Monitor Strategy

Required Sensors/Components

Canister pump module

Frequency of Operation

Once per driving cycle: P0451 sensor fixed

Continuous: P0451 sensor noise, P0450, P0452 and P0453

Duration

-

MIL Operation

Immediate: P0450, P0452 and P0453 2 driving cycles: P0451

Sequence of Operation

None

TYPICAL ENABLING CONDITIONS

P0451 (Noise monitor):

Monitor runs whenever these DTCs not present

None

Atmospheric pressure (absolute pressure)

70 kPa (525 mmHg) or more, less than 110 kPa (825 mmHg)

Battery voltage

10.5 V or more

Intake air temperature

4.4°to 35°C (40° to 95°F)

Either of following conditions met

A or B

A. Engine

Running

B. Soak time (ignition switch OFF time)

5 hours

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