LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2013 >> Volt >> Repair and Diagnosis >> Engine Performance >> System >> Data Communication System - DTC B1000 To DTC U1846 >> Diagnostic Information and Procedures >> DTC U1821 >> 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 DTCs U1817, U1818, and U182D are not set.
    • If all of the DTCs are set together 

      Refer to DTC U0074 .

    • If all of the DTCs are not set together 
  4. Refer to Circuit/System Testing below.
scientia non olet · About LEMON Manuals