Dtc Summary

Malfunction

DTCs

Monitoring Items

Detection Conditions

Trouble Areas

Detection Timings

Detection Logic

Leak detection pump

creates negative

pressure through

reference orifice and

P2419

Vent valve stuck closed

EVAP system pressure measured to determine leak criterion.

If system pressure higher than -1.06 kPa (-7.95 mmHg)* 4 seconds after leak detection pump turned ON, ECM determines that vent valve stuck closed.

• Canister pump module

• Connector/wire harness (Canister pump module - ECM)

• ECM

While ignition switch OFF

2 trip

leak detection pump

creates negative

pressure through

reference orifice and

EVAP system

pressure measured

to determine leak

• Canister pump

criterion. 0.02 inch

module

leak criterion

• Connector/wire

P2420

Vent valve stuck open (vent)

measured at start and at end of leak check.

If system pressure does not increase by more than 0.3 kPa (2.25 mmHg) within 10 seconds when vent valve turned ON, ECM determines that vent valve stuck close.

harness (Canister pump module - ECM)

• Leakage from EVAP system

While ignition switch OFF

2 trip

: The threshold value varies according to the atmospheric pressure measured in operation A. The value described above is based on an atmospheric pressure of 100 kPa (750.1 mmHg): absolute pressure. HINT:

The vent valve is built into the canister pump module. DESCRIPTION

The circuit description can be found in the EVAP (Evaporative Emission) System (see page ES-392). Refer to the EVAP System (see page ES-397).

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