Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. Manual - part 324

GD(H4DOTC)-48

Diagnostic Trouble Code (DTC) Detecting Criteria

GENERAL DESCRIPTION

5. DIAGNOSTIC METHOD

• Abnormality Judgment
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Time Needed for Diagnosis: 500 ms

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
• Normality Judgment
Judge as OK and clear the NG if the continuous time while the following conditions are established is more

than the predetermined time.

Time Needed for Diagnosis: Less than 1 second

Judgment Value

Malfunction Criteria

Threshold Value

Output voltage

< 0.395 V

Judgment Value

Malfunction Criteria

Threshold Value

Output voltage

≥ 0.395 V

GD(H4DOTC)-49

Diagnostic Trouble Code (DTC) Detecting Criteria

GENERAL DESCRIPTION

AD:DTC P0113 INTAKE AIR TEMPERATURE SENSOR 1 CIRCUIT HIGH

1. OUTLINE OF DIAGNOSIS

Detect open or short circuit of the intake air temperature sensor.

Judge as NG if out of specification.

2. COMPONENT DESCRIPTION

3. ENABLE CONDITIONS

4. GENERAL DRIVING CYCLE

Always perform the diagnosis continuously.

(A)

Air

 

 

 

 

 

 

 

 

 

 

(1)

Air flow sensor

(3)

Resistance value (Ω)

(4)

Intake air temperature °C (°F)

(2)

Intake air temperature sensor

 

 

 

 

Secondary Parameters

Enable Conditions

None

 

EN-01767

(3)

(4)

(2)

(1)

(A)

GD(H4DOTC)-50

Diagnostic Trouble Code (DTC) Detecting Criteria

GENERAL DESCRIPTION

5. DIAGNOSTIC METHOD

• Abnormality Judgment
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Time Needed for Diagnosis: 500 ms

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
• Normality Judgment
Judge as OK and clear the NG if the continuous time while the following conditions are established is more

than the predetermined time.

Time Needed for Diagnosis: Less than 1 second

Judgment Value

Malfunction Criteria

Threshold Value

Output voltage

≥ 4.712 V

Judgment Value

Malfunction Criteria

Threshold Value

Output voltage

< 4.712 V

GD(H4DOTC)-51

Diagnostic Trouble Code (DTC) Detecting Criteria

GENERAL DESCRIPTION

AE:DTC P0116 ENGINE COOLANT TEMPERATURE SENSOR 1 CIRCUIT 

RANGE/PERFORMANCE

1. OUTLINE OF DIAGNOSIS

Detect the malfunction of the engine coolant temperature sensor characteristics.

When the ignition is ON after the specified period of soaking time has elapsed, compare the engine coolant

temperature with intake air temperature. Judge as NG if the difference between two temperatures is larger

than the predetermined value and the engine coolant temperature becomes the specified value or more.

2. COMPONENT DESCRIPTION

3. ENABLE CONDITIONS

4. GENERAL DRIVING CYCLE

Perform the diagnosis only once after starting the engine.

(A)

Resistance value (kΩ)

(B)

Temperature °C (°F)

 

 

 

 

 

 

 

 

(1)

Connector

(2)

Thermistor element

 

 

Secondary Parameters

Enable Conditions

Battery voltage

≥ 10.9 V

Soaking time

≥ 21600 s

Engine coolant temperature at the last engine stop

≥ Value from Map

Map (Models without SI-DRIVE)

Estimate ambient temperature
°C (°F)

–7

(19.4)

8

(46.4)

10

(50)

25

(77)

Engine coolant temperature at the last engine stop
°C (°F)

57

(134.6)

57

(134.6)

57

(134.6)

57

(134.6)

Map (Models with SI-DRIVE)

Estimate ambient temperature
°C (°F)

–7

(19.4)

8

(46.4)

10

(50)

25

(77)

Engine coolant temperature at the last engine stop
°C (°F)

60

(140)

60

(140)

60

(140)

60

(140)

EN-02917

(A)

(2)

(1)

(B)