Question about 1995 Dodge Spirit

1 Answer

Code 12 1995 dodge spirit 2.5 battery and PCM NOT disconnected. where does the pin 3 on PCM gets its battery suppy voltage from

Car runs very rough. Not driveable code 12 shows. look it up. Battery and computer was NOT disconnected. code 12 says no battery voltage at pin 3 on PCM where does that wire to pin 3 connect to get battery voltage

Posted by on

  • 2 more comments 
  • George Hawkes Feb 24, 2012

    Jeremy W
    I'm new at this site and do not know how to contact you
    Per your questioin the battery is FULLY charge.
    George

  • Jeremy W.
    Jeremy W. Feb 24, 2012

    I get an email when you comment. I will get back to you as soon as I can.

    Ignore the code 12. Does not have anything to do with you problem.

    Concentrate on the items I described below. If there was no power to the PCM at any of the power supply pins (one constant and 2 ignition, from memory there may be one more) than the vehicle would not start at all.

  • George Hawkes Feb 24, 2012

    Jeremy W
    With all spark plugs removed the compression in each cyl is 140 to 150.
    I have change the spark plugs wires, dist cap, rotor sensor in dist.
    I also change the o2 sensor had 150000 miles on it and also the egr valve.
    once in a while the engine will start normal and run fine for a short time like a few minutes
    Then runs rough and little power.
    Can a bad fuel pump make it run normal for a few minutes then run poor again??
    Thanks for taking the time with my problem
    George

  • Jeremy W.
    Jeremy W. Feb 24, 2012

    Check spark on the coil wire with an adjustable spark tester. You should see at least a half inch of hot blue spark. If it is orange or not sparking than maybe you have a bad coil.

    Another thing you can do when it starts to run rough is unplug the coolant temp sensor located near the t-stat housing. If the idle drops and the engine smooths out than there may be an issue with the temp sensor giving the wrong signal.

    here's another thing you can try. When its running rough try adding a couple of shots of carb spray into the throttle body. If the idle smooths out than there is a fuel issue or you may have a vacuum leak.

    give those three a shot and let me know what you find and we'll go from there.

×

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Top Expert:

    An expert who has finished #1 on the weekly Top 10 Fixya Experts Leaderboard.

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

  • Dodge Master
  • 5,332 Answers

Has the battery been disconnected or been low on charge in the last 50 ignition cycles?

Code 12 means that battery power has been disconnected within the last 50 ignition cycles. it does not mean there is no battery power to the computer

Pin 3 should be a red/white wire that is the constat power supply to the PCM. It is protected by a fusible link located neer the drivers side strut tower. If that link was bad the car would not start or run as it also supplieds power to the asd relay, fuel pump relay, and the ssd relay.

I would put money on the the problem being igntion (plugs wires cap rotor), compression (low cylinder compression usually cylinders 2 and 3), lack of fuel delivery (low fuel pressure, a weak or dirty injector), timin (timing belt jumped, worn distributor, look exciter ring), or possibly a plugged catalytic converter.

I would check compression first especially cylinders 2 and 3. It was pretty common for the head gasket to fail in between these two cylinders.

Posted on Feb 24, 2012

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

GM Code PO785 I have Replaced the Wiring and all the solenoids and I am still getting PO785 Code 3-2 Down shift Solenoid ??


What model and year vehicle ? Computer problem maybe . Do you know how to test a PCM driver (transistor) Need a wiring diagram ,pin out of PCM connectors . , need a test light to check an see if the PCM is able to suppy a ground for that shift solenoid to turn on an off .

Sep 02, 2017 | Cars & Trucks

2 Answers

06 Dodge Charger v8 2305 changed all could and all plugs new pcm. Still running rough still has code 2305. #2 ignition coil gets hot. The first time I got the code it melted the #2 ignition coil help!


if I am not mistaken, the coil has a little plastic clip where it plugins, inspect the clip for a tight fit, if there is any damage replacing clip should solve the problem. I would also check the ground on pcm at the number 3 pin

Oct 17, 2015 | Dodge Cars & Trucks

1 Answer

Code p0203


P0203 - Cylinder 3 Injector Circuit Malfunction

P0203
means that the PCM detected a fault in the injector or the wiring to the injector. It monitors the injector and when the injector is activated, the PCM expects to see the voltage pulled "low" or close to zero. When the injector is switched off, the PCM expects to see a voltage that is close to battery voltage or "high". If it doesn't see the expected voltage the PCM will set this code. The PCM also monitors resitance in the circuit. If the resistance is excessively low or high it will set this code.

The symptoms for this code will likely be a misfire and a rough running engine. Poor acceleration. The MIL will also be illuminated.

The causes of a P0203 engine light code could be any of the following:
Bad injector. This is usually the cause of this code but doesn't rule out the possibility of one of the other causes
Open in the wiring to the injector
Short in the wiring to the injector
Bad PCM

Hope this helps and just keep in mind that your feedback is important and I'll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa.
Jose.

