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Home >> Kia >> 2010 >> Rio Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (2 Of 2) >> DTC P0646: AC Clutch Relay Control Circuit Low >> General Information >> DTC Detecting Condition

General Information: DTC Detecting Condition

DTC DETECTING CONDITION CHART

Item Detecting Condition Possible Cause
DTC Strategy
  • Circuit continuity check, low
  • Poor connection
  • short to ground in control circuit
  • A/C relay
  • PCM
Enable Conditions    
Threshold Value
  • Short circuit to ground
Diagnostic Time
  • Continuous
MIL ON Condition
  • DTC only
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