Subaru 2009 IMPREZA, Руководство по обслуживанию

Страница: 1775 / 3619

GD(H4DOTC)-187
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
DD:DTC P1602 CONTROL MODULE PROGRAMMING ERROR
1. OUTLINE OF DIAGNOSIS
Detect malfunctions of the catalyst advanced idling retard angle control.
Judge as NG when ECM is not controlling the angle properly during catalyst advanced idling retard angle
control.
Judge as NG if there is exhaust gas temperature diagnosis and idle speed diagnosis and if either of them is NG.
• Exhaust gas temperature diagnosis
Judge as NG when the estimated exhausted gas temperature in 14 seconds after the cold start is below the
specified value.
• Idle speed diagnosis
Judge as NG when actual engine speed is not close to target engine speed after terminating the retard angle control.
2. ENABLE CONDITIONS
3. GENERAL DRIVING CYCLE
Perform the diagnosis at cold start.
4. DIAGNOSTIC METHOD
• Exhaust gas temperature diagnosis
Abnormality Judgement
Calculate the estimated exhaust gas temperature when the diagnostic enable condition is established. Judge
as NG when the following conditions are established after engine starting within the predetermined time.
Time Needed for Diagnosis: 14 seconds
Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
Normality Judgement
Judge as OK and clear the NG if the following conditions are established.
Time Needed for Diagnosis: Less than 1 second
Secondary Parameters Enable Conditions
Atmospheric pressure
t
75 kPa (563 mmHg,
22.2 inHg)
Battery voltage
t
10.9 V
Cold start diagnosis Incomplete
Vehicle speed < 3 km/h (1.9 MPH)
Misfire in 200 engine revs. < 5
Time after starting = 14 seconds
Judgement Value
Malfunction Criteria Threshold Value
Estimated exhaust gas temperature < Value from Map
Map
Coolant tempera-
ture after starting
the engine
–40 °C
(–40 °F)
–30 °C
(–22 °F)
–20 °C
(–4 °F) –10 °C
(14 °F) 0 °C
(32 °F)
10 °C
(50 °F)
20 °C
(68 °F)
30 °C
(86 °F)
40 °C
(104 °F)
45 °C
(113 °F)
Threshold value
(AT model) 200 °C
(392 °F)
200 °C
(392 °F)
200 °C
(392 °F)
200 °C
(392 °F)
95 °C
(203 °F)
95 °C
(203 °F)
89 °C
(192.2 °F)
83 °C
(181.4 °F)
79 °C
(174.2 °F)
79 °C
(174.2 °F)
Threshold value
(except for WRX-SS
model)
200 °C
(392 °F)
200 °C
(392 °F)
200 °C
(392 °F)
200 °C
(392 °F)
92 °C
(197.6 °F)
89 °C
(192.2 °F)
86 °C
(186.8 °F)
82 °C
(179.6 °F)
78 °C
(172.4 °F)
78 °C
(172.4 °F)
Threshold value
(WRX-S model) 200 °C
(392 °F)
200 °C
(392 °F)
200 °C
(392 °F)
200 °C
(392 °F)
80 °C
(176 °F)
83 °C
(181.4 °F)
81 °C
(177.8 °F)
75 °C
(167 °F)
74 °C
(165.2 °F)
71 °C
(159.8 °F)
Judgement Value
Malfunction Criteria Threshold Value
Estimated exhaust gas temperature
t
Value from Map