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DTC Detecting Condition and Trouble Area

WARNING: This page is about a different car, the 2010 Suzuki Kizashi. However, it is still accessible from the selected car via links, so may be relevant.
DTC DETECTING CONDITION CHART

DTC detecting condition Trouble area
DTC P0620: Generator Control Circuit 
This DTC is detected if any one of the following conditions is met.
  • Duty control signal of generator control is maximum (100%) for 10 sec. even if battery voltage is higher than 13.8 V.
  • Duty control signal of generator control is minimum (0%) for 10 sec. even if battery voltage is lower than 12.6 V.

(2 D/C detection logic but MIL does not light up)
  • Generator and/or its circuit
  • ECM
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