Subaru Crosstrek Service Manual: Dtc p2127 throttle/pedal position sensor/switch "e" circuit low
ENGINE (DIAGNOSTICS)(H4DO) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P2127 THROTTLE/PEDAL POSITION SENSOR/SWITCH "E" CIRCUIT LOW
DTC detecting condition:
Immediately at fault recognition
Trouble symptom:
• Improper idling
• Poor driving performance
CAUTION:
After servicing or replacing faulty parts, perform Clear Memory Mode Clear Memory Mode > OPERATION">
, and Inspection Mode Inspection Mode > PROCEDURE">.
Wiring diagram:
Engine electrical system Engine Electrical System">
| STEP | CHECK | YES | NO |
1.CHECK HARNESS BETWEEN ECM AND ACCELERATOR PEDAL POSITION SENSOR CONNECTOR.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from ECM.
3) Disconnect the connector from the accelerator pedal position sensor.
4) Measure the resistance between ECM connector and chassis ground.
Connector & terminal
(B135) No. 22 — Chassis ground:
(B135) No. 31 — Chassis ground:
Is the resistance 1 M? or more?
Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC P2127 THROTTLE/PEDAL POSITION SENSOR/SWITCH "E" CIRCUIT LOW">Go to Step 2.
Repair the short circuit to ground in harness between ECM connector and accelerator pedal position sensor connector.
2.CHECK SHORT CIRCUIT INSIDE THE ECM.
1) Connect the connector to ECM.
2) Measure the resistance between accelerator pedal position sensor connector and chassis ground.
Connector & terminal
(B315) No. 3 — Chassis ground:
Is the resistance 1 M? or more?
Replace the accelerator pedal. Accelerator Pedal">
Repair the short circuit to ground in harness between ECM connector and accelerator pedal position sensor connector. Replace the ECM if defective. Engine Control Module (ECM)">
1. OUTLINE OF DIAGNOSIS
Detect the open or short circuit of accelerator pedal position sensor 2.
Judge as NG if out of specification.
2. COMPONENT DESCRIPTION
(1) | Engine control module (ECM) | (3) | Accelerator pedal position sensor 2 signal | (4) | Accelerator pedal position sensor |
(2) | Accelerator pedal position sensor 1 signal |
3. EXECUTION CONDITION
Secondary Parameters | Execution condition |
Battery voltage | ≥ 6 V |
4. GENERAL DRIVING CYCLE
Always perform the diagnosis continuously.
5. DIAGNOSTIC METHOD
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.
Malfunction Criteria | Threshold Value |
Sensor 2 input voltage | < 0.298 V |
Time Needed for Diagnosis: 100 ms
Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
Dtc p2123 throttle/pedal position sensor/switch "d" circuit high
ENGINE (DIAGNOSTICS)(H4DO) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC P2123 THROTTLE/PEDAL POSITION SENSOR/SWITCH "D" CIRCUIT HIGHDTC detecting condition:Immediately at ...
Dtc p2128 throttle/pedal position sensor/switch "e" circuit high
ENGINE (DIAGNOSTICS)(H4DO) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC P2128 THROTTLE/PEDAL POSITION SENSOR/SWITCH "E" CIRCUIT HIGHDTC detecting condition:Immediately at ...
Other materials:
Removal
GLASS/WINDOWS/MIRRORS > Outer Mirror AssemblyREMOVALRefer to “DISASSEMBLY” for removal procedures of scalp cap and mirror face. Outer Mirror Assembly > DISASSEMBLY">1. Disconnect the ground cable from battery and wait for at least 60 seconds before starting work. NOTE&quo ...
Installation
FUEL INJECTION (FUEL SYSTEMS)(H4DO) > Engine Wiring HarnessINSTALLATION1. Route the engine wiring harness around the engine and connect connectors.• Structural diagram 1(1)Tumble generator valve actuator RH(2)Be careful of pinching when installing the intake manifold.(3)Engine harness conne ...
Recommended tire inflation pressure
Recommended cold tire inflation
pressure
For recommended cold tire inflation
pressure for your vehicle's tires,
refer to "Tires" F12-8.
Vehicle placard
The vehicle placard is attached to
the driver's side door pillar.
Example:
The vehicle placard shows original
tire size, recommended ...
