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DTC Description
 
 
DTC DETECTION LOGIC
DTC No.M.U.T.-III SE screen terms
(Trouble diagnosis content)
DTC detected condition
U278C-88ETHERNET PORT1 FAILURE
(Ethernet port1 failure)
Diagnosis conditionWhen electric motor switch is ON.
Signal (terminal)—
ThresholdLost ethernet communication with AV control unit
Diagnosis delay time7 seconds or more
 
 
POSSIBLE CAUSE
  • Ethernet harness
  • 8CH CAN gateway
  • AV control unit
 
 
FAIL-SAFE
8CH CAN gateway stops transmitting and receiving ethernet communication signals between ethernet communication circuit which cannot communicate.