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DTC P0462 FUEL LEVEL SENSOR CIRCUIT LOW INPUT

DTC P0462 FUEL LEVEL SENSOR CIRCUIT LOW INPUT

OUTLINE OF DIAGNOSIS

Detect the open or short circuit of fuel level sensor. Judge NG when out of the standard value.

COMPONENT DESCRIPTION


(1)

Engine control module (ECM)

(2)

Fuel level sensor

(3)

Fuel sub level sensor

(4)

Detecting circuit



ENABLE CONDITION

Secondary Parameters Enable Conditions
None



GENERAL DRIVING CYCLE

Always perform the diagnosis continuously

DIAGNOSTIC METHOD

Abnormality Judgment

Judge NG when the continuous time of completing the malfunction criteria below becomes more than the time needed for diagnosis (2.5 seconds).

Judgment Value

Malfunction Criteria Threshold Value
Ignition switch

ON

Battery voltage

≥ 10.9 V

After engine starting

3 seconds or more

Output voltage

< 0.015 V



Time Needed for Diagnosis: 2.5 seconds

Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

Normality Judgment

Judge OK and clear the NG when the malfunction criteria below are completed.

Judgment Value

Malfunction Criteria Threshold Value
Ignition switch

ON

Battery voltage

≥ 10.9 V

After engine starting

3 seconds or more

Output voltage

< 0.015 V



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

None

ECM OPERATION AT DTC SETTING

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