Subaru Legacy IV (2008 year). Service manual — part 196
GD(H4SO)-86
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
AX:DTC P0327 KNOCK SENSOR 1 CIRCUIT LOW (BANK 1 OR SINGLE SENSOR)
1. OUTLINE OF DIAGNOSIS
Detect the open or short circuit of knock 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: 1000 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)
To knock sensor harness
(1)
Case
(3)
Piezoelectric element
(5)
Resistance
(2)
Weight
(4)
Nut
Secondary Parameters
Enable Conditions
None
Judgement Value
Malfunction Criteria
Threshold Value
Output voltage
< 0.243 V
Judgement Value
Malfunction Criteria
Threshold Value
Output voltage
t 0.243 V
EN-01707
(1)
(2)
(3)
(4)
(5)
(A)
GD(H4SO)-87
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
AY:DTC P0328 KNOCK SENSOR 1 CIRCUIT HIGH (BANK 1 OR SINGLE SENSOR)
1. OUTLINE OF DIAGNOSIS
Detect the open or short circuit of knock 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: 1000 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)
To knock sensor harness
(1)
Case
(3)
Piezoelectric element
(5)
Resistance
(2)
Weight
(4)
Nut
Secondary Parameters
Enable Conditions
None
Judgement Value
Malfunction Criteria
Threshold Value
Output voltage
t 4.709 V
Judgement Value
Malfunction Criteria
Threshold Value
Output voltage
< 4.709 V
EN-01707
(1)
(2)
(3)
(4)
(5)
(A)
GD(H4SO)-88
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
AZ:DTC P0335 CRANKSHAFT POSITION SENSOR “A” CIRCUIT
1. OUTLINE OF DIAGNOSIS
Detect the open or short circuit of the crankshaft position sensor.
Judge as NG when the crank signal is not input even though the starter was rotated.
2. COMPONENT DESCRIPTION
3. ENABLE CONDITION
4. GENERAL DRIVING CYCLE
Always perform the diagnosis continuously.
(A)
Cam signal
(B)
Crankshaft signal
(1)
Crankshaft position sensor
(2)
Crank sprocket
(3)
Crankshaft half-turn
Secondary Parameters
Enable Conditions
None
(A)
(B)
10 CA
#1BTDC10 CA
#3BTDC10 CA
#2BTDC10 CA
#4BTDC10 CA
#1BTDC10 CA
30 CA 30 CA
EN-05538
(1)
(2)
(3)
EN-05539
GD(H4SO)-89
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
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: 3000 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
Judgement Value
Malfunction Criteria
Threshold Value
Starter switch
ON
Crankshaft position sensor signal
Not detected
Battery voltage
t 8 V
Judgement Value
Malfunction Criteria
Threshold Value
Crankshaft position sensor signal
Input exists
Battery voltage
t 8 V
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