Oct 23, 2011 | 2001 Dodge Ram 2500 Truck

1 Answer

I HAVE A 1995 DODGE NEON THAT GIVES ME A CODE 12 LOST VOLTAGE SUPPLY TO PCM. I ALSO GET A CODE FOR 54 THAT INDICATES A BAD SIGNAL FORM CAM OR CRANK SHAFT I HAVE REPLACED BOTH OF THESE BUT THE PROBLEM...


try checking your connectors again .sounds like a bad pin at he ecm when the problem comes back test the voltage going from crank sensor to ecm . an old pinched wire will do the same off n on also

Nov 04, 2017 | 1995 Dodge Neon

1 Answer

In my 2002 dodge durango myh check engine light is on and I took it to auto zone to have them check the engine codes. Upon the completion of the test I got 4 engine codes P300 P301 P302 and P0442. The...


Do you know how to test electrical circuits ? Is the PCM - engine computer controlling the coils ? Test with a test light ! One side has B+ voltage the dark green with orange stripe wire ,the other goes to the PCM , which will suppy a ground when triggered . You can test this with a test light . or you can buy a noid light at the parts store . If you replaced the coil an spark plug an that code comes back ,could have a burnt driver inside the computer , test it first !
How to test computer transistor driver without scan tool

Jun 21, 2017 | 2002 Dodge Durango

1 Answer

Code 1 2 2 1 2 1


CODE 12 Problem with battery connection. Direct battery input to pcm disconnected within the last 50 ignition key-on cycles.

CODE 21** Problem with oxygen sensor signal circuit. Sensor voltage to computer not fluctuating.

The 12 is not problem, just advise that your battery has recently disconnected; the repeat 21, maybe can be for two O2 sensor, review it.

Hope helped (remember rated this help) Good lick.

Nov 05, 2009 | 1995 Dodge Neon

2 Answers

P0351 ingnition coil ciruit problem intermentent problem


1. Disconnect the voltage regulator connection at the alternator assembly and start the engine to see if it runs better or not and to see if the same coil-on-plug (COP) unit codes reset.

2. If the engine operation is good unless the voltage regulator connection is plugged in, it suggests a diode failure of the alternator assembly creating electrical noise.

3. If the engine operation is not any different with the voltage regulator connection unplugged, check the COP unit circuits at the PCM for battery voltage with the ignition switch in the run position and the COP's connected. Perform a wiggle test of the circuits and harness to verify that battery voltage to the PCM cannot be interrupted indicating a PCM failure.
COP 1 is controlled by a Light Green/White (LG/WH) wire at pin 1 of the C175e connector.
COP 2 is controlled by a Pink/White (PK/WH) wire at pin 12 of the C175e connector.
COP 3 is controlled by a White/Pink (WH/PK) wire at pin 24 of the C175e connector.
COP 4 is controlled by a Dark Green/Violet (DG/VT) wire at pin 35 of the C175e connector.
COP 5 is controlled by a Light Green/Yellow (LG/YE) wire at pin 36 of the C175e connector.
COP 6 is controlled by a Orange/Yellow (OG/YE) wire at pin 22 of the C175e connector. 1. There have been a lot of problems with the coil circuit wires breaking inside their insulation near the Powertrain Control Module (PCM) connector, usually within 2" of the PCM. Wiggle test the wiring harness, starting from the PCM and working toward the coil. 1. Verify battery power is present and consistent on the Red (RD) wire of multiple Coil-On-Plug (COP) unit connections.

2. If the battery power supply to the COPs is good, disconnect and inspect the C133 engine harness connector at the top of the engine for a possible connection issue. This connector is a grey 16-terminal connector. It may be behind the rear side of the intake plenum. Service the connection as necessary.

3. Disconnect the PCM connection and inspect the COP unit primary circuits and terminals at the C175E connection. Service the connection as necessary.

4. If the circuits and connections all appear to be in good condition, replace the PCM. Replacement of the PCM will require a programming function to be performed using the Ford scan tool for Passive Anti-theft System (PATS) functions and the PCM is an 8 year/80,000 mile (7/70 for CA state emissions) warranty item.

Oct 13, 2009 | 2005 Ford Escape

1 Answer

2002 dodge intrepid P0352 error code.


Look for an erroneous connection or a damaged terminal at the #2 ignition coil. To locate the #2 ignition coil look at diagram below.

1 - 3 - 5
< - - - Front of vehicle
2 - 4 - 6

If connection is good next you need to check for a short in the wires between the ignition coil and the PCM.

If there is no short next you need to turn the ignition switch to LOCK.
Disconnect the PCM.
Check the ignition control circuit for a short to ground
-and-
Inspect the ignition control circuit for a short to battery voltage

See whether there is any open in the ignition control.

If everything is good next step would be to replace the PCM.

Apr 16, 2009 | 2002 Dodge Intrepid

1 Answer

"No Connectin" at OBD II plug


Will it give you codes on the dash if you turn the key on and off 3 times.

