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DTC U0315-00: DSC HU/Cm Error: Notes

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DTC U0315:00 DSC HU/CM error
DETECTION CONDITION 
  • When any of the following conditions is met:
    • CAN communication line malfunction between DSC HU/CM and PCM
    • DSC HU/CM internal malfunction

    Diagnostic support note 

  • This is a continuous monitor (other).
  • The check engine light does not illuminate.
  • FREEZE FRAME DATA (Mode 2)/Snapshot data is not available.
  • DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION  Not applicable
POSSIBLE CAUSE 
  • CAN drive error (DSC HU/CM or PCM)
  • CAN communication line malfunction between DSC HU/CM and PCM
    • DSC HU/CM terminal AF-PCM terminal 2AK
    • DSC HU/CM terminal AC-PCM terminal 2AL
  • DSC HU/CM connector or terminals malfunction
  • PCM connector or terminals malfunction
  • DSC HU/CM malfunction
  • PCM malfunction
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