Subaru Legacy IV (2008 year). Service manual — part 221
GD(H4SO)-186
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
DM:DTC P2122 THROTTLE/PEDAL POSITION SENSOR/SWITCH “D” CIRCUIT
LOW INPUT
1. OUTLINE OF DIAGNOSIS
Detect the open or short circuit of accelerator pedal position sensor 1.
Judge as NG if out of specification.
2. COMPONENT DESCRIPTION
3. ENABLE CONDITION
4. GENERAL DRIVING CYCLE
Always perform the diagnosis continuously.
(1)
Engine control module (ECM)
(3)
Accelerator pedal position sensor
2 signal
(4)
Accelerator pedal position sensor
(2)
Accelerator pedal position sensor
1 signal
Secondary Parameters
Enable Conditions
Ignition switch
ON
Battery voltage
t 6 V
EN-01861
(2)
(3)
(4)
(1)
GD(H4SO)-187
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
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: 100 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: 100 ms
Judgement Value
Malfunction Criteria
Threshold Value
Sensor 1 input voltage
< 0.217 V
Judgement Value
Malfunction Criteria
Threshold Value
Sensor 1 input voltage
t 0.217 V
GD(H4SO)-188
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
DN:DTC P2123 THROTTLE/PEDAL POSITION SENSOR/SWITCH “D” CIRCUIT
HIGH INPUT
1. OUTLINE OF DIAGNOSIS
Detect the open or short circuit of accelerator pedal position sensor 1.
Judge as NG if out of specification.
2. COMPONENT DESCRIPTION
3. ENABLE CONDITION
4. GENERAL DRIVING CYCLE
Always perform the diagnosis continuously.
(1)
Engine control module (ECM)
(3)
Accelerator pedal position sensor
2 signal
(4)
Accelerator pedal position sensor
(2)
Accelerator pedal position sensor
1 signal
Secondary Parameters
Enable Conditions
Ignition switch
ON
Battery voltage
t 6 V
EN-01861
(2)
(3)
(4)
(1)
GD(H4SO)-189
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
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: 32 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: 32 ms
Judgement Value
Malfunction Criteria
Threshold Value
Sensor 1 input voltage
t 4.783 V
Judgement Value
Malfunction Criteria
Threshold Value
Sensor 1 input voltage
< 4.783 V
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