Nissan Murano: Sonar System :: Dtc/circuit Diagnosis / B2720 Corner Sensor [rl]

Nissan Murano (Z52) 2015-2024 Service Manual / Driver Information & Multimedia / Sonar System :: Dtc/circuit Diagnosis / B2720 Corner Sensor [rl]

DTC Description

DTC DETECTION LOGIC

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

 DTC detection condition
B2720–60

CORNER SENSOR [RL]

(Rear sonar sensor LH outer) 		— Diagnosis condition When ignition switch is ON
Signal (terminal) —
Threshold Rear sonar sensor LH outer internal failure (reset error)
Diagnosis delay time —
B2720–61 Diagnosis condition When ignition switch is ON
Signal (terminal) —
Threshold Rear sonar sensor LH outer internal failure (configuration error)
Diagnosis delay time —
B2720–62 Diagnosis condition When ignition switch is ON
Signal (terminal) —
Threshold Rear sonar sensor LH outer internal failure (power supply error)
Diagnosis delay time —
B2720–63 Diagnosis condition When ignition switch is ON
Signal (terminal) —
Threshold Rear sonar sensor LH outer internal failure (self diag result)
Diagnosis delay time —
B2720–65 Diagnosis condition When ignition switch is ON
Signal (terminal) —
Threshold Rear sonar sensor LH outer internal failure (over temperature)
Diagnosis delay time —
B2720–66 Diagnosis condition When ignition switch is ON
Signal (terminal) Rear sonar sensor LH outer signal (terminal 22)
Threshold Rear sonar sensor LH outer signal circuit is open or short to ground
Diagnosis delay time —
B2720–67 Diagnosis condition When ignition switch is ON
Signal (terminal) —
Threshold Rear sonar sensor LH outer internal failure (diag dump error)
Diagnosis delay time —
B2720–68 Diagnosis condition When ignition switch is ON
Signal (terminal) —
Threshold Rear sonar sensor LH outer internal failure (resonator error)
Diagnosis delay time —
B2720–83 Diagnosis condition When ignition switch is ON
Signal (terminal) —
Threshold Rear sonar sensor LH outer internal failure (CRC error)
Diagnosis delay time —
B2720–92 Diagnosis condition When ignition switch is ON
Signal (terminal) —
Threshold Rear sonar sensor LH outer internal failure (membrane error)
Diagnosis delay time —

POSSIBLE CAUSE

  • Harness or connectors

  • Rear sonar sensor LH outer

FAIL-SAFE

  • Obstacle detection of rear sonar sensor LH outer is stopped

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

  • Sonar buzzer sounds for 3 seconds

DTC Confirmation Procedure

DTC CONFIRMATION PROCEDURE

CONSULT

  1. Ignition switch ON.

  2. Select “Self Diagnostic Result” mode of “SONAR”.

Is DTC B2720-60, 61, 62, 63, 65, 66, 67, 68, 83, 92 detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO>>

Confirmation after repair: Inspection End.

Diagnosis Procedure

DETERMINE MALFUNCTION TYPE

CONSULT

  1. Ignition switch ON.

  2. Select “Self Diagnostic Result” mode of “SONAR”.

  3. Check DTC.

Is DTC B2720–60, 61, 62, 63, 65, 66, 67, 68, 83 or 92 detected?

YES>>

66 – GO TO 2.

YES>>

60, 61, 62, 63, 65, 67, 68, 83 or 92 – GO TO 5.

NO>>

Refer to Intermittent Incident.

CHECK REAR SONAR SENSOR LH OUTER SIGNAL CIRCUIT FOR OPEN OR SHORT TO GROUND

  1. Ignition switch OFF.

  2. Disconnect sonar control unit and rear sonar sensor LH outer connectors.

  3. Check continuity between sonar control unit connector and rear sonar sensor LH outer connector.

    Sonar control unit Rear sonar sensor LH outer Continuity
    Connector Terminal Connector Terminal
    M70 22 B455 2 Yes

  4. Check continuity between sonar control unit connector and ground.

    Sonar control unit — Continuity
    Connector Terminal
    M70 22 Ground No

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

Repair or replace harness or connectors.

