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DTC P0620: Notes

DTC P0620 (MZI-3.5) DETECTION CONDITION AND POSSIBLE CAUSES

DTC P0620 Generator control circuit
DETECTION CONDITION 
  • The PCM reads the generator and sends a DTC through the network when the generator indicates a concern.
POSSIBLE CAUSE 
  • Drive belt misadjustment
  • Generator malfunction
  • Open circuit between generator terminal LI and PCM terminal 2AG
  • Open circuit between generator terminal B and battery positive terminal
  • Short to ground between generator terminal LI and PCM terminal 2AG
  • Short to power supply between generator terminal LI and PCM terminal 2AG
  • Connector or terminal malfunction
  • PCM malfunction
G04969295Courtesy of MAZDA MOTORS CORP.