E Purge VSV Monitor

1) After completing an EVAP leak check, the ECM turns ON (open) the purge VSV with the leak detection pump actuated, and introduces the atmospheric pressure from the intake manifold to the canister.

2) If the pressure change at this time is within the normal range, the ECM determines the condition to be normal.

3) If the pressure is out of the normal range, the ECM will stop the purge VSV monitor and store DTC P0441 in its memory.

Atmosphere

Atmosphere

Purge VSV Monitor 060XA26C

f. Repeat 0.02 in. Leak Pressure Measurement

1) While the ECM operates the leak detection pump, the purge VSV and vent valve turns off and a repeat 0.02 in. leak pressure measurement is performed.

2) The ECM compares the measured pressure with the pressure during EVAP leak check.

3) If the pressure during the EVAP leak check is below the measured value, the ECM determines that there is no leakage.

4) If the pressure during the EVAP leak check is above the measured value, the ECM determines that there is a small leak and stores DTC P0456 in its memory.

Purge VSV (OFF)

Atmosphere \

Purge VSV (OFF)

Atmosphere \

Atmospheric Pressure System Pressure

0.02 in. Pressure

Purge VSV

Vent Valve

Pump Motor

Repeat 0.02 in. Pressure Measurement

060XA28C

Purge VSV

Vent Valve

Pump Motor

Atmospheric Pressure System Pressure

0.02 in. Pressure

Repeat 0.02 in. Pressure Measurement

060XA28C

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Responses

  • JODI
    What is purge vsv 2012 camry?
    8 years ago

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