Subaru Legacy IV (2008 year). Service manual — part 437
GD(H4DOTC)-198
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
DR:DTC P2022 INTAKE MANIFOLD RUNNER POSITION SENSOR / SWITCH
CIRCUIT HIGH (BANK 2)
1. OUTLINE OF DIAGNOSIS
Detect open or short circuit of tumble generator valve position sensor.
Judge as NG if out of specification.
2. COMPONENT DESCRIPTION
3. ENABLE CONDITION
4. GENERAL DRIVING CYCLE
Always perform the diagnosis continuously.
5. 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: 500 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: Less than 1 second
(1)
Rotor
(3)
Voltage (V)
(4)
Tumble generator valve opening (°)
(2)
Return
spring
Secondary Parameters
Enable Conditions
None
Judgement Value
Malfunction Criteria
Threshold Value
Output voltage
t 4.783 V
Judgement Value
Malfunction Criteria
Threshold Value
Output voltage
< 4.783 V
EN-01768
(3)
(4)
(1)
(2)
GD(H4DOTC)-199
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
DS: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(H4DOTC)-200
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
DT: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(H4DOTC)-201
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
DU: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(H4DOTC)-199, DTC P2088 INTAKE CAM-
SHAFT POSITION ACTUATOR CONTROL CIRCUIT LOW (BANK 1), Diagnostic Trouble Code (DTC) De-
tecting Criteria.>
DV: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(H4DOTC)-200, DTC P2089 INTAKE CAM-
SHAFT POSITION ACTUATOR CONTROL CIRCUIT HIGH (BANK 1), Diagnostic Trouble Code (DTC) De-
tecting Criteria.>
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