DTC P0182: Fuel Temperature Sensor "A" Circuit Low Input

OUTLINE OF DIAGNOSIS
Detect the open or short circuit of fuel temperature sensor.

Judge NG when out of the standard value.
COMPONENT DESCRIPTION

Fig 1: Fuel Temperature Sensor Cross Sectional View And Temperature-Resistance Graph (Low Input)
Courtesy of SUBARU OF AMERICA, INC.

ENABLE CONDITION

ENABLE CONDITIONS

Secondary Parameters	Enable Conditions
None

GENERAL DRIVING CYCLE
Always perform the diagnosis continuously after starting the engine.

DIAGNOSTIC METHOD

Judge NG when the continuous time of completing the malfunction criteria below becomes more than the time (2.5 seconds) needed for diagnosis. Judge OK and clear NG when the malfunction criteria below are not completed.

Judgment Value

JUDGMENT VALUE

Malfunction Criteria	Threshold Value
Output voltage	"LESS THAN EQUAL TO" 0.1 V

Time Needed for Diagnosis: 2.5 seconds

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

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
Fix the fuel temperature for control at 40°C (104°F).
ECM OPERATION AT DTC SETTING
Memorize the freeze frame data. (For test mode $02)