How does the automatic shut down relay work?
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. The ASD relay shuts down the fuel ignition and the fuel pressure immediately after the ignition key is turned off; this is done to prevent problems like fire, dieseling, etc.
Where is the ASD relay located in the engine?
kudran, yes it can. The ASD relay is located in the Integrated Power Module (IPM), in the engine compartment. Refer to label on PDC cover for relay location. To test the relay see if this helps. When the PCM energizes the ASD and fuel pump relays, terminal 87 connects to terminal 30. This is the On position.
Where does terminal 87 connect to the fuel pump 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 circuit. The following procedure applies to the ASD and fuel pump relays.
What are the signs of a bad shutdown relay?
Common signs include the car starting but stalling immediately, the Check Engine Light turning on, and the engine not cranking when turning the key. 1. Car starts but immediately stalls 2. Engine does not crank 3. Check Engine Light comes on
What to do if your automatic shutdown relay has failed?
For this reason, if you suspect that the ASD relay has failed, or is having a problem, have the vehicle serviced by a professional technician, such as one from YourMechanic to determine if the car needs an automatic shutdown relay replacement, or if another issue needs to be addressed.
Why is my ASD relay not working properly?
The ASD relay supplies power to the vehicle’s ignition coils and fuel injectors, which are some of the most important components of the entire engine management system. If the ASD is having any problems that interfere with its ability to supply power to the injectors, coils, or whatever other circuits it may feed,…
Can a closed relay cause a car to fail?
Open Relay, No voltage from switch. Closed Relay, Voltage flowing from switch. As with most electrical components, the (ASD) relay is subject to the normal wear and tear associated with normal service. So, When it fails, it can cause problems for the entire vehicle.
What should I do if my Nissan immobilizer fails to start?
If the engine fails to start using a registered key (for example, when interference is caused by another registered key, an automated toll road device or automatic payment device on the key ring), restart the engine using the following procedures. 1. Leave the ignition switch placed in the ON position for approximately 5 seconds. 2.