Volvo Penta Group 23 EDC III — Checking the coolant temperature sensor
Testing & diagnosis
For the Volvo Penta Group 23 EDC III, from the Volvo Penta service manual.
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Procedure
- Disconnect the connector and remove the sensor from the engine.
- Measure resistance between both contact pins with multimeter 9510060-8.
- Compare displayed values against the resistance table (0–100°C).
Tools required
- 9510060-8 Multimeter Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- 0°C/32°F: 4930 Ω ± 440 Ω
- 20°C/68°F: 1870 Ω ± 140 Ω
- 40°C/104°F: 800 Ω ± 50 Ω
- 60°C/140°F: 370 Ω ± 20 Ω
- 80°C/176°F: 190 Ω ± 8 Ω
- 100°C/212°F: 104 Ω ± 4 Ω
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.