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11.13 Accelerator Pedal Position Sensor Failure Failure codes: P2106, P2122, P2123, P2127, P2128, P2138 No. Operating steps Result Follow up steps 1 Put the ignition switch to “ON”.
Next step Yes Next step 2 Pull out accelerator pedal position sensor joint on harness, and then use a multimeter to check if an around 5V voltage signal is present between 3#, 6# pins of this joint and ground wire. No Check the circuit Yes Check the circuit 3 Pull out accelerator pedal position sensor joint on harness, and then use a multimeter to check if it is short or break circuit between 3#, 6# pins of this joint and 32#, 33# pins of ECU. No Next step Yes Check the circuit 4 Pull out accelerator pedal position sensor joint on harness, and then use a multimeter to check if it is short or break circuit between 2#, 5# pins of this joint and 36#, 35# pins of ECU. No Next step Yes Check the circuit 5 Pull out accelerator pedal position sensor joint on harness, and then use a multimeter to check if it is short or break circuit between 4#, 1# pins of this joint and 16#, 40# pins of ECU. No Next step Yes Next step 6 Use a diagnostic tester to read signal output of accelerator pedal position sensor, and then check if signal 1 increases as opening of accelerator pedal increases. No Replace the sensor assembly Yes Check other part 7 Use a diagnostic tester to read signal output of accelerator pedal position sensor, and then check if signal 2 increases as opening of accelerator pedal increases. No Replace the sensor assembly Note: This pedal is an integrated circuit device, which can not be processed through repair; therefore, during maintenance process, the service station can maintain it by means of part replacement and can not disassemble the sensor.
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