Subaru Legacy IV (2008 year). Service manual — part 396
GD(H4DOTC)-34
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
Q: DTC P0112 INTAKE AIR TEMPERATURE SENSOR 1 CIRCUIT LOW
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 CONDITION
4. GENERAL DRIVING CYCLE
Always perform the diagnosis continuously.
5. DIAGNOSTIC METHOD
• Abnormality Judgement
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 Judgement
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
(A)
Air
(1)
Air flow sensor
(3)
Resistance value (
:)
(4)
Intake air temperature °C (°F)
(2)
Intake air temperature sensor
Secondary Parameters
Enable Conditions
None
Judgement Value
Malfunction Criteria
Threshold Value
Output voltage
< 0.230975449 V
Judgement Value
Malfunction Criteria
Threshold Value
Output voltage
t 0.230975449 V
EN-01767
(3)
(4)
(2)
(1)
(A)
GD(H4DOTC)-35
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
R: 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 CONDITION
4. GENERAL DRIVING CYCLE
Always perform the diagnosis continuously.
5. DIAGNOSTIC METHOD
• Abnormality Judgement
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 Judgement
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
(A)
Air
(1)
Air flow sensor
(3)
Resistance value (
:)
(4)
Intake air temperature °C (°F)
(2)
Intake air temperature sensor
Secondary Parameters
Enable Conditions
None
Judgement Value
Malfunction Criteria
Threshold Value
Output voltage
t 4.716 V
Judgement Value
Malfunction Criteria
Threshold Value
Output voltage
< 4.716 V
EN-01767
(3)
(4)
(2)
(1)
(A)
GD(H4DOTC)-36
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
S: DTC P0117 ENGINE COOLANT TEMPERATURE CIRCUIT LOW
1. OUTLINE OF DIAGNOSIS
Detect the open or short circuit of the engine coolant temperature sensor.
Judge as NG if out of specification.
2. COMPONENT DESCRIPTION
3. ENABLE CONDITION
4. GENERAL DRIVING CYCLE
Always perform the diagnosis continuously.
5. DIAGNOSTIC METHOD
• Abnormality Judgement
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 Judgement
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
(A)
Resistance value (k
:)
(B)
Temperature °C (°F)
(1)
Connector
(2)
Thermistor element
Secondary Parameters
Enable Conditions
None
Judgement Value
Malfunction Criteria
Threshold Value
Output voltage
< 0.264738528 V
Judgement Value
Malfunction Criteria
Threshold Value
Output voltage
t 0.264738528 V
EN-02917
(A)
(2)
(1)
(B)
GD(H4DOTC)-37
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
T: DTC P0118 ENGINE COOLANT TEMPERATURE CIRCUIT HIGH
1. OUTLINE OF DIAGNOSIS
Detect the open or short circuit of the engine coolant temperature sensor.
Judge as NG if out of specification.
2. COMPONENT DESCRIPTION
3. ENABLE CONDITION
4. GENERAL DRIVING CYCLE
Always perform the diagnosis continuously.
5. DIAGNOSTIC METHOD
• Abnormality Judgement
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 Judgement
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
(A)
Resistance value (k
:)
(B)
Temperature °C (°F)
(1)
Connector
(2)
Thermistor element
Secondary Parameters
Enable Conditions
None
Judgement Value
Malfunction Criteria
Threshold Value
Output voltage
t 4.716 V
Judgement Value
Malfunction Criteria
Threshold Value
Output voltage
< 4.716 V
EN-02917
(A)
(2)
(1)
(B)
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