CHECK REAR SONAR SENSOR LH OUTER POWER CIRCUIT FOR OPEN OR SHORT TO GROUND

  1. Check continuity between sonar control unit connector and rear sonar sensor LH outer connector.

    Sonar control unit Rear sonar sensor LH outer Continuity
    Connector Terminal Connector Terminal
    M70 23 B455 3 Yes

  2. Check continuity between sonar control unit connector and ground.

    Sonar control unit — Continuity
    Connector Terminal
    M70 23 Ground No

Is the inspection result normal?

YES>>

GO TO 4.

NO>>

Repair or replace harness or connectors.

CHECK REAR SONAR SENSOR LH OUTER GROUND CIRCUIT FOR OPEN

Check continuity between sonar control unit connector and rear sonar sensor LH outer connector.

Sonar control unit Rear sonar sensor LH outer Continuity
Connector Terminal Connector Terminal
M70 14 B455 1 Yes

Is the inspection result normal?

YES>>

Replace rear sonar sensor LH outer. Refer to Removal and Installation.

NO>>

Repair or replace harness or connectors.

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

CONSULT

  1. Ignition switch ON.

  2. Erase DTC.

  3. Select “Self Diagnostic Result” mode of “SONAR”.

  4. Check DTC.

Is DTC B2720–60, 61, 62, 63, 65, 67, 68, 83, or 92 detected?

YES>>

Replace rear sonar sensor LH outer. Refer to Removal and Installation.

NO>>

Inspection End.

    Sonar System :: Dtc/circuit Diagnosis

    ..

    B2724 Sonar Control Unit

    DTC Description DTC DETECTION LOGIC DTC No. CONSULT screen terms (Trouble diagnosis content) DTC detection condition B2724–23 SONAR CONTROL UNIT (Sonar control unit) — Diagnosis condition When ignition switch is ON Signal (terminal) — Threshold Sonar ECU internal failure (under voltage) Diagnosis delay time — B2724–24 Diagnosis condition When ignition switch is ON Signal (terminal) — Threshold Sonar ECU internal failure (over voltage) Diagnosis delay time — B2724–44 Diagnosis condition When ignition switch is ON Signal (terminal) — Threshold Sonar ECU internal failure (RAM failure) Diagnosis delay time — B2724–45 Diagnosis condition When ignition switch is ON Signal (terminal) — Threshold Sonar ECU internal failure (ROM failure) Diagnosis delay time — B2724–46 Diagnosis condition When ignition switch is ON Signal (terminal) — Threshold Sonar ECU internal failure (EEPROM failure) Diagnosis delay time — B2724–48 Diagnosis condition When ignition switch is ON Signal (terminal) — Threshold Sonar ECU internal failure (internal software execution failure) Diagnosis delay time — B2724–49 Diagnosis condition When ignition switch is ON Signal (terminal) — Threshold Sonar ECU internal failure (basic chip set failure) Diagnosis delay time — B2724–55 Diagnosis condition When ignition switch is ON Signal (terminal) — Threshold Sonar ECU internal failure (not configured) Diagnosis delay time — B2724–86 Diagnosis condition When ignition switch is ON Signal (terminal) — Threshold Sonar ECU internal failure (SPI comm failure) Diagnosis delay time — B2724–87 Diagnosis condition When ignition switch is ON Signal (terminal) — Threshold Sonar ECU internal failure (high side switch failure) Diagnosis delay time — POSSIBLE CAUSE Charging system malfunction Sonar control unit power supply or ground circuit Sonar control unit configuration Sonar control unit FAIL-SAFE Off indicator blinks periodically (500ms ON, 500ms OFF)...

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