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Nissan Sentra B18 (2020-2025) Service Manual / Driver Information & Multimedia / Sonar System :: Ecu Diagnosis Information. Sonar Control Unit

Nissan Sentra B18 (2020-2025) Service Manual: Sonar System :: Ecu Diagnosis Information. Sonar Control Unit

Sonar Control Unit

Values on the Diagnosis Tool

Values on the Diagnosis Tool Note:

The following table includes information (items) inapplicable to this Nissan Sentra vehicle. For information (items) applicable to this vehicle, refer to CONSULT display items.

Monitor Item

Condition

Value/Status

Nissan Sentra Vehicle SPEED

While driving, equivalent to speedometer reading

mph, km/h

SONAR C/U POWER SUPPLY

Key ON.

Battery voltage

SENSOR VOLTAGE

Key ON, selector lever in R (reverse) position.

5.0 V

DETECTION MODE

 Note:

Item is displayed, but cannot be monitored.

SW OPRT AFTR IGN ON

 Note:

Item is displayed, but cannot be monitored.

SONAR TEMPORARY OFF

 Note:

Item is displayed, but cannot be monitored.

SONAR PERMANENT OFF

 Note:

Item is displayed, but cannot be monitored.

P N RANGE

When selector lever is in any position other than P (park) or N (neutral).

Off

When selector lever in P (park) or N (neutral) position.

On

LED

 Note:

Item is displayed, but cannot be monitored.

REVERSE RANGE

When transmission range switch is in any position other than R (reverse).

Off

When transmission range switch is in R (reverse) position.

On

SHRT DST FRM RR SENS

Key ON, selector lever in R (reverse) position.

cm/in

COR[RL]

COR[RL]→ CEN[RL]/CEN[R]

CEN[RL]/CEN[R]→ COR[RL]

CEN[RL]/CEN[R]

CEN[RL]→ CEN[RR]

CEN[RR]→ CEN[RL]

CEN[RR]

CEN[RR]/CEN[R]→ COR[RR]

COR[RR]→ CEN[RR]/CEN[R]

COR[RR]

RVRB TIME COR[RL]

Key ON, selector lever in R (reverse) position.

ms/sec

RVRB TIME COR[RR]

RVRB TIME CEN[RL]

RVRB TIME CEN[RR]

FRONT BUZZER

Key ON, buzzer ON.

On

Key ON, buzzer OFF.

Off

Buzzer request 1 (frequency)

 Note:

Item is displayed, but cannot be monitored.

Buzzer request 2 (frequency)

 Note:

Item is displayed, but cannot be monitored.

Buzzer request 3 (frequency)

 Note:

Item is displayed, but cannot be monitored.

Reference Value

Reference Value

TERMINAL LAYOUT

PHYSICAL VALUES

Terminal

(Wire color)

Description

Condition

Reference value

(Approx.)

+

–

Signal name

Input/Output

Ignition switch

Operation

5

(LA/L)

—

CAN-High

Input/Output

—

—

—

6

(LA/R)

—

CAN-Low

Input/Output

—

—

—

9

(BG)

14

(SB)

Rear sonar sensor RH inner

Input

ON

Shift position is R (reverse). Obstacle within range of rear sonar sensor RH inner.

10

(V)

14

(SB)

Rear sonar sensor RH outer

Input

ON

Shift position is R (reverse). Obstacle within range of rear sonar sensor RH outer.

12

(LA/SB)

Ground

IGN power supply

Input

ON

—

Battery voltage

14

(SB)

Ground

Rear sensor ground

—

ON

—

0 V

15

(B)

Ground

Ground

—

ON

—

0 V

18

(L)

Ground

Sonar buzzer signal

Output

ON

Selector lever D (drive) or R (reverse) position and object within detection range

Battery voltage

19

(BR)

Ground

Sonar buzzer power supply

Input

ON

Selector lever D (drive) or R (reverse) position

Battery voltage

21

(Y)

14

(SB)

Rear sonar sensor LH inner

Input

ON

Shift position is R (reverse). Obstacle within range of rear sonar sensor LH inner.

22

(R)

14

(SB)

Rear sonar sensor LH outer

Input

ON

Shift position is R (reverse). Obstacle within range of rear sonar sensor LH outer.

23

(GR)

Ground

Rear sonar sensor power

Output

ON

—

Battery voltage

Fail-Safe

Fail-Safe

Display contents of CONSULT

Fault

Fail-safe operation

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]

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]

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

Sonar control unit internal failure (under voltage)
  • Off indicator blinks periodically (500 ms ON, 500ms OFF)
  • Sonar buzzer sounds for 3 seconds

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

Sonar control unit internal failure

B2724–55: SONAR CONTROL UNIT

Sonar control unit internal failure (not configured)

B272D–12: FRONT BUZZER

  • Speaker power circuit

    short to voltage

  • Speaker signal circuit short to voltage

Audible warning (sonar buzzer) of all sensors is stopped.

