HYBRID BATTERY SYSTEM DIAGNOSIS SYSTEM


  1. DESCRIPTION


    1. The EV control ECU has a self-diagnosis system. If the computer, hybrid control system, or a component is not working properly, the ECU records the conditions that relate to the fault. The ECU also illuminates the master warning light in the combination meter assembly and provides other appropriate messages on the multi-information display, such as the EV battery warning message, or discharge warning message.

      A01MGF5C01
      *A for LHD *B for RHD
      *1 READY Indicator *2 Master Warning Light
      *3 Charging System Warning Light *4 Multi-information Display

      Tech Tips

      The master warning light will illuminate when the hybrid control system is malfunctioning.

  2. 2 TRIP DETECTION LOGIC


    • When a malfunction is first detected, the malfunction is temporarily stored in the EV control ECU memory (1st trip). If the same malfunction is detected during the next drive cycle, the master warning light is illuminated (2nd trip).

  3. FREEZE FRAME DATA


    • The EV control ECU records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was moving or stationary, whether the hybrid control system was warmed up or not, as well as other data recorded at the time of a malfunction.

  4. AUXILIARY BATTERY VOLTAGE


    • If voltage is below 11 V, replace or recharge the auxiliary battery.

      Note

      After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work.

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