Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. Service manual — part 327
GD(H4DOTC)-60
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: 24 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: 24 ms
Judgment Value
Malfunction Criteria
Threshold Value
Sensor 1 input voltage
≥ 4.858 V
Judgment Value
Malfunction Criteria
Threshold Value
Sensor 1 input voltage
< 4.858 V
GD(H4DOTC)-61
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
AJ:DTC P0125 INSUFFICIENT COOLANT TEMPERATURE FOR CLOSED LOOP
FUEL CONTROL
1. OUTLINE OF DIAGNOSIS
Detect the malfunction of engine coolant temperature output property.
Judge as NG when the engine coolant temperature does not rise in driving conditions where it should.
2. COMPONENT DESCRIPTION
3. ENABLE CONDITIONS
4. GENERAL DRIVING CYCLE
Perform the diagnosis only once after engine start.
(A)
Resistance value (kΩ)
(B)
Temperature °C (°F)
(1)
Connector
(2)
Thermistor element
Secondary Parameters
Enable Conditions
Engine speed
≥ Value from Map
Battery voltage
≥ 10.9 V
Engine coolant temperature at engine starting
< –15 °C (5 °F)
Map
Engine coolant temperature
°C (°F)
–40
(–40)
–30
(–22)
–20
(–4)
–10
(14)
0
(32)
10
(50)
20
(68)
30
(86)
Engine speed
rpm
500
500
500
500
500
500
500
500
Engine coolant temperature
°C (°F)
40
(104)
50
(122)
60
(140)
70
(158)
80
(176)
90
(194)
100
(212)
110
(230)
Engine speed
rpm
500
500
500
500
500
500
500
500
EN-02917
(A)
(2)
(1)
(B)
GD(H4DOTC)-62
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
5. DIAGNOSTIC METHOD
• Abnormality Judgment
Judge as NG if the criteria below are met.
Timer for diagnosis after engine start
64 ms + TWCNT ms (when at 64 ms)
TWCNT is shown in the following table.
Time Needed for Diagnosis: 120 or 300 seconds
Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cy-
cles.
• Normality Judgment
Judge as OK and clear the NG when the malfunction criteria below are met.
Time Needed for Diagnosis: Less than 1 second
Judgment Value
Malfunction Criteria
Threshold Value
Engine coolant temperature
< –15 °C (5 °F)
Timer for diagnosis after engine start
≥ 299968 ms
Vehicle speed km/h (MPH)
0 (0)
8 (5)
16 (9.9)
24
(14.9)
32
(19.9)
40
(24.9)
48
(29.8)
56
(34.8)
Lowest engine coolant
temperature
°C (°F)
–35 (–31)
0
0
0
0
0
0
0
0
–23.5 (–10.3)
0
0
0
0
0
0
0
0
–23.4 (–10.1)
96
96
96
96
96
96
96
96
–15 (5)
96
96
96
96
96
96
96
96
Judgment Value
Malfunction Criteria
Threshold Value
Engine coolant temperature
≥ –15 °C (5 °F)
GD(H4DOTC)-63
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
AK:DTC P0128 COOLANT THERMOSTAT (ENGINE COOLANT TEMPERATURE
BELOW THERMOSTAT REGULATING TEMPERATURE)
1. OUTLINE OF DIAGNOSIS
Detect malfunctions of the thermostat function.
Judge as NG when any one of the following conditions is established.
• When the actual engine coolant temperature does not reach the maximum temperature necessary to per-
form other OBDII diagnosis and Σ (Estimated engine coolant temperature – actual engine coolant tempera-
ture) exceeded the predetermined value. (Judgment 1)
• When the actual engine coolant temperature does not reach the range within –11°C (–19.8°F) from the
regulated temperature and Σ (Estimated engine coolant temperature – actual engine coolant temperature)
exceeded the predetermined value. (Judgment 2)
• When the difference between the estimated coolant temperature and the actual engine coolant tempera-
ture exceeds the predetermined value, and Σ (Estimated engine coolant temperature – actual engine coolant
temperature) exceeded the predetermined value. (Judgment 3)
2. COMPONENT DESCRIPTION
(1)
Valve
(4)
Piston
(7)
Stop ring
(2)
Spring
(5)
Guide
(8)
Wax element
(3)
Stopper
(6)
Rubber seal
(9)
Jiggle valve
EN-01692
(9)
(2)
(6)
(8)
(7)
(5)
(4)
(3)
(1)
(2)
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст