Question about 1995 Dodge Stratus

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1995 dodge stratus has no power to coil or fuel pump. auto shut off relay has power and works. is the pcm bad?

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1 Answer

No one can guess at your issues

You need a dealer or repair shop

PCM don't fail often, and like any
part,nothing ever gets replaced without testing

Testing -- is professional grade scan tools,
oscilloscopes, etc, by people who understand
the systems they work on

Posted on Mar 17, 2011

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1997 dodge stratus wont start has no spark and no trouble codes.


The automatic shutdown (ASD) relay will turn off power to the coil(s) and fuel injectors if the PCM is not receiving a signal from the crankshaft position sensor. You can check the ASD relay, but the problem is almost always a crankshaft position sensor or the wiring/connectors between the PCM and that sensor.

Mar 29, 2017 | 1997 Dodge Stratus

1 Answer

Auto shut down fuse blows when I start the truck?


This information is straight out of the 1997 Breeze/Stratus/Cirrus Factory Service Manual (Yes I paid the $90 for it years ago)

__________________________________________________ _______________

Automatic Shutdown (ASD) sense - PCM Input

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).

Automatic Shutdown Relay - PCM Output

The PCM operates the Automatic Shutdown (ASD) relay and fuel pump relay through one ground path. The PCM operates them by switching the ground path for the solenoid side of the realys on and off. Both realys turn on and off at the same time.
The ASD relay connects battery voltage to the fuel injectors and ignition coil. The fuel pump relay connects battery voltage to the fuel pump.
A buss bar in the power distribution center (PDC) supplies voltage to the solenoid side and contact side of the relay. The ASD relay power circuit contains a 20 amp fuse between the buss bar in the PDC and teh relay. The fuse also protects the power circuit for the fuel pump relay and pump. The fuse is located in teh PDC.
The PCM controls the relay by switching the ground path for the solenoid side of the relay on and off. The PCM turns the ground path off when the ignition switch is in the Off position. When the ignition switch is in the On or Crank position, the PCM monitors the crankshaft position sensor and the camshaft position sensor signals to determine engine speed and ignition timing (coil dwell). If the PCM does not receive the crankshaft position sensor and camshaft position when the ignition switch is in teh Run position, it will de-energize teh ASD relay.
The ASD relay and fuel pump relay are located in the PDC near the battery. The inside top of the PCD cover has a label showing relay and fuse location.

ASD and Fuel Pump Relays

The following description of operation and tests apply only to the Automatic Shutdown (ASD) and fuel pump relays. The terminals on the bottom of each relay are numbered.

'------------------'
' __85 ___________'
' __87A '87 '30 ___' Sorry for the crudeness of this. This is supposed to
' __86 ___________' be the relay terminals!
'------------------'

OPERATION
- Terminal number 30 is connected to battery voltage. For both the ASD and fuel pump relays, terminal 30 is connected to battery voltage at all times.
- The PCM grounds the coil side of the relay through terminal number 85.
- Terminal number 86 supplies voltage to the coil side of the relay.
- When the PCM de-energizes the ASD and fuel pump relays, terminal number 87A connects to terminal 30. This is the Off position. In the off position, voltage is not supplied to the rest of the circuit. Terminal 87A is the center terminal on the relay.
- When the PCM energizes the ASD and fuel pump relays, terminal 87 connects to terminal 30. This is the On position. Terminal 87 supplies voltage to the rest of the curcuit.

TESTING
The following procedure applies to the ASD and fuel pump relays.
(1) Remove relay from connector before testing.
(2) With the relay removed from the vehicle, use an ohmmeter to check the resistance between terminals 85 and 86. The resistance shoud be 75±5 ohms.
(3) Connect the ohmmeter between terminals 30 and 87A. The ohmmeter should show continuity between terminals 30 and 87A.
(4) Connect the ohmmeter between between terminals 87 and 30. The ohmmeter should not show continuity at this time.
(5) Connect one end of a jumper wire (16 guage or smaller) to relay terminal 85. Connect the other end of the jumper wire to the ground side of a 12 volt power source.
(6) Connect on end of another jumper wire (16 guage or smaller) to the power side of the 12 volt power source. Do not attach the other end of the jumper wire to the relay at this time.

