Subaru Legacy IV (2008 year). Service manual — part 641
GD(H6DO)-184
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
EB:DTC P2088 INTAKE CAMSHAFT POSITION ACTUATOR CONTROL CIRCUIT
LOW (BANK 1)
1. OUTLINE OF DIAGNOSIS
Detect open or short circuit of the oil flow control solenoid valve.
Judge as NG when the current is small even though the duty signal is large.
2. ENABLE CONDITION
3. GENERAL DRIVING CYCLE
Always perform the diagnosis continuously.
4. 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: 2000 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: 2000 ms
Secondary Parameters
Enable Conditions
None
Judgement Value
Malfunction criteria
Threshold value
Battery voltage
t 10.9 V
Oil flow control solenoid valve control
duty
t 99.61 %
Oil control solenoid valve control present
current
< 0.306 A
Judgement Value
Malfunction criteria
Threshold value
Battery voltage
t 10.9 V
Target current value of the oil flow control
solenoid valve
t 0.14 A
|Target current value of the oil flow con-
trol solenoid valve – Oil flow control sole-
noid valve control current value|
< 0.08 A
GD(H6DO)-185
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
EC:DTC P2089 INTAKE CAMSHAFT POSITION ACTUATOR CONTROL CIRCUIT
HIGH (BANK 1)
1. OUTLINE OF DIAGNOSIS
Detect open or short circuit of oil flow control solenoid valve.
Judge as NG when the current is large even though the duty signal is small.
2. ENABLE CONDITION
3. GENERAL DRIVING CYCLE
Always perform the diagnosis continuously.
4. 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: 2000 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: 2000 ms
Secondary Parameters
Enable Conditions
None
Judgement Value
Malfunction criteria
Threshold value
Battery voltage
t 10.9 V
Oil flow control solenoid valve control
duty
< 0.39 %
Oil control solenoid valve control present
current
t 0.306 A
Judgement Value
Malfunction criteria
Threshold value
Battery voltage
t 10.9 V
|Target current value of the oil flow con-
trol solenoid valve – Oil flow control sole-
noid valve control current value|
< 0.08 A
GD(H6DO)-186
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
ED:DTC P2092 INTAKE CAMSHAFT POSITION ACTUATOR CONTROL CIRCUIT
LOW (BANK 2)
1. OUTLINE OF DIAGNOSIS
NOTE:
For the detection standard, refer to DTC P2088. <Ref. to GD(H6DO)-184, DTC P2088 INTAKE CAMSHAFT
POSITION ACTUATOR CONTROL CIRCUIT LOW (BANK 1), Diagnostic Trouble Code (DTC) Detecting
Criteria.>
EE:DTC P2093 INTAKE CAMSHAFT POSITION ACTUATOR CONTROL CIRCUIT
HIGH (BANK 2)
1. OUTLINE OF DIAGNOSIS
NOTE:
For the detection standard, refer to DTC P2089. <Ref. to GD(H6DO)-185, DTC P2089 INTAKE CAMSHAFT
POSITION ACTUATOR CONTROL CIRCUIT HIGH (BANK 1), Diagnostic Trouble Code (DTC) Detecting
Criteria.>
GD(H6DO)-187
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
EF:DTC P2096 POST CATALYST FUEL TRIM SYSTEM TOO LEAN (BANK 1)
1. OUTLINE OF DIAGNOSIS
Detect the malfunction of fuel system from the size of the sub feedback learning value.
Control the sub feedback learning and judge as NG when the learning value is in the lean zone.
2. COMPONENT DESCRIPTION
3. ENABLE CONDITION
4. GENERAL DRIVING CYCLE
Perform the diagnosis continuously when the vehicle is idling or running at a constant speed of 80 km/h (50
MPH) or more.
(A)
Electromotive force
(C)
Rich
(E)
Theoretical air fuel ratio
(B)
Air fuel ratio
(D)
Lean
(F)
Comparative voltage
(1)
Atmosphere
(2)
Exhaust gas
(3)
Electromotive force
Secondary Parameters
Enable Conditions
Conditions for carrying out the sub feed-
back learning
Completed
Continuous time when all conditions are
established.
t 1 s
EN-01696
(3)
V
(1)
(2)
(2)
(E)
(F)
(C)
(B)
(D)
(A)
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