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Home >> Volvo >> 2001 >> S40 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Basic Diagnostic Procedures >> Fuel Systems >> Notes

Fuel Systems: Notes

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NOTE: For wire color and terminal identification, see appropriate ENGINE PERFORMANCE WIRING DIAGRAM article.
WARNING: Always relieve fuel pressure before disconnecting any fuel injection-related component. DO NOT allow fuel to contact engine or electrical components.

Basic diagnosis of fuel system should begin by checking fuel pump operation and fuel pressure.