LEMON Manuals
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Volvo
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2012
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XC90 Base, FWD
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Repair and Diagnosis (Single Page)
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Engine Performance
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Engine Control Systems
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Ignition And Engine Control Systems - Specifications, Other
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Vehicle Communication Information, Engine Control Module (ECM) (B5254T2; 2005-2007)
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Description Of Detailed Diagnostic Trouble Code Information Readout
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Description Of Frozen Values
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Engine Speed (Rpm)
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Engine Speed (Rpm)
The engine control module (ECM) calculates engine speed from the impulse sensor signal.