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Fail-Safe Table

WARNING: This page is about a different car, the 2006 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.
  1. FAIL-SAFE FUNCTION 
    1. When communication fails in any of the CAN bus lines (communication lines) due to a short circuit or any other causes, the fail-safe function, which is specified for each system, operates to prevent the system from malfunctioning.
    2. This function operates for each system when communication is impossible. (For further details, see the references for each system.)
      Function ECM Skid Control ECU Steering Angle Sensor Yaw Rate Sensor Action when unable to communicate DTC detection (Driver detectable)
      VSC Control (Controls VSC/TRC engine output) - Rx Tx Tx VSC
      function stops
      Detectable (Lamp comes on)
      VSC Control (Controls VSC/TRC engine output) Rx or Tx Tx or Rx - - VSC
      functions stops
      Detectable (Lamp comes on)

    HINT:

    • Rx: Reception from each ECU (sensor).
    • Tx: Transmission to each ECU (sensor).