Mar 24, 2009 | 1996 Dodge Grand Caravan

2 Answers

Diagnostic codes


Please rate me solved...thanks!
DTC P1259: VTEC SYSTEM MALFUNCTION
1. Perform PCM reset procedure. See SELF-DIAGNOSTICS - INTRODUCTION article. Start engine
and run at 3000 RPM with no loads and transmission in Park or Neutral until radiator fan comes on. Road
test vehicle. Accelerate in 1st gear to an engine speed over 4000 RPM and hold that engine speed for at
least 2 seconds. If DTC P1259 is not indicated during first road test, repeat road test 2 more times. If DTC
P1259 is indicated, go to next step. If DTC P1259 is not indicated, problem is intermittent. System is
okay at this time. Check for poor connections or loose wires at VTEC solenoid valve connector and PCM.
See ENGINE PERFORMANCE WIRING DIAGRAMS article. Repair as necessary.
2. Turn ignition off. Disconnect VTEC pressure switch 2-pin connector. Check for continuity between
VTEC pressure switch terminals. If continuity exists, go to next step. If continuity does not exist, replace
VTEC pressure switch.
3. Turn ignition on. Measure voltage between ground and VTEC pressure switch harness connector terminal
No. 2 (Blue/Black wire). If about 12 volts exist, go to next step. If about 12 volts do not exist, check for
an open or short in Blue/Black wire between VTEC pressure switch and PCM 31-pin connector "C"
terminal No. 10. Repair as necessary. If wire is okay, substitute a known-good PCM and recheck. See
SUBSTITUTING PCM in SELF-DIAGNOSTICS - INTRODUCTION article. If symptom or problem
goes away, replace original PCM.
4. Measure voltage between VTEC pressure switch harness connector terminals. If battery voltage exists, go
to next step. If battery voltage does not exist, repair open in Brown/Black wire between VTEC pressure
switch and ground connector located on left side of engine, under throttle plate, between end of radiator
hose and cooling fan switch. See ENGINE PERFORMANCE WIRING DIAGRAMS article. If wire is
okay , substitute a known-good PCM and recheck. See SUBSTITUTING PCM in SELFDIAGNOSTICS
- INTRODUCTION article. If symptom or problem goes away, replace original PCM.
5. Turn ignition off. Disconnect VTEC solenoid valve connector. Measure resistance between ground and
VTEC solenoid valve connector. See ENGINE PERFORMANCE WIRING DIAGRAMS article. If
resistance is 14-30 ohms, go to next step. If resistance is not 14-30 ohms, replace VTEC solenoid valve.
6. Remove VTEC pressure switch and install Pressure Gauge Adaptor (07NAJ-P07010A) and A/T Low
Pressure Gauge (07406-0070300). Reinstall VTEC pressure switch into adaptor. Connect tachometer.
Start engine and with no loads and transmission in Park or Neutral until radiator fan comes on. Because
engine is running with no load, oil pressure must be checked within one minute. Check oil pressure at
engine speeds of 1000, 2000 and 3000 RPM. If oil pressure is less than 7 psi (48 kPa), go to next step. If
oil pressure is 7 psi (48 kPa) or more, check VTEC solenoid valve. See SYSTEM & COMPONENT
TESTING article.
7. Turn ignition off. Disconnect VTEC solenoid valve connector. Connect a fused jumper wire between
battery voltage and VTEC solenoid valve connector. Start engine and check oil pressure at 3000 RPM. If
oil pressure is more than 57 psi (393 kPa), go to next step. If oil pressure is 57 psi (393 kPa) or less,
check VTEC solenoid valve. See SYSTEM & COMPONENT TESTING article.
8. Ensure jumper wire is still connected to VTEC solenoid valve connector. Start engine and allow it to idle.
Set engine speed to more than 4000 RPM and measure voltage between ground and PCM 31-pin
connector "C" terminal No. 10 (Blue/Black wire). See ENGINE PERFORMANCE WIRING
DIAGRAMS article. If battery voltage exists, go to next step. If battery voltage does not exist, replace
VTEC pressure switch.
9. Turn ignition off and disconnect jumper wire. Check for continuity between VTEC solenoid valve
harness connector and PCM 25-pin connector "B" terminal No. 12 (Green/Yellow wire). See Fig. 2 . See
ENGINE PERFORMANCE WIRING DIAGRAMS article. If continuity exists, go to next step. If
continuity does not exist, repair open in Green/Yellow wire between VTEC solenoid valve connector and
PCM 25-pin connector "B" terminal No. 12.
10. Check for continuity between ground and VTEC solenoid valve connector. See ENGINE
PERFORMANCE WIRING DIAGRAMS article. If continuity exists, repair short in Green/Yellow
wire between VTEC solenoid valve connector and PCM 25-pin connector "B" terminal No. 12. If
continuity does not exist, substitute a known-good PCM and recheck. See SUBSTITUTING PCM in
SELF-DIAGNOSTICS - INTRODUCTION article. If symptom or problem goes away, replace original
PCM

Jun 21, 2008 | 1999 Honda Accord

Not finding what you are looking for?
1995 Dodge Spirit Logo

300 people viewed this question

Ask a Question

Usually answered in minutes!

Top Dodge Experts

yadayada
yadayada

Level 3 Expert

79123 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22326 Answers

Ronny Bennett Sr.
Ronny Bennett Sr.

Level 3 Expert

6927 Answers

Are you a Dodge Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...