DYNAMIC RADAR CRUISE CONTROL SYSTEM > HOW TO PROCEED WITH TROUBLESHOOTING

for Preparation Click here


HINT:
  1. Use these procedures to troubleshoot the dynamic radar cruise control system.
  2. *: Use the intelligent tester.



1.VEHICLE BROUGHT TO WORKSHOP

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    2.INSPECT BATTERY VOLTAGE

      Standard:
      11 to 14 V

      If the voltage is below 11 V, recharge or replace the battery before proceeding.

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    3.CHECK COMMUNICATION FUNCTION OF MULTIPLEX COMMUNICATION SYSTEM (BEAN)*

    1. Use the intelligent tester to check if the Multiplex Communication System (MPX) is functioning normally.

      Result:
      Result
      		Proceed to
      MPX DTC is not output
      		A
      MPX DTC is output
      		B



    		B.
    Go to MULTIPLEX COMMUNICATION SYSTEM
    A


    4.CHECK COMMUNICATION FUNCTION OF CONTROLLER AREA NETWORK (CAN)*

    1. Use the intelligent tester to check for normal functioning of the CAN communication system.

      1. Perform bus check (communication malfunction DTC).

      2. Perform bus check (communication bus check).

        Result:
        Result
        		Proceed to
        DTC is not output
        		A
        DTC is output
        		B



    		B.
    Go to CAN COMMUNICATION SYSTEM
    A


    5. CHECK FOR DTC*
      Refer to DTC CHECK / CLEAR (Click here).

    1. Check for DTC and note any codes that are output.

    2. Delete the DTC.

    3. Recheck for DTC. Try to prompt the DTC by simulating the original activity that the DTC suggests.

      Result:
      Result
      		Proceed to
      DTC does not reoccur
      		A
      DTC reoccur
      		B



    		B.
    Go to step 8
    A


    6.PROBLEM SYMPTOMS TABLE
      Refer to the problem symptoms table (Click here).

      Result:

      Result
      		Proceed to
      Fault is not listed in problem symptoms table
      		A
      Fault is listed in problem symptoms table
      		B



    		B.
    Go to step 8
    A


    7.OVERALL ANALYSIS AND TROUBLESHOOTING*

    1. Terminals of ECU (Click here).

    2. Data List / Active Test (Click here).


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    8.ADJUST, REPAIR OR REPLACE

      NOTICE:
      1. When the distance control ECU is replaced with a new one, initialization must be performed (for LHD, Click here; for RHD, Click here).
      2. When the millimeter wave radar sensor is replaced with a new one, adjustment of the radar sensor beam axis must be performed (Click here).


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    9.CONFIRMATION TEST

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      END