WARNING: DO NOT ALLOW OHMMETER TO CONTACT TERMINALS 85 OR 86 DURING THIS TEST.

(7) Attach the other end of the jumper wire to relay terminal 86. This activates the relay. The ohmmeter should now show continuity between relay terminals 87 and 30. The ohmmeter should not show continuity between relay terminals 87A and 30.
(8) Disconnect jumper wires.
(9) Replace the relay if it did not pass the continuity and resistance tests. If the relay passed the tests, is operates properly. Check the remainder of the ASD and fuel pump curcuits.

__________________________________________________ _______________

I know you said you replaced the relay, and this is a test procedure for the relay, but I have bought bad parts in the past. The description before the test procedure at least gives you an idea of what components are wired through and controlled by the relay. One of those may be faulty. Email me if you want or need wiring diagrams and I should be able to scan them and email them to you.

Jul 15, 2015 | 1992 Dodge Dakota

1 Answer

What is pcm asd circuit


PCM is powertrain control module. ASD is automatic shutdown. The PCM operates the Automatic Shutdown relay and fuel pump relay. The ASD relay supplies power to the fuel injectors and ignition coil. The fuel pump relay connects power to the fuel pump.

Oct 07, 2012 | 2004 Dodge Stratus

1 Answer

My 1999 dodge ram will start and idel until i hit the gas and let off then it dies. it gives me a p1389 code


I would start with the auto shutdown (asd) relay it is located in the power distribution box it may have corrosion or pcm could be bad it needs to be tested it connects the fuel injectors, o2 sensor and ignition coil if the pcm dont detect a 12 volt from the asd relay it will shut off.

Feb 04, 2011 | 1999 Dodge Ram

1 Answer

My 2005 Dodge stratus will not crank. It was sputtering this morning when cranked, and the engine liht was on. I took to advance auto to put on tester. They told me the heating coil or the plugs. I buy...


Well, let see, see if you hear fuel pump hissing or a click once you turn your key to the "on" postion. If so, then fuel pump is building pressure and is working, if not then fuel pump is the promblem and please check your fuel pump relay before actually considering fuel pump failure, secondly could be your ignition coil that's gone bad, I don't really know how to test this, but heard you can pull the spark plug out while still instact with the spark plug wire, position it about 1" away from a ground unit, such as your engine valve cover which is the metal part, or ground to see if there is a spark.... this is only on older model when the ignition coil is relayed within the distruburator. However seems by what advance auto diagnostic, seems like it the ignition coil that gone bad and needs to be replaces.

Jan 22, 2011 | 2005 Dodge Stratus

1 Answer

DODGE DURANGO TROUBLE SHOOTING


The power to the ignition coil comes from the Auto shut down relay. It also runs the fuel pump relay. When you turn the key on it will read 12 volts, but only for about 5 seconds. The auto shut down relay is controlled by the ecm. Check the power on the coil while cranking the engine. When cranking the ecm will lock on the ASD relay.

Apr 09, 2010 | 1998 Dodge Durango

1 Answer

I have a 1995 dodge neon and it has been out of commision for a yr. Went to go and start it up and nothing. engine turns over, but no power to the coils and no power to the fuel pump. I checked the relays...


it could be a crank sensor but you should have it on a scan tool to see if there is a signal being put out by the crank sensor before throwing parts at it

Nov 21, 2009 | 1995 Dodge Neon

1 Answer

95 dodge caravan 3.0 no spark


Check your Auto shutdown relay (ADS), if it's bad that will kill the fuel pump and ignition system too. If the fuel pump is bad or a short in the wire the (ADS) will trigger also. See if you could pull any DTC codes from the PCM. http://www.allpar.com/fix/codes.html Good luck and keep me posted, be glad to help.

Jun 09, 2009 | 1995 Dodge Caravan

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