Fail-Safe (Sonar Control Unit)

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Fault

Fail-safe operation

U1000: CAN COMM CIRCUIT

Loss of communication with ABS actuator and electric unit (control unit)

Sonar system is ON (selector lever in reverse)

B2720: Rear left side external sensor

• Open circuit/short circuit to ground
• Short circuit to voltage
• Sensor element malfunction

• Obstacle detection of the sensor in error is stopped
• Audible warning of all sensors is stopped
• Sonar buzzer sounds for 3 seconds

B2721: Rear left side internal sensor

B2722: Rear right side internal sensor

B2723: Rear right side external sensor

B2725: Rear buzzer

• Open circuit/short circuit to ground
• Short circuit to voltage

Audible warning (sonar buzzer) of all sensors is stopped