Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. 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)