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Diagnosis System

  1. DTC COMBINATION TABLE 
    NOTE: Complete "CHECK CAN BUS LINE" (See CHECK CAN BUS LINE  ) to confirm that there is no malfunction in the CAN bus line, and then perform troubleshooting according to the following DTC combination table.
    1. Confirm the trouble mode according to the combination of output DTCs.
      DTC COMBINATION CHART

      Trouble Mode U0073/94 U0123/62 U0124/95 U0126/63
      Skid control ECU communication stop mode ◦ ◦ ◦ ◦
      Yaw rate sensor communication stop mode - ◦ ◦ -
      Steering sensor communication stop mode - - - ◦
      HINT:
      • DTC U1223 is also output when U0073 or U0124 is output.
      • U0073/94, U0123/62, U0124/95 and U0126/63 are the DTCs in the CAN communication system.
      • The above table shows combinations of these DTCs.
      • ◦.....DTCs that are being output.
      • -......DTCs that are not being output.
    2. DTC detection condition
      DTC DETECTION CONDITION CHART

      DTC No. DTC Detecting Condition
      U0073/94
      • Date transmission from the skid control ECU is not completed within 5 sec.
      • CAN bus-off condition occurs more than once within 100 ms. This situation repeatedly occurs 10 times.
      U0123/62
      • Skid control ECU terminal IG1 voltage is 10 V or more, and data is not received from the yaw rate sensor for more than 1 sec.
      • Skid control ECU terminal IG1 voltage is 10 V or more, and data cannot be received from the yaw rate sensor more than once within 5 sec. This situation repeatedly occurs more than 10 times.
      U0124/95
      • Skid control ECU terminal IG1 voltage is 10 V or more, and data is not received from the deceleration sensor for more than 1 sec.
      • Skid control ECU terminal IG1 voltage is 10 V or more, and data cannot be received from the deceleration sensor more than once within 5 sec. This situation repeatedly occurs more than 10 times.
      U0126/63
      • Skid control ECU terminal IG voltage is 10 V or more, and data is not received from the steering sensor for more than 1 sec.
      • Skid control ECU terminal IG voltage is 10 V or more, and data cannot be received from the steering sensor more than once within 5 sec. This situation repeatedly occurs more than 10 times.
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