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Home >> Chevrolet >> 2015 >> Volt >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Electric Converters and Controllers >> Hybrid/EV Control System >> Diagnostic Information and Procedures >> DTC P1ABC or P1ABD: 14V Power Module Hybrid/EV Battery System >> Circuit/System Verification

Circuit/System Verification

  1. Perform the Battery Inspection/Test .
    NOTE: To accurately diagnose the charging system, the C1 Battery must be fully charged and capable of passing the Battery Inspection/Test.
  2. Verify DTC P1ABC or P1ABD is not set.
    • If any of the DTCs are set 
    1. Vehicle OFF, disconnect the drive motor battery charger cable from the X98 Hybrid/EV Battery Charger Receptacle.
    2. Measure and record the C1 Battery voltage at the C1 Battery terminals.
    3. Vehicle ON, accessories OFF.
    4. Measure and record the C1 Battery voltage at the C1 Battery terminals. The voltage should be at least 1 V greater than the voltage measured previously but less than 15 V.
      • If within the specified range
    5. Program the K1 14V Power Module.
    6. Verify the DTC does not set.
      • If the DTC sets, replace the K1 14V Power Module.
      • If the DTC does not set
    7. All OK.
    • If none of the DTCs are set 
  3. All OK.
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