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Volvo All Engines (2010 Emissions) Fault Code: SPN 975 FMI 3 PID: Estimated Percent Fan Speed

Volvo All Engines (2010 Emissions) Fault Code: SPN 975 FMI 3 PID: Estimated Percent Fan Speed

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Created by potrace 1.16, written by Peter Selinger 2001-2019 Installation with TeamViewer for free

The auxiliary fan provides extra engine cooling based on requests from the engine control module (ECM)

Conditions for diagnostic trouble code (DTC):
1) Engine running
2) The voltage at pin A14.EA:35 is more than 7.8?V

Observable symptoms
1) Fan noise
2) The fan will either be fully engaged or fully disengaged. Engaging and disengaging will however take some time.
3) High fuel consumption

Probable cause
1) Fan speed sensor
2) Wiring harness
3) Connector
4) Engine control module (ECM)

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