Volvo Penta Group 23 EDC III — Checking the coolant level sensor
Testing & diagnosis · Coolant level monitor
For the Volvo Penta Group 23 EDC III, from the Volvo Penta service manual.
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Before you start
- NEVER open the expansion tank's pressure cap when the engine is warm. Hot coolant could spray out, causing burns.
Procedure
- Empty the coolant from the expansion tank.
- Disconnect the connector from the coolant sensor.
- Check that the contact is activated and sends a signal when the expansion tank is empty.
- Fill the expansion tank with coolant and check that resistance remains the same.
Source: Volvo Penta 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.