Fail-Safe (Sonar Control Unit)

WARNING: This page is about a different car, the 2020 Infiniti QX50. However, it is still accessible from the selected car via links, so may be relevant.

Display contents of CONSULT	Fault	Fail-safe operation
U1000-01: CAN COMM CIRCUIT	Loss of communication with ABS actuator and electric unit (control unit)	Sonar system is ON (selector lever in reverse)
B2720-60: CORNER SENSOR [RL] B2720-61: CORNER SENSOR [RL] B2720-62: CORNER SENSOR [RL] B2720-63: CORNER SENSOR [RL] B2720-65: CORNER SENSOR [RL] B2720-67: CORNER SENSOR [RL] B2720-68: CORNER SENSOR [RL] B2720-83: CORNER SENSOR [RL] B2720-92: CORNER SENSOR [RL] B2721-60: CENTER SENSOR [RL] B2721-61: CENTER SENSOR [RL] B2721-62: CENTER SENSOR [RL] B2721-63: CENTER SENSOR [RL] B2721-65: CENTER SENSOR [RL] B2721-67: CENTER SENSOR [RL] B2721-68: CENTER SENSOR [RL] B2721-83: CENTER SENSOR [RL] B2721-92: CENTER SENSOR [RL] B2722-60: CENTER SENSOR [RR] B2722-61: CENTER SENSOR [RR] B2722-62: CENTER SENSOR [RR] B2722-63: CENTER SENSOR [RR] B2722-65: CENTER SENSOR [RR] B2722-67: CENTER SENSOR [RR] B2722-68: CENTER SENSOR [RR] B2722-83: CENTER SENSOR [RR] B2722-92: CENTER SENSOR [RR] B2723-60: CORNER SENSOR [RR] B2723-61: CORNER SENSOR [RR] B2723-62: CORNER SENSOR [RR] B2723-63: CORNER SENSOR [RR] B2723-65: CORNER SENSOR [RR] B2723-67: CORNER SENSOR [RR] B2723-68: CORNER SENSOR [RR] B2723-83: CORNER SENSOR [RR] B2723-92: CORNER SENSOR [RR] B2729-60: CORNER SENSOR [FL] B2729-61: CORNER SENSOR [FL] B2729-62: CORNER SENSOR [FL] B2729-63: CORNER SENSOR [FL] B2729-65: CORNER SENSOR [FL] B2729-67: CORNER SENSOR [FL] B2729-68: CORNER SENSOR [FL] B2729-83: CORNER SENSOR [FL] B2729-92: CORNER SENSOR [FL] B272A-60: CENTER SENSOR [FL] B272A-61: CENTER SENSOR [FL] B272A-62: CENTER SENSOR [FL] B272A-63: CENTER SENSOR [FL] B272A-65: CENTER SENSOR [FL] B272A-67: CENTER SENSOR [FL] B272A-68: CENTER SENSOR [FL] B272A-83: CENTER SENSOR [FL] B272A-92: CENTER SENSOR [FL] B272B-60: CENTER SENSOR [FR] B272B-61: CENTER SENSOR [FR] B272B-62: CENTER SENSOR [FR] B272B-63: CENTER SENSOR [FR] B272B-65: CENTER SENSOR [FR] B272B-67: CENTER SENSOR [FR] B272B-68: CENTER SENSOR [FR] B272B-83: CENTER SENSOR [FR] B272B-92: CENTER SENSOR [FR] B272C-60: CORNER SENSOR [FR] B272C-61: CORNER SENSOR [FR] B272C-62: CORNER SENSOR [FR] B272C-63: CORNER SENSOR [FR] B272C-65: CORNER SENSOR [FR] B272C-67: CORNER SENSOR [FR] B272C-68: CORNER SENSOR [FR] B272C-83: CORNER SENSOR [FR] B272C-92: CORNER SENSOR [FR]	Sensor sensor internal failure	Obstacle detection of the sensor in error is stopped
B2720-66: CORNER SENSOR [RL] B2721-66: CENTER SENSOR [RL] B2722-66: CENTER SENSOR [RR] B2723-66: CORNER SENSOR [RR] B2729-66: CORNER SENSOR [FL] B272A-66: CENTER SENSOR [FL] B272B-66: CENTER SENSOR [FR] B272C-66: CORNER SENSOR [FR]	Open circuit/short circuit to ground	Obstacle detection of the sensor in error is stopped Audible warning (sonar buzzer) of all sensors is stopped Sonar buzzer sounds for 3 seconds
B2724-23: SONAR CONTROL UNIT B2724-24: SONAR CONTROL UNIT B2724-44: SONAR CONTROL UNIT B2724-45: SONAR CONTROL UNIT B2724-46: SONAR CONTROL UNIT B2724-48: SONAR CONTROL UNIT B2724-49: SONAR CONTROL UNIT B2724-86: SONAR CONTROL UNIT B2724-87: SONAR CONTROL UNIT	Sensor control unit internal failure	Off indicator blinks periodically (500 ms ON, 500ms OFF) Sonar buzzer sounds for 3 seconds
B2724-55: SONAR CONTROL UNIT	Sensor control unit internal failure (not configured)
B272D-12: REAR BUZZER	Speaker power circuit short to voltage Speaker signal circuit short to voltage	Audible warning (sonar buzzer) of all sensors is stopped
B272D-14: REAR BUZZER	Speaker power circuit open/short to ground Speaker signal circuit open/short to ground Speaker ground circuit open	Audible warning (sonar buzzer) of all sensors is stopped