Question about 2000 Chrysler Cirrus

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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 on and now it keeps burning out this pcm/asd fuse. At first the car would not start and when we gave it a charge it would start with the wires still connected but once removed the car shuts off.Any suggestions?

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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 ?

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

Posted on Jul 24, 2017


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Posted on Jan 02, 2017

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SOURCE: No Start. OBDii Code P2305.

i have the same problem could someone please help ? its getting cold outside and i live 30 miles from my job.

Posted on Oct 27, 2008

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SOURCE: why does my 2004 pacifica keep burning up pcm

check the thermostat

Posted on May 22, 2009

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SOURCE: 2004 Pacifica keeps burning up pcm

sounds like electrial problem

Posted on May 22, 2009

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SOURCE: Battery discharges over night. I have checked all

first check if battery is good and if your not leaving any thing on and check your battery terminals to be clean and tightly screwed to the battery. then turn on your vehicle and dissconect the possitive cable on ur battery. if the car turns off, youll need to replace your alternator

Posted on Oct 15, 2009

  • 1033 Answers

SOURCE: my pt cruiser will not charge the battery it has

The alternator will have power still coming through but it's the voltage regulator inside the alternator that could be bad. This is pretty much what charges and keeps the battery at charge.

Posted on Jun 05, 2010

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2001 dodge neon 2.0 se what should the ohm reading be between asd relay ground to the computer ground wires?

You don't do an ohm check . Hook a test light to battery positive an have someone crank the engine over an touch the point part of test light to the PCM circuit at the relay socket . If the test light light's the PCM is grounding the circuit . Watch this video ! Fuel Pump Electrical Circuits Description and Operation ASD relay chrysler

Oct 28, 2016 | 2001 Dodge Neon

1 Answer

The red immobilizer light is staying on,the engine cranks but wont start..

You then have a ant-theft system problem an need to have the vehicle checked for DTC'S - diagnostic trouble codes . The ASD - relay supplies power to the ignition coils an too the fuel injectors .The ASD- auto shut down relay is energized by the engine computer - PCM . With the red anti-theft light on the PCM will not turn on the ASD relay cause a no start condition . You can check fuse an relays all you want ,not going to do any good . You need to see what the ant-theft systems problem is .

Feb 29, 2016 | 2003 Chrysler PT Cruiser

1 Answer

Pin 51 (pink wire) coming out of the pcm has 12 volts with ignition in the run position

Well ,then the PCM is not fine , send it back . Go to a salvage yard an get a used one . I had problems with PCM/ECM'S from them ! I have had better luck with used one's from salvage yard .

Oct 27, 2015 | 1994 Jeep Grand Cherokee

1 Answer

I have a p2323 code and replaced the spark plugs. I pulled the battery cable and after a week the code came back. What could be causing this.

P2323 Dodge - Ignition Coil Secondary Number 8 Circuit Condition - Faulty spark plug or coil boot
- Faulty Ignition Coil 8
- Ignition Coil 8 harness is open or shorted
- Ignition Coil 8 circuit poor electrical connection
Possible symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Engine may be running rough

P2323 Dodge Description
The ignition system is controlled by the Powertrain Control Module (PCM) on all engines. Each cylinder is equipped with 1 dual-output coil. Meaning one coil mounts directly over one of the dual spark plugs for 1 high-voltage output.
Battery voltage is supplied to all of the ignition coils positive terminals from the ASD relay. If the PCM does not see a signal from the crankshaft and camshaft sensors (indicating the ignition key is ON but the engine is not running), it will shut down the ASD circuit.
Base ignition timing is not adjustable. By controlling the coil ground circuits, the PCM is able to set the base timing and adjust the ignition timing advance. This is done to meet changing engine operating conditions.
The PCM adjusts ignition timing based on inputs it receives from:
- The engine coolant temperature sensor
- The crankshaft position sensor (engine speed)
- The camshaft position sensor (crankshaft position)
- The manifold absolute pressure (MAP) sensor
- The throttle position sensor
- Transmission gear selection
Read more:

I hope this helps!


