DTC P2127 Throttle/Pedal Position Sensor/Switch "E" Circuit Low Input: Wiring Diagram
DIAGNOSIS PROCEDURE
| Step | Check | Yes | No |
|---|---|---|---|
1 CHECK ACCELERATOR PEDAL POSITION SENSOR OUTPUT.
NOTE:
For detailed operation procedures, refer to "READ CURRENT DATA FOR ENGINE". <Ref. to
SUBARU SELECT MONITOR . >
|
Is the voltage 0.4 V or more? | Go to step 2 . | Go to step 3 . |
| 2 CHECK POOR CONTACT. Check poor contact of connector between ECM and accelerator pedal position sensor. |
Is there poor contact? | Repair the poor contact. | Temporary poor contact occurred, but it is normal at present. |
3 CHECK HARNESS BETWEEN ECM AND ACCELERATOR PEDAL POSITION SENSOR.
|
Is the resistance less than 1 Ω? | Go to step 4 . | Repair the open circuit of harness connector. |
| 4 CHECK HARNESS BETWEEN ECM AND ACCELERATOR PEDAL POSITION SENSOR. Measure the resistance between ECM and chassis ground. Connector & terminal (B135) No. 22 - Chassis ground: (B135) No. 31 - Chassis ground: |
Is the resistance 1 MΩ or more? | Go to step 5 . | Repair the ground short circuit of harness. |
5 CHECK HARNESS BETWEEN ECM AND ACCELERATOR PEDAL POSITION SENSOR.
|
Is the resistance less than 5 Ω? | Go to step 6 . | Repair poor contact in ECM connector. Replace the ECM if defective. <Ref. to ENGINE CONTROL MODULE (ECM) . > |
6 CHECK POWER SUPPLY OF ACCELERATOR PEDAL POSITION SENSOR.
|
Is the voltage 4.5 - 5.5 V? | Replace the accelerator pedal position sensor. <Ref. to ACCELERATOR PEDAL . > | Repair poor contact in ECM connector. Replace the ECM if defective. <Ref. to ENGINE CONTROL MODULE (ECM) . > |