Cummins/Onan RGA-IN1 — Start Solenoid Check (K11)
Testing & diagnosis · Start solenoid K11
For the Cummins/Onan RGA-IN1, from the Cummins/Onan service manual.
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Procedure
- Apply battery positive (B+) to terminal marked S.
- Connect ground wire to solenoid terminal marked I.
- Solenoid should activate.
- If contacts good, battery voltage should be read between terminal 1 and ground.
- Voltage drop across contacts should never exceed one volt.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- 1 volt max drop
Source: Cummins/Onan service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.