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Home >> Chevrolet >> 2015 >> Volt >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Data Communication System - DTC B1000 To DTC U183E >> Diagnostic Information and Procedures >> DTC U1838: Lost Communication with Battery Charger Control Module >> Circuit/System Verification

Circuit/System Verification

  1. Vehicle in Service Mode.
  2. Verify that DTC U0073, U0074, U0077, U0078, U007A, P06E4, P1EB9, U1814, U2099, B1325, B1330, B1370, B1380, B1424, B1428, B1440, B1441, B1517, C0800, C0899, C12E1, P0560 or P0562 is not set.
    • If none of the DTCs are set 
  3. Verify that DTC U185A is not set.
    • If DTC U185A is not set 
  4. Refer to Circuit/System Testing .
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