Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. Service manual — part 344
GD(H4DOTC)-128
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
BT: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 CONDITIONS
4. GENERAL DRIVING CYCLE
Always perform the diagnosis continuously.
(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
None
EN-06283
(A)
(C)
10
30
30
(B)
#1BTDC10 CA
#3BTDC10 CA
#2BTDC10 CA
#4BTDC10 CA
#1BTDC10 CA
50 CA
50 CA
50 CA
50 CA
50 CA
50 CA
(1)
(2)
(3)
EN-05539
GD(H4DOTC)-129
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: 3000 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
Starter switch
ON
Crankshaft position sensor signal
Not detected
Battery voltage
≥ 8 V
Judgment Value
Malfunction Criteria
Threshold Value
Crankshaft position sensor signal
Input exists
Battery voltage
≥ 8 V
GD(H4DOTC)-130
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
BU:DTC P0336 CRANKSHAFT POSITION SENSOR “A” CIRCUIT RANGE/PER-
FORMANCE
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 CONDITIONS
(A)
Camshaft signal (RH)
(B)
Camshaft signal (LH)
(C)
Crankshaft signal
(D)
Number of crankshaft signals = 30
is normal
(1)
Crankshaft position sensor
(2)
Crank sprocket
(3)
Crankshaft half-turn
Secondary Parameters
Enable Conditions
Battery voltage
≥ 8 V
EN-06384
(A)
(C)
10
30
30
(B)
#1BTDC10 CA
#3BTDC10 CA
#2BTDC10 CA
#4BTDC10 CA
#1BTDC10 CA
50 CA
50 CA
50 CA
50 CA
50 CA
50 CA
(D)
(1)
(2)
(3)
EN-05539
GD(H4DOTC)-131
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
4. GENERAL DRIVING CYCLE
Always perform the diagnosis continuously.
5. DIAGNOSTIC METHOD
• Abnormality Judgment
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 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
Cylinder number identification
Completed
Amount of crank sensor signal during 1 rev.
Not = 30
Judgment Value
Malfunction Criteria
Threshold Value
Cylinder number identification
Completed
Amount of crank sensor signal during 1 rev.
= 30
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