Nissan Rogue (T33) 2021-Present Service Manual: B2731-34 Side Sensor [rr]
DTC Description
DTC DETECTION LOGIC
| DTC | CONSULT screen items (Trouble diagnosis content) | DTC detection condition | ||
|---|---|---|---|---|
| B2731-34 |
SIDE SENSOR [RR] (Side sensor [RR]) |
Diagnosis condition | When ignition switch is ON | |
| Signal (terminal) | Rear sonar sensor signal RH side | |||
| 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 RH side
-
Rear sonar sensor RH side
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 “B2731–34” 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 RH SIDE CIRCUIT (OPEN)
-
Turn ignition switch OFF.
-
Disconnect sonar control unit connector and rear sonar sensor RH side connector.
-
Check continuity between sonar control unit harness connector and rear sonar sensor RH side connector
Sonar control unit Rear sonar sensor RH side Continuity Connector Terminal Connector Terminal B49 50 B464 2 Existed
Is the inspection result normal?
YES>>GO TO 2.
NO>>Repair the harness or connector.
CHECK REAR SONAR SENSOR RH SIDE GROUND CIRCUIT
Check continuity between sonar control unit harness connector and rear sonar sensor RH side harness connector.
| Sonar control unit | Rear sonar sensor RH side | Continuity | ||
|---|---|---|---|---|
| Connector | Terminal | Connector | Terminal | |
| B20 | 14 | B464 | 3 | Existed |
Is the inspection result normal?
YES>>GO TO 3.
NO>>Repair the harness or connector.
CHECK REAR SONAR SENSOR SIGNAL RH SIDE
-
Connect sonar control unit connector and rear sonar sensor RH side 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 B49 50 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 RH side. Refer to Removal and Installation.
Other materials:
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DTC Description
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CONSULT screen items
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Component Function Check
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CONSULT
Ignition switch ON.
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