Kohler ECV940 / ECV980 — Crankshaft Position Sensor Test
Testing & diagnosis
For the Kohler ECV940 / ECV980, from the Kohler service manual.
Applies to: Kohler ECV940, Kohler ECV980
Procedure
- Inspect wiring and connections for damage or problems.
- Make sure engine has resistor type spark plugs.
- Disconnect Black connector from ECU.
- Connect ohmmeter between #4 and #13 pin terminals; resistance 325-395 Ω at room temperature (20°C, 68°F).
- If resistance correct, remove blower housing; disconnect sensor connector from harness; test resistance between terminals 325-395 Ω.
- If resistance incorrect, remove screws securing sensor to bracket and replace sensor.
- If step 4 incorrect but sensor alone correct, test wire harness circuits between sensor connector and pins #4 and #13; correct problem and retest.
- When fault corrected and engine starts, clear fault codes following ECU Reset procedure.
Tools required
- Ohmmeter Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- 325-395 Ω at room temperature (20°C, 68°F)
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.