B272D–14: FRONT BUZZER

  • Speaker power circuit open/short to ground

  • Speaker signal circuit open/short to ground

  • Speaker ground circuit open

B273B-11: REAR SENSOR POWER

Rear sensor power supply is short to ground

Obstacle detection function is deactivated

B273B-12: REAR SENSOR POWER

Rear sensor power supply is short to voltage

B273B-87: REAR SENSOR POWER

Connection error is detected between sonar control unit and rear sonar sensors

U0073–00: Control module comm Bus A Off

U0075–00: Control module comm Bus C Off

U1000–00: CAN COMM CIRCUIT

U1010–00: CONTROL UNIT(CAN)

CAN communication system

Obstacle detection is disabled

U2141–87: CAN comm err (TCM)

CAN communication system (TCM)

U2148–87: CAN comm err (brake control unit)

CAN communication system [ABS actuator and electric unit (control unit)]

U214E–87: CAN comm err (combination meter)

CAN communication system (combination meter)

U214F–87: CAN comm err (BCM)

CAN communication system (BCM)

U2152–87: CAN comm err (ADAS control unit)

CAN communication system (ADAS control unit)

U215B–87: CAN comm err (IPDM E/R)

CAN communication system (IPDM E/R)

Dtc Inspection Priority Chart

DTC Inspection Priority Chart

If multiple DTCs are detected simultaneously, check them one by one depending on the following DTC inspection priority chart:

Priority

Detected items (DTC)

1

  • U0073–00: Control module comm Bus A Off

  • U0075–00: Control module comm Bus C Off

  • U1000–00: CAN COMM CIRCUIT

  • U1010–00: CONTROL UNIT(CAN)

  • U2141–87: CAN comm err (TCM)

  • U2148–87: CAN comm err (brake control unit)

  • U214E–87: CAN comm err (combination meter)

  • U214F–87: CAN comm err (BCM)

  • U2152–87: CAN comm err (ADAS control unit)

  • U215B–87: CAN comm err (IPDM E/R)

2

  • 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]

  • B2720–66: 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]

  • B2721–66: 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]

  • B2722–66: 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]

  • B2723–66: CORNER SENSOR [RR]

  • B2723–67: CORNER SENSOR [RR]

  • B2723–68: CORNER SENSOR [RR]

  • B2723–83: CORNER SENSOR [RR]

  • B2723–92: CORNER SENSOR [RR]

  • 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

  • B2724–55: SONAR CONTROL UNIT

  • B2724–86: SONAR CONTROL UNIT

  • B2724–87: SONAR CONTROL UNIT

  • B272D-12: FRONT BUZZER

  • B272D-14: FRONT BUZZER

  • B273B–11: REAR SENSOR POWER

  • B273B–12: REAR SENSOR POWER

  • B273B–87: REAR SENSOR POWER

Dtc Index

DTC Index

CONSULT Display

Reference Page

B2720–60: CORNER SENSOR [RL]

DTC Description

B2720–61: CORNER SENSOR [RL]

B2720–62: CORNER SENSOR [RL]

B2720–63: CORNER SENSOR [RL]

B2720–65: CORNER SENSOR [RL]

B2720–66: 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]

DTC Description

B2721–61: CENTER SENSOR [RL]

B2721–62: CENTER SENSOR [RL]

B2721–63: CENTER SENSOR [RL]

B2721–65: CENTER SENSOR [RL]

B2721–66: 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]

DTC Description

B2722–61: CENTER SENSOR [RR]

B2722–62: CENTER SENSOR [RR]

B2722–63: CENTER SENSOR [RR]

B2722–65: CENTER SENSOR [RR]

B2722–66: 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]

DTC Description

B2723–61: CORNER SENSOR [RR]

B2723–62: CORNER SENSOR [RR]

B2723–63: CORNER SENSOR [RR]

B2723–65: CORNER SENSOR [RR]

B2723–66: CORNER SENSOR [RR]

B2723–67: CORNER SENSOR [RR]

B2723–68: CORNER SENSOR [RR]

B2723–83: CORNER SENSOR [RR]

B2723–92: CORNER SENSOR [RR]

B2724–23: SONAR CONTROL UNIT

DTC Description

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

B2724–55: SONAR CONTROL UNIT

B2724–86: SONAR CONTROL UNIT

B2724–87: SONAR CONTROL UNIT

B272D-12: FRONT BUZZER

DTC Description

B272D-14: FRONT BUZZER

B273B-11: REAR SENSOR POWER

DTC Description

B273B-12: REAR SENSOR POWER

B273B-87: REAR SENSOR POWER

U0073–00: Control module comm Bus A Off

DTC Description

U0075–00: Control module comm Bus C Off

DTC Description

U1000-00: CAN COMM CIRCUIT

DTC Description

U1010-00: CONTROL UNIT(CAN)

DTC Description

U2141–87: CAN comm err (TCM)

DTC Description

U2148–87: CAN comm err (brake control unit)

DTC Description

U214E–87: CAN comm err (combination meter)

DTC Description

U214F–87: CAN comm err (BCM)

DTC Description

U2152–87: CAN comm err (ADAS control unit)

DTC Description

U215B–87: CAN comm err (IPDM E/R)

DTC Description

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