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P0626 - Generator Field Terminal Circuit High

P0626 - GENERATOR FIELD TERMINAL CIRCUIT HIGH

Description:  The powertrain control module (PCM) monitors generator load from the generator/regulator in the form of frequency. The concern indicates the input is higher than the load should be in normal operation. The load input could be high when a battery short to ground exists.
Possible Causes: 
  • GENLI circuit short to voltage
  • GENRC circuit short to voltage
  • B+ open prior to start-up
  • Open GENRC prior to start-up
  • Open ILC prior to start-up
Diagnostic Aids:  Verify the battery voltage is 14.5 volts. Verify the generator/regulator has the correct part number.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All   refer to PINPOINT TEST HY .
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