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Home >> Toyota >> 2003 >> Sienna LE >> Repair and Diagnosis (Single Page) >> Engine Performance >> Testing & Diagnosis >> Engine Controls - Basic Diagnostic Procedures - V6 & V8 >> Fuel Systems >> Notes
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Fuel Systems: Notes

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

WARNING: ALWAYS release fuel pressure before disconnecting any fuel injection-related component. DO NOT allow fuel to contact engine or electrical components.