Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. Service manual — part 316
GD(H4DOTC)-16
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
5. DIAGNOSTIC METHOD
1) When the conditions during which the differences of exhaust AVCS target timing advance amount and ex-
haust AVCS actual timing advance amount is large continues for certain amount of time.
2) When the differences of target timing advance amount and actual timing advance amount is calculated
during exhaust AVCS control, and the difference per predetermined time is the specified value or larger.
• Abnormality Judgment
Judge as NG when the following conditions are established within the predetermined time.
Time Needed for Diagnosis:
30000 ms
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 following conditions are established within the predetermined time.
Time Needed for Diagnosis: 30000 ms
Judgment Value
Malfunction Criteria
Threshold Value
Σ(Target position – Actual position)
> 8000 °CA (Bank 1)
> 8000 °CA (Bank 2)
or
Σ(Target position – Actual position)
< –8000 °CA (Bank 1)
< –8000 °CA (Bank 2)
Judgment Value
Malfunction Criteria
Threshold Value
Σ(Target position – Actual position)
≤ 8000 °CA (Bank 1)
≤ 8000 °CA (Bank 2)
and
≥ –8000 °CA (Bank 1)
≥ –8000 °CA (Bank 2)
GD(H4DOTC)-17
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
K: DTC P0016 CRANKSHAFT POSITION - CAMSHAFT POSITION CORRELA-
TION (BANK1)
1. OUTLINE OF DIAGNOSIS
Detect the AVCS system malfunction.
Judge as NG when standard timing advance amount is far from learning angle.
2. COMPONENT DESCRIPTION
3. ENABLE CONDITIONS
4. GENERAL DRIVING CYCLE
Perform the diagnosis continuously after starting engine and while AVCS is not operating.
(1)
AVCS timing controller
(3)
Engine control module (ECM)
(5)
Oil pressure
(2)
Vane
(4)
Oil flow control solenoid valve
Secondary Parameters
Enable Conditions
Battery voltage
≥ 10.9 V
Engine speed (models without SI-DRIVE)
≥ 600 rpm
and
< 1000 rpm
Engine speed (models with SI-DRIVE)
≥ 600 rpm
and
< 975 rpm
Engine coolant temperature
≥ 70 °C (158 °F)
AVCS control
Not in operation
Target timing advance
0°CA
EN-01852
(3)
(4)
(1)
(5)
(2)
GD(H4DOTC)-18
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
5. DIAGNOSTIC METHOD
Judge as NG when the absolute value of the difference between cam signal input position and learning value
is out of specification.
• 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: 20000 ms
Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cy-
cles.
NOTE:
Initial standard learning value is the value of crank angle initially input at the production plant. And then it will
be updated every time normal judgment has been completed. Learning value will not be updated if NG judg-
ment occurs because timing belt or chain derails suddenly in process or because wrong assembly occurs
during servicing.
• 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
|Crankshaft position when camshaft position sensor signal is
input – Learning value|
> 8.5 °CA
Judgment Value
Malfunction Criteria
Threshold Value
|Crankshaft position when camshaft position sensor signal is
input – Learning value|
≤ 8.5 °CA
GD(H4DOTC)-19
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
L: DTC P0017 CRANK AND CAM TIMING B SYSTEM FAILURE (BANK 1)
1. OUTLINE OF DIAGNOSIS
Detect the exhaust AVCS system malfunction.
Judge as NG when standard timing advance amount is far from learning angle.
2. COMPONENT DESCRIPTION
3. ENABLE CONDITIONS
4. GENERAL DRIVING CYCLE
Perform the diagnosis continuously while the exhaust AVCS is not operating after warming up.
(1)
Exhaust AVCS timing controller
(3)
Engine control module (ECM)
(5)
Oil pressure
(2)
Vane
(4)
Oil flow control solenoid valve
Secondary Parameters
Enable Conditions
Battery voltage
≥ 10.9 V
Engine speed
≥ 600 rpm
and
< 975 rpm
Engine coolant temperature
≥ 70 °C (158 °F)
Exhaust AVCS control
Not in operation
Target timing advance
0°CA
EN-01852
(3)
(4)
(1)
(5)
(2)
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