Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. Service manual — part 351
GD(H4DOTC)-156
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: 328 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 continuous time while the following conditions are established is more
than the predetermined time.
Time Needed for Diagnosis: 262 ms
Judgment Value
Malfunction Criteria
Threshold Value
|ELCM pressure sensor output value – intake manifold pressure
(absolute pressure) when ignition switch is ON|
> 6531.7 Pa (49 mmHg, 1.9 inHg)
Judgment Value
Malfunction Criteria
Threshold Value
|ELCM pressure sensor output value – intake manifold pressure
(absolute pressure) when ignition switch is ON|
≤ 6531.7 Pa (49 mmHg, 1.9 inHg)
GD(H4DOTC)-157
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
CQ:DTC P0452 EVAPORATIVE EMISSION SYSTEM PRESSURE SENSOR/
SWITCH LOW
1. OUTLINE OF DIAGNOSIS
Detect the open or short circuit of the ELCM pressure sensor.
Judge as NG if out of specification.
2. COMPONENT DESCRIPTION
3. ENABLE CONDITIONS
4. GENERAL DRIVING CYCLE
Always perform the diagnosis continuously.
(1)
ELCM
(5)
Vacuum pump
(9)
Fuel tank
(2)
Switching valve
(6)
Drain filter
(10) Canister
(3)
Reference orifice (0.02 inch ori-
fice)
(7)
Purge control solenoid valve
(4)
Pressure sensor
(8)
Intake manifold
Secondary Parameters
Enable Conditions
None
EN-08957
M
(10)
(8)
(6)
(5)
(2)
(3)
(4)
(1)
(7)
(9)
GD(H4DOTC)-158
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: 1000 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
Output voltage
< 0.973 V
Judgment Value
Malfunction Criteria
Threshold Value
Output voltage
≥ 0.973 V
GD(H4DOTC)-159
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
CR:DTC P0453 EVAPORATIVE EMISSION SYSTEM PRESSURE SENSOR/
SWITCH HIGH
1. OUTLINE OF DIAGNOSIS
Detect the open or short circuit of the ELCM pressure sensor.
Judge as NG if out of specification.
2. COMPONENT DESCRIPTION
3. ENABLE CONDITIONS
4. GENERAL DRIVING CYCLE
Always perform the diagnosis continuously.
(1)
ELCM
(5)
Vacuum pump
(9)
Fuel tank
(2)
Switching valve
(6)
Drain filter
(10) Canister
(3)
Reference orifice (0.02 inch ori-
fice)
(7)
Purge control solenoid valve
(4)
Pressure sensor
(8)
Intake manifold
Secondary Parameters
Enable Conditions
None
EN-08957
M
(10)
(8)
(6)
(5)
(2)
(3)
(4)
(1)
(7)
(9)
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст