Starter Solenoid: Testing and Inspection
STARTER SOLENOIDMake sure that the solenoid is isolated electrically from the starter motor. Using a Rotunda 73 Digital Multimeter 105-00051 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:
- open wire; replace starter solenoid.
- ice, dirt or other foreign material preventing contact; service as necessary.
SOLENOID S TERMINAL CIRCUIT RESISTANCE CHECK
Using Rotunda 73 Digital Multimeter 105-00051 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 105-00051 or equivalent, check for continuity between the solenoid M terminal and the solenoid housing.
2. If there is no continuity, replace the starter solenoid.