Fail-Safe Chart

HINT:

If a system malfunction occurs, the applicable DTCs will appear on the multi-information display.

1. The CRUISE main indicator light keeps blinking until the main switch is turned off, the master warning light comes on with the warning sound "Pop", and the display shows "E3". The cruise control operation is suspended until turning the main switch ON again. The auto cancel function deletes the stored vehicle speed and cancels the cruise control operation in the following conditions.
   1. When the vehicle speed signal malfunctions.
   2. When the electronic throttle parts malfunction.
   3. When the stop light switch has an open or short circuit.
   4. When the laser radar sensor malfunctions. (*1)
   5. When the light axis of the laser sensor is off position. (*1)

      *1: Only in the vehicle-to-vehicle distance control mode.

      Fig 1: Identifying Illumination Of Master Warning Light And Cruise Main Indicator Light

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. The CRUISE main indicator light blinks, the master warning light comes on with the warning sound "Pop", and the display shows "E2". The cruise control operation is suspended until the canceling condition is resolved (in the vehicle-to-vehicle distance control mode only). The auto cancel function cancels the cruise control operation in the following condition.
   1. When the wiper (Hi, Lo) operate (including the auto wiper).
   2. When the pattern select switch is in the "SNOW" mode.
   3. When the laser radar sensor receives strong light, such as sunlight, from the front side.
   4. When the vehicle-to-vehicle distance measurement is extremely unstable because of bad weather.
   Fig 2: Identifying Illumination Of Master Warning Light And Cruise Main Indicator Light

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. The auto cancel function cancels the cruise control operation in the following conditions. At this time, the CRUISE main indicator light blinks, the master warning light comes on with the warning sound "Pop" and the display shows "E1". The cruise control operation is suspended until the canceling condition is resolved (in the vehicle-to-vehicle distance control mode only).
   1. When the laser radar sensor has dirt on it.

      HINT:

      While the dynamic laser cruise control is operated, the ECM outputs a malfunction code for 0.15 sec. or more when it detects dirt.

If the following conditions are detected while the dynamic radar cruise control system is in operation, the system clears the stored vehicle speed and cancels the dynamic radar cruise control operation.

HINT:

In the vehicle-to-vehicle distance control mode, the stored vehicle speed in the ECM is maintained.

Fig 3: Identifying Illumination Of Master Warning Light And Cruise Main Indicator Light

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002