DTC P2123: Throttle/Pedal Position Sensor/Switch "D" Circuit High Input

OUTLINE OF DIAGNOSIS
Detect the open or short circuit of accelerator pedal position sensor 1.

Judge NG when out of the standard value.
COMPONENT DESCRIPTION

Fig 1: DTC P2123 - Throttle/Pedal Position Sensor/Switch "D" Circuit High Input - Component Description
Courtesy of SUBARU OF AMERICA, INC.

ENABLE CONDITION

ENABLE CONDITION CHART

Secondary Parameters	Enable Conditions
Ignition switch	ON

DIAGNOSTIC METHOD

Judge OK and clear the NG when the malfunction criteria below are completed.

Judgment Value

JUDGMENT VALUE CHART

Malfunction Criteria	Threshold Value
Sensor 1 input voltage	"GREATER THAN EQUAL TO" 4.856 V

Time Needed for Diagnosis: 100 milliseconds

Malfunction Indicator Light Illumination: Illuminates as soon as malfunction occurs.

DTC CLEAR CONDITION
- When the OK idling cycle was completed 40 times in a row
- When "Clear Memory" was performed (Only engine stop)
MALFUNCTION INDICATOR LIGHT CLEAR CONDITION
- When the OK driving cycle was completed 3 times in a row
- When "Clear Memory" was performed (Only engine stop)
FAIL SAFE
- Single malfunction: Control with normal sensor
- Multi malfunction: Fix the throttle opening angle to 6°.
ECM OPERATION AT DTC SETTING
Memorize the freeze frame data. (For test mode $02)