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Home >> Mazda >> 2021 >> CX-9 Signature >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> On-Board Diagnostic - Engine Control System (6 Of 6) >> DTC U0320-00: EPS Control Module Error >> Notes
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DTC U0320-00: EPS Control Module Error: Notes

DTC U0320:00 DETECTION CONDITION AND POSSIBLE CAUSE

DTC U0320:00 EPS control module error
DETECTION CONDITION
  • When any of the following conditions is met:
    • CAN communication line malfunction between EPS control module and PCM
      • EPS control module internal malfunction

    Diagnostic support note

  • This is a continuous monitor (other).
  • 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
  • Not applicable
POSSIBLE CAUSE
  • CAN drive error (EPS control module or PCM)
  • CAN communication line malfunction between EPS control module and PCM
    • EPS control module terminal 2B-Front body control module (FBCM) terminal 2K
    • EPS control module terminal 2D-Front body control module (FBCM) terminal 2I
    • Front body control module (FBCM) terminal 2P-PCM terminal 2AK
      • Front body control module (FBCM) terminal 2N-PCM terminal 2AL
  • EPS control module connector or terminals malfunction
  • PCM connector or terminals malfunction
  • EPS control module malfunction
  • PCM malfunction
G13697947Courtesy of MAZDA MOTORS CORP.