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DTC P0453 EVAPORATIVE EMISSION CONTROL SYSTEM PRESSURE SENSOR HIGH INPUT

DTC P0453 EVAPORATIVE EMISSION CONTROL SYSTEM PRESSURE SENSOR HIGH INPUT

OUTLINE OF DIAGNOSIS

Detect the breaking/shortage of the fuel tank pressure sensor.

Judge NG when out of the standard value.

COMPONENT DESCRIPTION


(1)

Connector

(A)

Output voltage

(C)

To fuel tank

(2)

Terminal

(B)

Input voltage

(D)

To atmospheric pressure switching solenoid



ENABLE CONDITION

Secondary Parameters Enable Conditions
Vehicle speed

≥ 2 km/h (1.24 MPH)

All conditions of EVAP canister purge

Complete

Evaporation gas density learning value

≤ 0.08

Main feedback compensation coefficient

≥ 0.9

Battery voltage

≥ 10.9 V



GENERAL DRIVING CYCLE

Perform the diagnosis continuously when purging.

DIAGNOSTIC METHOD

Abnormality Judgment

Judge NG when the continuous time until completing the malfunction criteria below becomes more than 15 seconds.

Judgment Value

Malfunction Criteria Threshold Value
Fuel tank pressure

> 7.98 kPa (59.86 mmHg, 2.36 inHg)

Fuel temperature

< 35°C (95°F)

Atmospheric pressure

≥ 75.1 kPa (563 mmHg, 22.2 inHg)



Time Needed for Diagnosis: 15 seconds

Malfunction Indicator Light Illumination: Illuminates as soon as malfunction occurs.

Normality Judgment

Judge OK when the malfunction criteria below is completed.

Judgment Value

Malfunction Criteria Threshold Value
Fuel tank pressure

≤ 7.98 kPa (59.86 mmHg, 2.36 inHg)



DTC CLEAR CONDITION


When the OK idling cycle was completed 40 times in a row

When “Clear Memory” was performed


MALFUNCTION INDICATOR LIGHT CLEAR CONDITION


When the OK driving cycle was completed 3 times in a row

When “Clear Memory” was performed


FAIL SAFE

Purge control solenoid valve control: Purge fixation mode is prohibited.

ECM OPERATION AT DTC SETTING

Memorize the freeze frame data. (For test mode $02)