Kohler — GCU Ohms Tests
Testing & diagnosis · Governor control unit
From a Kohler service manual covering: ECV850, ECV860, ECV870, ECV880. Check it applies to your exact model before use.
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Procedure
- Remove GCU from bracket and unplug harness.
- Test 1: measure resistance between identified wire ends.
- Resistance should be 47.7-58.3 ohms.
- Test 2: repeat for other wire ends.
- Resistance should be 47.7-58.3 ohms.
Tools required
- Digital multimeter Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Resistance: 47.7-58.3 ohms
Source: Kohler 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.