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Volvo
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2000
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S40 L4-1.9L Turbo VIN 25 B4204T2
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Repair and Diagnosis
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Instrument Panel, Gauges and Warning Indicators
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Testing and Inspection
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Component Tests and General Diagnostics
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Description of On-Board Diagnostics
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General
General
Combined Instrument Panel Diagnostic Functions
General
The control module has a built-in diagnostic system, the Volvo on-board diagnostic (OBD) system. This system continuously monitors itself and the input and output signals.