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Home >> Chevrolet >> 2009 >> Malibu LS, 2.4 B >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Hybrid Engine Control System) >> Diagnostic Information and Procedures >> DTC P1A62 >> Circuit/System Testing

Circuit/System Testing

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  1. Disconnect harness connector X2 from the SGCM. Refer to Generator Control Module Replacement .
  2. Test for 5-100 ohms between terminals 9 and 12.
    • If within the specified range, replace the SGCM.
  3. Disconnect the X1 connector at the MGU. Refer to Generator with Starter Replacement 
  4. Test for less than 1 ohm between SGCM connector harness terminal 12 and the MGU connector harness terminal A.
    • If greater than the specified range, test the circuit for open/high resistance.
  5. Test for less than 1 ohm between SGCM connector harness terminal 9 and the MGU X1 connector harness terminal C.
    • If greater than the specified range, test the circuit for open/high resistance.
  6. If both circuits test normal, replace the MGU.
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