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Circuit/System Testing

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  1. Disconnect the 3-phase cables from the SGCM. Refer to Generator Control Module 3-Phase Cable Assembly Replacement .
  2. Test each of the 3-phase cables individually for a short to ground.
    • If any circuit indicates a short to ground, disconnect the 3-phase cables from the MGU.
    • If the short to ground condition is longer present, replace the MGU.
  3. Test each of the 3-phase cables individually for a short to ground.
    • If any circuit does not test normal, replace the 3-phase cable assembly.
  4. If all circuits test normal, replace the SGCM.
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