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Home >> Mazda >> 2017 >> 6 Touring, Automatic Trans >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> On-Board Diagnostic (2 Of 4) (SKYACTIVE-G 2.5) >> DTC P0340-00; Intake CMP Sensor Circuit Problem >> Notes
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DTC P0340-00; Intake CMP Sensor Circuit Problem: Notes

DETECTION CONDITION & POSSIBLE CAUSE

DTC P0340:00 Intake CMP sensor circuit problem
DETECTION CONDITION
  • The intake CMP sensor input signal pattern, received while the crankshaft rotates 24 times, is incorrect.

    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 (Mode 2)/Snapshot data is available.
  • DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION
  • Stops fuel injection.
  • Stops ignition.
  • Sets the electric variable valve timing control to the maximum cam retard mode.
  • Inhibits traction control.
POSSIBLE CAUSE
  • Intake CMP sensor connector or terminals malfunction
  • Short to ground or open circuit in intake CMP sensor power supply circuit
    • Short to ground in wiring harness between ENGINE1 15 A fuse and intake CMP sensor terminal C
    • ENGINE1 15 A fuse malfunction
      • Open circuit in wiring harness between main relay terminal C and intake CMP sensor terminal C
  • Short to ground in wiring harness between intake CMP sensor terminal A and PCM terminal 1Y
  • PCM connector or terminals malfunction
  • Short to power supply in wiring harness between intake CMP sensor terminal A and PCM terminal 1Y
  • Intake CMP sensor signal circuit and ground circuit are shorted to each other
  • Open circuit in wiring harness between the following terminals:
    • Intake CMP sensor terminal A-PCM terminal 1Y
      • Intake CMP sensor terminal B-PCM terminal 1AC
  • Intake CMP sensor malfunction
    • Intake CMP sensor is dirty
    • Intake CMP sensor pulse wheel malfunction
      • Damage to the detection area of the intake CMP sensor
  • CKP sensor connector or terminals malfunction
  • Electric variable valve timing mechanism not installed correctly
    • Loose timing chain or improper valve timing
    • Loose camshaft sprocket lock bolt
      • Loose crankshaft pulley lock bolt
  • PCM malfunction
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