Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Starter Solenoid: Testing and Inspection






Make sure that the starter solenoid is isolated electrically from the starter motor. Using an ohmmeter, measure resistance between S-terminal and M-terminal, and between S-terminal and ground (starter frame and magnet). If resistance is greater than 0.08 Ohm 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 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. Measure resistance between the starter solenoid M-terminal and the starter solenoid housing.
2. If resistance is greater than 0.08 Ohm, replace the starter solenoid.