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Home >> Chevrolet >> 2005 >> Impala SS >> Repair and Diagnosis >> External Pages >> Different car >> Section 945 (Hybrid Engine Control System) >> Diagnostic Information and Procedures >> DTC P1AB1 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2008 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.
  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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