PRE-CRASH SAFETY SYSTEM > HOW TO PROCEED WITH TROUBLESHOOTING

for Preparation Click here


HINT:
  1. Use the following procedure to troubleshoot the pre-crash system.
  2. The intelligent tester should be used in steps 3, 4 and 6.



1.VEHICLE BROUGHT TO WORKSHOP

    NEXT


    2.INSPECT AUXILIARY BATTERY VOLTAGE

    1. Measure the auxiliary battery voltage with the power switch off.

      2. Standard voltage:
      11 to 14 V

      If the voltage is below 11 V, recharge or replace the auxiliary battery before proceeding to the next step.


    		NG.
    CHARGE OR REPLACE AUXILIARY BATTERY
    OK


    3.CHECK CAN COMMUNICATION SYSTEM

    1. Use the intelligent tester to check if the CAN communication system is functioning normally (Click here).

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



    		B.
    GO TO CAN COMMUNICATION SYSTEM (Click here)
    A


    4.CHECK FOR DTC

    1. Check for DTCs (Click here).

      1. Record the DTCs.

    2. Clear the DTCs.

    3. Recheck for DTCs.

      1. Attempt to duplicate the malfunction and check if the DTCs are output again (Click here).

        Result:
        DTC Condition
        		Proceed to
        DTC is not output
        		A
        DTC is output
        		B
        No DTC is output, and malfunction cannot be duplicated or checked
        		C



    		B.
    GO TO DTC CHART (Click here)

    		C.
    GO TO SYMPTOM SIMULATION (Click here)
    A


    5.PROBLEM SYMPTOMS TABLE
      Refer to 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 7
    A


    6.OVERALL ANALYSIS AND TROUBLESHOOTING

    1. Data List / Active Test (Click here)

    2. Terminals of ECU (Click here)


    NEXT


    7.ADJUST, REPAIR OR REPLACE

      NEXT


      8.CONFIRMATION TEST

        NEXT

        END