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Circuit/System Verification

  1. Determine the device that is not communicating. Refer to Control Module U Code List .
  2. Verify that DTC U0073, U2100, U0074, U0075, U0077, U0078, U1814, U2099, B1325, B1330, B1370, B1380, B1424, B1440, B1441, B1517, C0800, C0899, C12E1, P0560 or P0562 is not set.
  3. Refer to Circuit/System Testing.