Subaru Impreza 2005 General Description Manual page 255

Diagnostic Trouble Code (DTC) Detecting Criteria
DT: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 NG when out of the standard value.
2. COMPONENT DESCRIPTION
(1)
(1) Engine control module (ECM)
(2) Accelerator pedal position sensor 1 signal
(3) Accelerator pedal position sensor 2 signal
(4) Accelerator pedal position sensor
3. ENABLE CONDITION
Secondary Parameters
Ignition switch
4. GENERAL DRIVING CYCLE
Always perform the diagnosis continuously.
5. DIAGNOSTIC METHOD
Judge OK and clear the NG when the malfunction criteria below are completed.
Judgment Value
Malfunction Criteria
Sensor 1 input voltage
Time Needed for Diagnosis: 100 milliseconds
Malfunction Indicator Light Illumination: Illuminates as soon as malfunction occurs.
6. DTC CLEAR CONDITION
• When the OK idling cycle was completed 40 times in a row
• When "Clear Memory" was performed (Only with engine stopped)
(2)
(3)
Enable Conditions
ON
Threshold Value
≥ 0.308 V
GD(STi)-255
GENERAL DESCRIPTION
(4)
EN-01861