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Home >> Suzuki >> 2008 >> XL7 Base, AWD >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine General Information And Diagnosis >> Diagnostic Information and Procedures >> DTC P0496 >> Circuit Description
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Circuit Description

This DTC tests for continuous intake manifold vacuum flow to the Evaporative Emission (EVAP) System. The control module seals the EVAP system by commanding the EVAP canister purge solenoid valve Closed and the EVAP canister vent solenoid valve Closed. The control module monitors the fuel tank pressure (FTP) sensor to determine if a vacuum is being drawn on the EVAP system. If vacuum in the EVAP system is greater than a predetermined value within a predetermined time, this DTC sets.

FTP SENSOR SIGNAL VOLTAGE AND FUEL TANK PRESSURE REFERENCE

FTP Sensor Signal Voltage Fuel Tank Pressure
High, Approximately 1.5 Volts or More Negative Pressure/Vacuum
Low, Approximately 1.5 Volts or Less Positive Pressure
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