PRE-CRASH SAFETY SYSTEM INITIALIZATION


  1. Precautions for Seat Belt Control ECU Replacement

    The seat belt control ECU operates the pre-crash safety system based on the stored data that informs that the vehicle is LHD or RHD model. LHD or RHD refers to the seating position of the driver, not which side of the road the vehicle is driven on.

    Therefore, when replacing the seat belt control ECU, it is necessary to store the information about whether the vehicle is a LHD or RHD model. This can be performed by following these steps:


    1. Turn the engine switch on (IG).

    2. The PCS warning light comes on for at least 3 seconds after turning the engine switch on (IG). Make sure that the warning light does not remain on.

    3. At this time, the seat belt control ECU receives vehicle configuration (LHD/RHD) information from the gateway ECU and stores it in memory.


      1. Connect the intelligent tester to the DLC3.

      2. Turn the engine switch on (IG).

      3. Turn the tester on.

      4. Enter the following menus: Body / Pre-Crash / Active Test.

      5. Perform Active Test according to the display on the tester.

        Pre-Crash
        Tester Display Test Part Control Range Diagnostic Note
        Driver Seat Belt Motor Driver's seat belt motor

        ON: Seat belt motor operate

        OFF: Seat belt motor does not operate

        		 Seat belt (driver side) is fastened
        Passenger Seat Belt Motor Passenger's seat belt motor

        ON: Seat belt motor operate

        OFF: Seat belt motor does not operate

        		 Seat belt (passenger side) is fastened