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B1987 Sub Micom Failed: DTC Detecting Condition

DTC DETECTING CONDITION CHART

Item Detecting Condition Possible Cause
DTC Strategy
  • NEC MCU Communication Check
  • Short to ground/power or open in communication circuit of NEC MCU inside PDM
  • Replace PDM (In case It is unable to verify the cause.)
Enable Conditions
  • PDM power on
Threshold Value
  • Communication error
Diagnostic Time
  • Immediately
DTC Erasing Time
  • DTC is erased immediately after trouble fixed.
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