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Home >> Chevrolet >> 2011 >> Volt >> Repair and Diagnosis >> Engine Performance >> System >> Data Communications System >> Diagnostic Information and Procedures >> DTC U2603 >> Circuit/System Verification

Circuit/System Verification

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  1. Verify that DTC U2401 is not set.
  2. Ignition ON, observe the scan tool Hybrid/EV Battery 1-96 parameters. Verify that each reading is between 3.0-4.1 V, and all readings are within 0.1 V of each other.
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