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Home >> GMC >> 2023 >> Hummer EV Edition 1 >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Electric Converters and Controllers >> Plug-In Charging System >> Diagnostic Information and Procedures >> DTC P3002-P3004 >> Circuit/System Verification

Circuit/System Verification

  1. Vehicle Power Mode State: Service/Run/On 
  2. Verify no other DTC relating to the Battery Disconnect Module are set.
    • Go to next step: If none of the DTCs are set 
  3. Verify DTC P3002, P3003, P3004 is not set.
    • If any of the DTCs are set 

      The A28 Hybrid/Electric Vehicle Battery Disconnect Relay which is an internal component of the A4 Hybrid/Electric Vehicle Battery Pack is causing the fault. Replace the A4 Hybrid/Electric Vehicle Battery Pack.

    • Go to next step: If none of the DTCs are set 
  4. All OK.
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