ELECTRICAL SYSTEMS
7 - 24 Mid-Mount Z Service Manual
Purpose
The solenoid’s purpose is simply to protect the ignition
switch from the high current drawn by the starter motor.
How It Works
The solenoid has really only two parts. One is a coil of
wire wrapped around an iron core. Whenever 12 volts
is applied to the coil, it becomes a magnet. The other
part is a steel bar type switch. Because it is made of
steel it can easily handle the high current loads
produced by the starter motor. So how does it protect
the ignition switch? When 12 volts is applied to the coil,
it becomes an electromagnet. This quickly pulls the
steel bar toward the contacts and closes the switch.
When power is removed from the coil, the spring
loaded bar returns to its “normally open” position. Note:
The solenoid closes and opens the switch very quickly.
This minimizes the “arcing” that can damage other type
switches.
Testing
1. Disconnect the solenoid from the wiring harness.
2. Check to ensure that terminals “c” and “d” are not
continuous.
3. Apply a 12 volt power source to “a” and the case.
You should be able to hear the solenoid switch
“click” when you make the connection.
4. Verify that the switch has closed by making sure
that terminals “c” and “d” are closed when power
is applied to terminals “a” and “b”.
Solenoid
A
B
C
D
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