Nissan Rogue (T33) 2021-Present Service Manual: B2720-34 Corner Sensor [rl]
DTC Description
DTC DETECTION LOGIC
| DTC | CONSULT screen items (Trouble diagnosis content) | DTC detection condition | ||
|---|---|---|---|---|
| B2720-34 |
CORNER SENSOR [RL] (Corner sensor [rear left]) |
Diagnosis condition | When ignition switch is ON | |
| Signal (terminal) | Rear sonar sensor signal LH outer | |||
| Threshold | An abnormal sensor signal is input from sonar sensor (Pulse signal high side is short) | |||
| Diagnosis delay time | 4 seconds or more | |||
POSSIBLE CAUSE
-
Harness and connector between sonar control unit and rear sonar sensor LH outer
-
Rear sonar sensor LH outer
FAIL-SAFE
Stop the obstacle detection function
CONFIRMATION PROCEDURE
PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT
-
Turn ignition switch ON.
-
Turn ignition switch OFF and wait at least 30 seconds.
-
Turn ignition switch ON and wait at least 30 seconds or more.
-
Select “Self Diagnostic Result” mode of “SONAR” using CONSULT.
-
Check the DTC.
Is DTC “B2720–34” detected?
YES>>Refer to Diagnosis Procedure.
NO-1>>To check malfunction symptom before repair: Refer to Intermittent Incident.
NO-2>>Confirmation after repair: INSPECTION END
Diagnosis Procedure
CHECK REAR SONAR SENSOR SIGNAL LH OUTER CIRCUIT (OPEN)
-
Turn ignition switch OFF.
-
Disconnect sonar control unit connector and rear sonar sensor LH outer connector.
-
Check continuity between sonar control unit harness connector and rear sonar sensor LH outer connector
Sonar control unit Rear sonar sensor LH outer Continuity Connector Terminal Connector Terminal B20 22 B457 2 Existed
Is the inspection result normal?
YES>>GO TO 2.
NO>>Repair the harness or connector.
CHECK REAR SONAR SENSOR LH OUTER GROUND CIRCUIT
Check continuity between sonar control unit harness connector and rear sonar sensor LH outer harness connector.
| Sonar control unit | Rear sonar sensor LH outer | Continuity | ||
|---|---|---|---|---|
| Connector | Terminal | Connector | Terminal | |
| B20 | 14 | B457 | 3 | Existed |
Is the inspection result normal?
YES>>GO TO 3.
NO>>Repair the harness or connector.
CHECK REAR SONAR SENSOR SIGNAL LH OUTER
-
Connect sonar control unit connector and rear sonar sensor LH outer connector.
-
Turn ignition switch ON.
-
Check the signal between sonar control unit terminals as per the following condition.
+ − Condition Voltage Sonar control unit Connector Terminal Connector Terminal B20 22 B20 14 -
Shift position is in R position.
-
When the sensor is detecting an obstacle

-
Is the inspection result normal?
YES>>Replace the sonar control unit. Refer to Removal and Installation.
NO>>Replace the rear sonar sensor LH outer. Refer to Removal and Installation.
Other materials:
Rear View Monitor. Symptom Diagnosis. Rear View Monitor System
Rear View Monitor System
Symptom Table
REAR VIEW MONITOR Symptoms Possible cause Inspection item
Camera image is not shown.
(Nissan Ariya Vehicle width and predictive course line are displayed.)
Harness between rear view camera and AV control unit
Rear view camera
AV contr ...
Diagnosis System (chassis Control Module)
Without Telematics System
CONSULT Function
APPLICATION ITEMSCONSULT can display each diagnostic item using the diagnostic test modes as follows. Diagnosis mode Description
Self Diagnostic Result
Display DTC which chassis control module memorizes
Data monitor
Displays chassis contr ...
Variable Compression Ratio Motor Rotation Angle Sensor
Component Inspection
CHECK VCR MOTOR ROTATION ANGLE SENSOR
Turn ignition switch OFF.
Disconnect VCR motor rotation angle sensor harness connector.
Check the continuity between VCR motor rotation angle sensor harness connectors.
VCR motor rotation angle sensor Continuity
Termina ...
