Starter Solenoid: Testing and Inspection

STARTER SOLENOID
Make sure that the starter solenoid is isolated electrically from the starter motor. Using a Rotunda 73 Digital Multimeter 105-R0051 or equivalent, check for continuity between S-terminal and M-terminal, and between S-terminal and ground starter frame and magnet. If there is no continuity, the following conditions may exist:
1. Open wire; replace starter solenoid.
2. Ice, dirt or other foreign material preventing contact; service as necessary.

SOLENOID S-TERMINAL CIRCUIT RESISTANCE
Using Rotunda 73 Digital Multimeter 105-R0051 or equivalent, check the resistance of the entire S-terminal circuit, including all the switches, wires, and connections. Resistance should be less than 0.08 ohm.







SOLENOID M-TERMINAL
1. Using Rotunda 73 Digital Multimeter 105-R0051 or equivalent, check for continuity between the solenoid M-terminal and the solenoid housing.
2. If there is no continuity, replace the starter solenoid.