Other

What controls the ASD relay?

What controls the ASD relay?

So, the ground circuit within the automatic shutdown (ASD) relay, is controlled by the powertrain control module (PCM). Consequently, the (PCM) operates the automatic shutdown (ASD) relay, by switching its ground circuit ON and OFF.

How do you remove an ASD relay?

Step 1: Pull the relay out using your fingers. Once you locate the relay you are going to replace, you can pull the relay out by using your fingers in most cases. Using the pull with a light side to side rocking motion to get it out. In some cases you may need a pair of pliers to remove it.

Where is the relay located?

It can be in the fuse box (also called a power box), the fuse panel under the dash, or on the right fender. Most cars will have it located under the hood, inside the long box with a black cover. Often called the fuse box, this is where a vehicle’s fuses and relays are mounted.

What are the symptoms of a bad ASD relay?

Symptoms of a Bad or Failing Automatic Shutdown Relay

  • Car starts but immediately stalls. One of the most common symptoms of a bad ASD relay is an engine that will start, but stall out almost immediately, or at random times.
  • Engine does not crank.
  • Check Engine Light comes on.

What does an automatic shut down relay do?

The Automatic Shutdown (ASD) relay controls the power supplied to the fuel injectors, ignition coil, oxygen sensor heater elements, and other parts of the power module.

What is auto shutdown relay?

What is the function of the automatic shut off relay?

The function of the automatic shutdown (ASD) relay is to shut off power to major systems. When the key is turned off, as a safety feature. So, When the automatic shutdown (ASD) relay is on; it supplies battery voltage (12+ volts) to the fuel injectors and ignition coil (s).

What is the function of the ASD relay on a car?

The function of the automatic shutdown (ASD) relay is, to shut off power to major systems. When the key is turned off, as a safety feature. So, when the automatic shutdown (ASD) relay is on; it supplies battery voltage (12+ volts) to the fuel injectors and ignition coil (s).

Where is the ASD relay on a Chevy Silverado?

First, the terminal number 30 is connected to the battery voltage. Note that terminal 30 is always connected to the battery for both the fuel pump and the automatic shutdown relay. The Powertrain control module grounds the ASD relay from the side of the coil through terminal 85.

What are the terminals on a fuel pump relay?

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.

https://www.youtube.com/watch?v=n3VruS9qSVI