FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
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Test H: The Check Fuel Cap Warning Indicator Is Never/Always On

PINPOINT TEST H: THE CHECK FUEL CAP WARNING INDICATOR IS NEVER/ALWAYS ON

Normal Operation
The PCM monitors the fuel tank evaporative emission system for significant leaks that occur following refueling of the vehicle. The PCM sends a message to the instrument cluster (IC) over the controller area network (CAN) to illuminate the check fuel cap warning indicator.

This pinpoint test is intended to diagnose the following:
- PCM
- Instrument cluster (IC)


H1-H4: