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Home >> Mazda >> 2016 >> MX-5 Miata Club, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> System >> On-Board Diagnostic - Engine Control System (2 Of 4) >> DTC P0340-00: Intake CMP Sensor Circuit Problem >> Notes

DTC P0340-00: Intake CMP Sensor Circuit Problem: Notes

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/Snapshot data is available.
  • DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION 
  • Set the electric variable valve timing control to the maximum cam retard mode.
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 10 A fuse and intake CMP sensor terminal C
    • ENGINE1 10 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
  • Loose timing chain or improper valve timing
  • PCM malfunction
G10951281