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DTC 60: Communication Line Error

  1. Clear the DTCs with the HDS.
  2. Turn the ignition switch ON (II).
  3. Turn the adaptive cruise control (ACC) switch ON.
  4. Watch the ACC indicator.

    Does the ACC indicator stay off? 

    YES  - Intermittent failure, the system is OK at this time. Check for loose or poor connections.

    NO  - Go to step 5.

  5. Check for DTCs with the HDS.

    Is DTC 60 indicated? 

    YES  - Go to step 6.

    NO  - Troubleshoot the indicated DTC(s). If there are no DTCs, the system is OK at this time.

  6. Turn the ignition switch OFF.
  7. Disconnect the 20P connector from the ACC unit.
  8. Check resistance between the ACC unit 20P connector No. 10 and No. 20 terminals.
    Fig 1: Checking Resistance Between ACC Unit 20P Connector No. 10 And No. 20 Terminals
    G05498283Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there about 60 0, at room temperature? 

    YES  - The F-CAN line is OK at this time, check for loose or poor connections. If OK, replace the ACC unit (see DISTANCE SWITCH TEST  ).

    NO  - Repair an open in the wire between the ACC unit and the branch of the communication line (CANL line or CANH line.)