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Home >> Mazda >> 2017 >> CX-5 Grand Select, AWD >> Repair and Diagnosis >> Engine Performance >> System >> On-Board Diagnostic - Engine Control System (3 Of 5) >> DTC P2122-00; App Sensor No. 1 Circuit Low Input >> Notes
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DTC P2122-00; App Sensor No. 1 Circuit Low Input: Notes

DTC DETECTION DESCRIPTION

DTC P2122:00 APP sensor No. 1 circuit low input
DETECTION CONDITION
  • The PCM monitors the input voltage from APP sensor No. 1. If the input voltage at the PCM terminal 2AN is less than 0.1 V, the PCM determines that the APP sensor No. 1 circuit input voltage is low.

    Diagnostic support note

  • This is a continuous monitor (CCM).
  • The check engine light illuminates if the PCM detects the above malfunction condition during the first drive cycle.
  • FREEZE FRAME DATA/Snapshot data is available.
  • DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION
  • Regulates the upper limit of the APP sensor output.
POSSIBLE CAUSE
  • APP sensor connector or terminals malfunction
  • Short to ground in wiring harness between the following terminals:
    • APP sensor terminal A-PCM terminal 2AR
    • APP sensor terminal B-PCM terminal 2AN
  • PCM connector or terminals malfunction
  • APP sensor No. 1 signal circuit and ground circuit are shorted to each other
  • Open circuit in wiring harness between the following terminals:
    • APP sensor terminal A-PCM terminal 2AR
    • APP sensor terminal B-PCM terminal 2AN
  • APP sensor No. 1 malfunction
  • PCM malfunction
Fig 1: APP Sensor No 1 Circuit Diagram
G11430107Courtesy of MAZDA MOTORS CORP.
CAUTION:
  • Verify the malfunction symptom according to not only the PID value but also the symptom troubleshooting.
PARTS DESCRIPTION

Item Definition Unit Condition/Specification
APP1 Accelerator pedal opening angle (absolute value) input from APP sensor No. 1 %
  • Accelerator pedal released: Approx. 15%
  • Accelerator pedal fully depressed: Approx. 90.58%
  APP sensor No. 1 voltage V
  • Accelerator pedal released: Approx. 0.75 V
  • Accelerator pedal fully depressed: Approx. 4.52 V
APP2 Accelerator pedal opening angle (absolute value) input from APP sensor No. 2 %
  • Accelerator pedal released: Approx. 7.45%
  • Accelerator pedal fully depressed: Approx. 45.49%
  APP sensor No. 2 voltage V
  • Accelerator pedal released: Approx. 0.38 V
  • Accelerator pedal fully depressed: Approx. 2.26 V
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