Circuit/System Verification

Determine the device that is not communicating. Refer to Control Module U Code List .
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.
- If any of the DTCs are set
  Refer to Diagnostic Trouble Code (DTC) List - Vehicle .
- If none of the DTCs are set
Refer to Circuit/System Testing.