If you mean the relay that controls the starter motor then it is fairly simple. There are 2 possible faults.
1) The relay is working, but is broken or burned out internally. You will hear a click from the engine bay when the key is turned but the starter motor will not do anything, not even engage.
2) The relay is broken. In this case nothing at all will happen when the key is turned.
a relay used in the starting of cars..randy niehoff
In the absence of a fuel system shut off as in an alarm system I would suspect a fuel pump fuse, or faulty ignition switch
follow the wire from the positive side of the battery it will lead you to it
it is a fuse that protects the ignition relay from too much current. a bad fuse would cause a no start, and if you pull the fuse, its center core will be burnt out if it is bad.
A signal from the ignition switch closes the contacts in the relay to allow current to flow to the starter.
If the indicator relay is buzzing when the ignition is off, it may indicate a short circuit or a faulty relay. This can cause the relay to remain energized even without power from the ignition. It's advisable to check the wiring connections and the relay itself for any signs of damage or malfunction. If necessary, replace the relay to resolve the issue.
2000 cougar ,ignition relay has fuse 23 on inside fuse block energizing coils,faulty trunk ajar relay ?
To determine if the starter relay is bad, you can perform a few checks. First, listen for a clicking sound when you turn the ignition key; if there's no sound, the relay may be faulty. You can also test the relay by bypassing it with a jumper wire; if the starter activates, the relay is likely the issue. Additionally, using a multimeter to check for continuity can confirm whether the relay is functioning properly.
Not much info to go on. Is the starter cranking the engine?
Not necessarily... there are two fuses for the fuel system
When an ignition relay stops working, the vehicle may fail to start or experience intermittent starting issues. This occurs because the relay is responsible for supplying power to the ignition system and, if it malfunctions, the necessary electrical signals may not reach the starter motor or other components. Additionally, symptoms such as dashboard warning lights or a clicking sound when turning the key can arise. In many cases, replacing the faulty relay can restore proper function.
It has no relay.
Let me know 2
That 92 GMC van doesn't have a relay for ignition. Power for the ignition is supplied from the ignition switch.
I note the relay (part No NCL100040) is called an "ignition and glow plug heater relay". The 75 will usually start if you turn the key before the glow plugs have heated, therefore the glow plugs are probably only needed for cold starts. Glow plugs are not needed when a diesel engine is hot. The "ignition" reference may mean that some other circuit is controlled by this relay (obviously there is no conventional ignition as it is a diesel). FYI The part is also used on the Range Rover TD6 post 2002 An internet search suggest the cam sensor can cause starting problems and fault codes similar to a faulty glow plug relay.
The ignition lamp thermal time delay relay in a 1990 Grand Voyager can get hot and potentially kill the engine due to prolonged current flow or short circuits within the relay. If the relay is malfunctioning, it may not properly interrupt the electrical circuit, causing excessive heat buildup. This overheating can lead to a failure in the relay, disrupting the ignition system and ultimately causing the engine to stall. Regular inspection and replacement of faulty relays can help prevent such issues.
IGN stands for ignition. DAB I do not know.