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Automatic shutdown relay -how does it work , what would make it activate and shutdown

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  • yadayada
    yadayada May 11, 2010

    there is no such thing as an auto shut down relay.

  • Jay Adkins Dec 22, 2012

    you're stupid



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93 dodge dakota has fire for a second or two when cranked and then nothing. does it have anything to do with the automatic shutdown relay?

I'm not sure on a 1993, but on the generation 2 Dakotas (1997-2004) the automatic shutdown relay will be deactivated (turning off power to coil and injectors) if the PCM does not receive a signal from the crankshaft position sensor.

Apr 01, 2017 | 1993 Dodge Dakota

1 Answer

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

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

How do you tell if the auto shutdown relay is bad

Any relay can be tested to some degree, but to be certain, just buy an inexpensive relay and try it in there,
The Automatic Shut Down relay is just one of many relays on your car. It takes battery power from the battery, and when activated by the computer, will pass that power on to the fuel injectors and to the ignition coil, some applications also it will work on the fuel pump. If the ASD relay is bad, no injector pulse, no power to coil, etc.-car won't start. When key is turned to off, the relay is not active-I think that may be why it's called auto shutdown relay.

Jun 08, 2012 | 2000 Plymouth Voyager

1 Answer

I have a clicking noise on the automatic shutdown relay vehicle wont start unless the clicking goes away

Hi Dave,
The Automatic Shutdown Relay is controlled by the Powertrain Control Module (PCM)
The first thing I would do is to do a THOROUGH check of your charging system. When the battery starts getting sulfated, it can cause the PCM to start acting really erratically. (They tend to get delirious from malnutrition)

Oct 13, 2011 | 1999 Jeep Cherokee

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

Low voltage from the automatic shutdown relay check engine code 41

Most likely auto shutdown relay is bad. Very common to go bad.

Mar 09, 2011 | 1994 Jeep Grand Cherokee

2 Answers


The power supplied to the fuel pump, ignition coil, fuel injectors, and parts of the power module is controlled by the logic module through the Automatic Shutdown Relay (ASD); the idea is to shut off fuel pressure and the ignition systems when the key is turned off to prevent fires, dieseling, and other problems.

The ASD relay is closed (allowing power to flow through it) when the ignition is first turned on. If the signal from the ignition reference is lost while the engine is running, or if the turbo boost pressure reaches and exceeds the over boost cut-off point, the logic module cuts power to the ASD, which in turn removes power from the fuel pump, ignition coil, injectors and those parts of the power module. This causes the engine to shut down.

Failure of the automatic shutdown relay is often shown as inexplicable stalling or refusal to start.

I’m happy to help further over the phone at

Mar 09, 2011 | Dodge Caravan Cars & Trucks

1 Answer

Vehicle will not start and stay running, the automatic shutdown relay fuse blows out right away.

automatic shutdown connection are, pcm C2#21 all fuel injectors, and heated oxygen sensors, check first the Ho2s sensors(4 pcs) located on exhaust pipe, look for burned-out

Jun 19, 2010 | 2000 Dodge Neon

1 Answer

Is the asd relay the same as the eatx relay on a 1995 dodge intrepid

The ASD = Automatic Shutdown Relay
The EATX = Electronic Automatic Transmission Relay.

Jan 20, 2010 | 1995 Dodge Intrepid

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