Mar 17, 2015 | 2011 Dodge Ram Pickup 1500

1 Answer

1997 jeep Grand Cherokee Laredo 4.0 4wd. All the gauges dropped and now won't start. I've replaced the computer but still nothing

wont crank or cranks fast but will not start,????????
wow first thing replaced the most expensive part on car.? why ?
replace PCM. ! wow ! what if used PCM (is it used) is bad,?
if so now 2 problems, Compounding every thing,.....$$$$$$$$

last time it ran was 1 week ago , 1 year, what? miles on it?
bad fuel in tank , old?
why not elaborate that key symptom first.?
there is a cluster there.
gauges, warning lights. many, all must glow.
lets do this dance, posted 100 times;. now.
  1. head lights work not dim? key in pocket.
  2. key on, not cranked ! (covered in missing oper. guide)
  3. all warning lights glow, if not battery is weak or fuses blown.
  4. and the CEL lamp there, it must glow or the PCM has no power ,that too, is a blown PCM fuse. fact. (or lamp dead)
  5. lets say the lamp was dead,CEL the scan tools hows status of the lamp and all else, so use a $10 scan too now. does it communicate with the PCM and show all sensors and not DTC errors? scan it now, cant fix cars now , with no scan tool , buy one, and win on old cars. big time with pay back !!! heck all cars. 96+
  6. so the CEL glows now, good, now you crank, now, does the crank shaft turn fast cranking, yes/no. yes !
  7. then check for spark , got spark x 6?
  8. got spark well test fuel works now , even with dry gas tank.
  9. is the ASD relay closing and then dropping,? ( yes, and yes)
  10. then that means the PCM cut fuel , on purpose !!!!
  11. the scan tool tells you why. it did drop for sure. scan it.

1993 to now , MR. ASD 101

PCM is the engine EFI brain, it runs all spark and all fuel all the time. it also dumps the ASD to stop engine fires, by law.
confuses many, and all cars have this, one way or the other,
all EFI cars.

Feb 25, 2015 | 1997 Jeep Grand Cherokee

1 Answer

I have no spark to or from coil

Hi Rick, I'm glad to help! Rick, the PCM which is the Engine Controller must see a signal from the crankshaft position sensor and the camshaft position sensor before it will energize the ASD which is the Auto-Shut-Down-Relay. Which when energized then activates the spark to the coil pack. NOTE: Let's say the PCM is seeing the signal and is energizing the ASD but nothing is happening. If thats the case? FIRST: Try switching the ASD relay with another one just like it and see if it starts. If it doesn't, check every fuse under the hood and inside the vehicle. If they are all good. Then make sure there is power coming from the ignition switch to the ASD relay. Turn the key to the start position and see if the test light lights up. If it does then Replace the "Crank Sensor" first and see if it starts. If it still doesn't start then Replace the "Cam Sensor" If it still doesn't start. Then your into either a wiring problem somewhere or the PCM is bad. CAUTION: You must check every other possibility before replacing the PCM, because its very expensive. Hope this helps and have an awesome day Rick.

Apr 07, 2014 | 2005 Dodge Neon

2 Answers

2000 vw jetta alternator won't charge

the alternator gets power on big wire battery voltage the wire runs to starter, fuse box .alternator fuse goes to automatic shut down relay to relay control in ecm/pcm the field wire comes from ecm /pcm to alt.other field goes back to automatic shut down relay back to charge battery . if not charging at alt. try new alt. and retest.

Aug 05, 2012 | Cars & Trucks

2 Answers

My ASD fuse is making a clicking noise and vibrating. What is the function of this fuse?

ASD fuse is called an AUTOMATIC SHUT DOWN FUSE. The ASD sense circuit informs the PCM when the ASD relay energizes. A 12 volt signal at this input indicated to the PCM that the ASD has been activated. This input is used only to sense that the ASD relay is energized.
When energized, the ASD relay supplies battery voltage to the fuel injectors, ignition coils, and the heating element in each oxygen sensor. If the PCM does not receive 12 volts from this input after grounding the ASD reley, it sets a Diagnostic Trouble Code (DTC).

May 18, 2011 | Jeep Cherokee Cars & Trucks

1 Answer

What is the fault codes 1388 and 1389 for a 2002 Dodge Grand caravan? My engine stops while driving and won't start. It will usually start later but seems to be starved for fuel.

No voltage sensed at the PCM (powertrain control module) when the ASD (auto shut down) relay is energized. It could be the ASD relay, the PCM, possibly their relays.
If you are interested in further diagnosing the problem, I will be happy to assist you.

Mar 28, 2011 | 2002 Dodge Grand Caravan

1 Answer

No reverse only drives for 30 seconds limp mode???? please help!

P1388 = Auto Shutdown (ASD) relay control circuit open or shorted.
The ASD relay routes battery power to the ignition coils, and is energized by the PCM as long as it receives signals from both the crankshaft and camshaft position sensors. If the engine stops turning (stalls), the PCM deengerizes the ASD relay and shuts down the ignition system. The ASD relay also supplies battery voltage to the fuel injectors, so when it shuts down it cuts off both ignition and fuel. At the same time, the PCM also deenergizes the fuel pump relay to turn off the fuel pump. For "limp in" capability, the Chrysler system can run with input from the crankshaft position sensor only. The ASD and fuel pump relays are both located in the Power Distribution Center.

May 10, 2009 | Chrysler Voyager Cars & Trucks

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