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
fault starter/cable, faulty solenoid, faulty wiring harness, or undercharged battery.
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.
2000 cougar ,ignition relay has fuse 23 on inside fuse block energizing coils,faulty trunk ajar relay ?
Not much info to go on. Is the starter cranking the engine?
Not necessarily... there are two fuses for the fuel system
It has no relay.
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.
That 92 GMC van doesn't have a relay for ignition. Power for the ignition is supplied from the ignition switch.
Let me know 2
Faulty wiring, faulty ignition switch, or possibly a faulty neutral safety switch.
...could be allot of reasons why you may not be getting spark, here are some: # no power to ignition coil. faulty ignition. # faulty distributer cap, rotor. # faulty ignition module. # check for start signal from ecm. ...and there is a few more.
Take to auto electricians as I had the same problem and they found a conlog relay for ignition faulty. after it was replaced car was working fine.
Blown bulbs. Blown fuse. Faulty wiring. Faulty relay. Faulty switch.
IGN stands for ignition. DAB I do not know.