH CIRCUIT.LIKE HEATING + AC CIRCUITS INTERIOR LIGHTS EXTERIOR LIGHTS STARTING + CHARGING SYSTEM WARNING DASH SYSTEM POWER DOORS + POWER WINDOWS + RADIO SYSTEM + CRUISE CONTROL + WINDSHIELD WIPER SYSTEM.ALSO HAS WIRING DIAGRAM FOR ALL THE PCM SENSORS.AND THE PCM ALSO.

Nov 04, 2009 | Ford Taurus Cars & Trucks

1 Answer

Ignition coil keeps busting open


YOU EITHER HAVE A COIL DRIVER CIRCUIT WIRE SHORTED OR FAULTY ENGINE CONTROLLER(PCM)..CHECK NEAR TRANS DIPSTICK FOR ANY DAMAGED/MISROUTED WIRING..HAVE SEEN IGNITION COIL DRIVER CIRCUIT PROBLEMS WITH PCM'S IN THESE VEHICLES ALSO

Jul 04, 2009 | 1998 Chrysler Town & Country

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