Different diameter tire malfunction

The skid control ecu measures the speed of each wheel by receiving signals from the speed sensor.

These signals are used for recognizing that all 4 wheels are operating properly. Therefore, all wheel signals must be equal.

1. 1
   Check tire size
2. 2
   Check the diameter of all 4 tires.

1. 1
   Check speed sensor rotor
2. 2
   Remove the drive shaft, and check around the speed sensor rotor.

3. Check speed sensor

1. 1
   Check the speed sensor circuit (see page bc-64 or bc- 70).
2. 2
   Check wire harness (skid control ecu - each speed sensor)
3. 3
   Check the speed sensor circuit (see page bc-69 or bc- 70).

   

   

1. 1
   Reconfirm dtc
2. 2
   Clear the dtcs (see page bc-47).
3. 3
   Drive the vehicle at more than 20 km/h for more than 60 seconds.
4. 4
   Check if the same dtcs are detected.

Result