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Home >> Mazda >> 2021 >> CX-9 Signature >> Repair and Diagnosis >> Engine Performance >> System >> On-Board Diagnostic - Engine Control System (5 Of 6) >> DTC P1380-00: Electric Variable Valve Timing Control Circuit Problem >> Notes
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DTC P1380-00: Electric Variable Valve Timing Control Circuit Problem: Notes

DTC P1380:00 DETECTION CONDITION AND POSSIBLE CAUSE

DTC P1380:00 Electric variable valve timing control circuit problem
DETECTION CONDITION
  • A malfunction is detected in the results of the on-board diagnostic test received from the electric variable valve timing driver.

    Diagnostic support note

  • This is a continuous monitor (CCM).
  • The check engine light does not illuminate.
  • FREEZE FRAME DATA is not available.
  • Snapshot data is available.
  • DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION
  • Stops activation of the electric variable valve timing driver.
POSSIBLE CAUSE
  • Electric variable valve timing motor/driver connectors or terminals malfunction
  • Short to ground in wiring harness between electric variable valve timing motor/driver terminal 1A and PCM terminal 1P
  • PCM connector or terminals malfunction
  • Short to power supply in wiring harness between electric variable valve timing motor/driver terminal 1A and PCM terminal 1P
  • Open circuit in wiring harness between electric variable valve timing motor/driver terminal 1A and PCM terminal 1P
  • Electric variable valve timing driver malfunction
  • Electric variable valve timing motor malfunction
  • PCM malfunction
G13697908Courtesy of MAZDA MOTORS CORP.
CAUTION:
  • Verify the malfunction symptom according to not only the PID value but also the symptom troubleshooting.