Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. Service manual — part 337
GD(H4DOTC)-100
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
BC:DTC P0201 INJECTOR #1
1. OUTLINE OF DIAGNOSIS
Based on the self-diagnostic result of the injector driving IC, judge the injector driving circuit as normal or ab-
normal.
Injector driving IC detects the status of “fuel remains injected” or “fuel is not injected” as a malfunction.
2. ENABLE CONDITIONS
3. GENERAL DRIVING CYCLE
Always perform the diagnosis continuously.
4. DIAGNOSTIC METHOD
• Abnormality Judgment
Judge as NG when the following conditions are established.
Time Needed for Diagnosis: 2500 ms
Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
• Normality Judgment
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
Battery voltage
≥ 10.9 V
Elapsed time after starting the engine
> 1 s
Engine speed
> 500 rpm
Injection time
≥ 1000 µs
and
< 120000000/engine speed – 1000 µs
Injection status
Not during fuel cut
and
Not during asynchronous injection controlled by crankshaft position
sensor
Judgment Value
Malfunction Criteria
Threshold Value
Injector driving IC information
Malfunction
Judgment Value
Malfunction Criteria
Threshold Value
Injector driving IC information
Normal
GD(H4DOTC)-101
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
BD:DTC P0202 INJECTOR #2
1. OUTLINE OF DIAGNOSIS
NOTE:
For the detection standard, refer to DTC P0201. <Ref. to GD(H4DOTC)-100, DTC P0201 INJECTOR #1, Di-
agnostic Trouble Code (DTC) Detecting Criteria.>
BE:DTC P0203 INJECTOR #3
1. OUTLINE OF DIAGNOSIS
NOTE:
For the detection standard, refer to DTC P0201. <Ref. to GD(H4DOTC)-100, DTC P0201 INJECTOR #1, Di-
agnostic Trouble Code (DTC) Detecting Criteria.>
BF:DTC P0204 INJECTOR #4
1. OUTLINE OF DIAGNOSIS
NOTE:
For the detection standard, refer to DTC P0201. <Ref. to GD(H4DOTC)-100, DTC P0201 INJECTOR #1, Di-
GD(H4DOTC)-102
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
BG:DTC P0222 THROTTLE/PEDAL POSITION SENSOR/SWITCH “B” CIRCUIT
LOW
1. OUTLINE OF DIAGNOSIS
Detect the open or short circuit of throttle position sensor 2.
Judge as NG if out of specification.
2. COMPONENT DESCRIPTION
3. ENABLE CONDITIONS
4. GENERAL DRIVING CYCLE
Always perform the diagnosis continuously.
(1)
Throttle position sensor 1 signal
(3)
Throttle position sensor
(4)
Engine control module (ECM)
(2)
Throttle position sensor 2 signal
Secondary Parameters
Enable Conditions
Ignition switch
ON
Battery voltage
≥ 6 V
EN-01859
(1)
(2)
(3)
(4)
GD(H4DOTC)-103
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 2 input voltage
≤ 1.15 V
Judgment Value
Malfunction Criteria
Threshold Value
Sensor 2 input voltage
> 1.15 V
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