Subaru Legacy IV (2008 year). Service manual — part 410
GD(H4DOTC)-90
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
AZ:DTC P0336 CRANKSHAFT POSITION SENSOR “A” CIRCUIT RANGE/
PERFORMANCE
1. OUTLINE OF DIAGNOSIS
Detect for faults in crankshaft position sensor output properties.
Judge as NG when there is a problem in the number of crankshaft signals for every revolution.
2. COMPONENT DESCRIPTION
3. ENABLE CONDITION
(A)
Camshaft signal (RH)
(B)
Camshaft signal (LH)
(C)
Crankshaft signal
(1)
Crankshaft position sensor
(2)
Crank sprocket
(3)
Crankshaft half-turn
Secondary Parameters
Enable Conditions
Battery voltage
t 8 V
Engine speed
< 3000 rpm
EN-03269
(A)
(C)
30 CA 30 CA
(B)
#1BTDC10 CA
#3BTDC10 CA
#2BTDC10 CA
#4BTDC10 CA
#1BTDC10 CA
50 CA
50 CA
50 CA
50 CA
50 CA
50 CA
10 CA
EN-01780
(1)
(2)
(3)
GD(H4DOTC)-91
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
4. GENERAL DRIVING CYCLE
Perform the diagnosis continuously under 3000 rpm engine speed.
5. DIAGNOSTIC METHOD
• Abnormality Judgement
Judge as NG when the following conditions are established.
Time Needed for Diagnosis: 10 engine revs.
Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cy-
cles.
• 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
Cylinder number identification
Completed
Amount of crank sensor signal during 1 rev.
Not = 30
Judgement Value
Malfunction Criteria
Threshold Value
Cylinder number identification
Completed
Amount of crank sensor signal during 1 rev.
= 30
GD(H4DOTC)-92
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
BA:DTC P0340 CAMSHAFT POSITION SENSOR “A” CIRCUIT (BANK 1 OR SINGLE
SENSOR)
1. OUTLINE OF DIAGNOSIS
Detect the open or short circuit of the camshaft position sensor.
Judge as NG when the number of camshaft signals remains abnormal.
2. COMPONENT DESCRIPTION
3. ENABLE CONDITION
4. GENERAL DRIVING CYCLE
Always perform the diagnosis continuously.
(A)
Camshaft signal (RH)
(C)
Crankshaft signal
(D)
Number of camshaft position sig-
nals = When normal, there will be
3 cam signals for every 2 engine
revolutions.
(B)
Camshaft signal (LH)
Secondary Parameters
Enable Conditions
Battery voltage
t 8 V
EN-01853
(A)
(C)
10 CA
30 CA 30 CA
(B)
#1BTDC10 CA
#3BTDC10 CA
#2BTDC10 CA
#4BTDC10 CA
#1BTDC10 CA
50 CA
50 CA
50 CA
50 CA
50 CA
50 CA
(D)
GD(H4DOTC)-93
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
5. DIAGNOSTIC METHOD
• Abnormality Judgement 1
Judge as NG when the condition where the number of camshaft position sensor signals are less than 3
time(s) during 2 engine revs. continues.
Time Needed for Diagnosis: Two engine revolutions × 50 time(s)
Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
• Normality Judgement 1
Judge as OK and clear the NG when the malfunction criteria below are met.
Time Needed for Diagnosis: Two engine revolutions
• Abnormality Judgement 2
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
• Normality Judgement 2
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
BB:DTC P0345 CAMSHAFT POSITION SENSOR “A” CIRCUIT (BANK 2)
1. OUTLINE OF DIAGNOSIS
NOTE:
For the detection standard, refer to DTC P0340. <Ref. to GD(H4DOTC)-92, DTC P0340 CAMSHAFT POSI-
TION SENSOR “A” CIRCUIT (BANK 1 OR SINGLE SENSOR), Diagnostic Trouble Code (DTC) Detecting
Criteria.>
Judgement Value
Malfunction Criteria
Threshold Value
Amount of camshaft sensor signal during
2 revs.
< 3 time(s)
Judgement Value
Malfunction Criteria
Threshold Value
Camshaft position sensor signal
t 3 time(s)
Judgement Value
Malfunction Criteria
Threshold Value
Starter
ON
Camshaft position sensor signal
No input
Judgement Value
Malfunction Criteria
Threshold Value
Camshaft position sensor signal
Input exists
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