Description If a malfunction in the engine control system is detected, the operations of VSC and TRC are prohibited by the fail safe function. When the signals from the engine are input normally, the fail safe is cancelled and the DTC is not stored.  

Description

Inspection procedure

Check engine control system

reconfirm DTC

Replace ECM

Reconfirm DTC

Description

If a malfunction in the engine control system is detected, the operations of VSC and TRC are prohibited by the fail safe function. When the signals from the engine are input normally, the fail safe is cancelled and the DTC is not stored.  

Ошибка P0500 Сигнал датчика скорости автомобиля "A"

The skid control ECU receives signals from the yaw rate and acceleration sensor via the CAN communication system. The yaw rate sensor has a built in acceleration sensor and detects the vehicle's condition using 2 circuits (GL1, GL2). If there is trouble in the bus lines between the yaw rate and acceleration sensor and the CAN communication system, the DTCs U0123/62 (malfunction in CAN communication with the yaw rate sensor) and U0124/95 (malfunction in CAN communication with the acceleration sensor) are output.

The ABS solenoid relay supplies power to the ABS solenoid and TRC solenoid. The solenoid relay is turned on 1.5 seconds after the engine switch is turned on (IG), and is turned off if an open or short in the solenoid is detected by self diagnosis performed when the vehicle starts running.

If a DTC of the motor line is stored, the ABS MOTOR1 (fail safe) relay cuts off the power supply to the ABS MOTOR2 relay and performs fail safe. While any of the ABS, TRC, VSC, or BA is operating, the skid control ECU (housed in the actuator assembly) turns the ABS MOTOR2 relay on and activates the pump motor in the brake actuator.