Cummins/Onan RGA-IN1 — Start/Stop Switch Check (S11)
Testing & diagnosis · Start/stop switch S11
For the Cummins/Onan RGA-IN1, from the Cummins/Onan service manual.
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Procedure
- Remove battery B+ cable.
- Place ohmmeter leads across switch.
- Open and close switch while observing ohmmeter.
- NO switch: infinite resistance when open, continuity when closed.
- NC switch: continuity when closed, infinite resistance when open.
- Replace switch if defective.
Tools required
- ohmmeter Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
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.