C 2500 Truck 2WD V8-5.7L VIN R (1997)
Solenoid Test Connections
A. If solenoid is not removed from starter motor, the field lead must be removed from the terminal on the solenoid before making these tests.
Make test connections.
NOTICE: To prevent overheating the pull-in winding, do not leave the winding energized more than 15 seconds. The current draw will
decrease as the winding temperature increases.
B. To check both windings, connect an ammeter in series with a 12 volt battery and the "switch" terminal on the solenoid. Connect a
voltmeter to the "switch" terminal and to ground. Connect a carbon pile across the battery. Ground the solenoid motor terminal. Adjust the
voltage to 10 volts and note the ammeter reading. It should be 55 to 85 amperes.
C. Note the ampere reading. A high reading indicates a shorted or grounded winding, and a low reading indicates excessive resistance.
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The resistance of the windings can be read directly using a digital ohmmeter that can measure tenths of an ohm.
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Coil resistance can be determined by dividing the voltage by the current (amperes) listed in SD Starter Motor Specifications.
