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DTC C1802 ACC ECU Fail
 
 
cautionBefore replacing the ECU, ensure that the communication circuit is normal.
 
 
OPERATION
The ASC-ECU communicates with the ACC-ECU via CAN bus lines.
 
 
 
DTC SET CONDITIONS
If the ASC-ECU receives an abnormal signal from the ACC-ECU with the ACC activated, it will set the DTC.
 
 
 
PROBABLE CAUSES
  • Wiring harness or connector failure of CAN bus line
  • Malfunction of ACC-ECU
 
 
 
 
DIAGNOSIS
1. Check scan tool (M.U.T.-IIISE) CAN bus diagnostics
2. Check whether the DTC is set again.