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DTC P0450: FUEL TANK PRESSURE SENSOR CIRCUIT Chevrolet Tracker II

Testing & Diagnostics 1 illustration

Note. For circuit reference, see WIRING DIAGRAMS article.

Scheme 10

Scheme 10: DTC P0450: FUEL TANK PRESSURE SENSOR CIRCUIT

Scheme 10: DTC P0450: FUEL TANK PRESSURE SENSOR CIRCUIT

Circuit Description

Fuel Tank Pressure (FTP) sensor responds to changes in fuel tank pressure or vacuum. FTP sensor signal voltage to PCM varies from greater than 4 volts, with pressure in fuel tank, to a minimum of 0.6 volt with a high vacuum condition in fuel tank (vent solenoid closed).