Stratus Coupe L4-2.4L VIN G (2003)
1. When current flows through the coil of a relay, its core is magnetized to attract the iron piece, closing (ON) the contact at the tip of the iron piece.
When the coil current is turned off, the iron piece returns to its original position by a spring, opening the contact (OFF).
2. By using a relay, a heavy current can be turned on and off by a switch using much less current. For example, in the circuit shown here, when the
switch is turned on (closed), current flows to the coil of the relay. Then, its contact is turned on (closed) and the light comes on. The current
flowing through the switch is much less than that for the light.
3. Relays may be classified as the normally open-type or the normally closed-type, depending on their contact construction.
When a normally closed relay as illustrated here is checked, there should be continuity between terminals 1 and 2 and between terminals 3 and 4
when the relay is deenergized. There should be no continuity between terminals 3 and 4 when battery voltage is applied between terminals 1 and 2.
Checking Switches
In a circuit diagram, a switch is shown in the normal condition.
