Nissan Pathfinder: Dtc/circuit Diagnosis - B2720 Corner Sensor [rl] ++

DTC Description

DTC DETECTION LOGIC

DTC No.	CONSULT screen terms (Trouble diagnosis content)		DTC detection condition
B2720–05	CORNER SENSOR [RL] (Rear sonar sensor LH outer)	—	Diagnosis condition	Ignition switch ON
			Signal (terminal)	—
			Threshold	Rear sonar sensor LH outer configuration incomplete or wrong
			Diagnosis delay time	4 seconds or more
B2720–11			Diagnosis condition	Ignition switch ON
			Signal (terminal)	Rear sonar sensor LH outer signal (terminal 22)
			Threshold	Rear sonar sensor LH outer signal circuit is short to ground
			Diagnosis delay time	4 seconds or more
B2720–12			Diagnosis condition	Ignition switch ON
			Signal (terminal)	Rear sonar sensor LH outer signal (terminal 22)
			Threshold	Rear sonar sensor LH outer signal circuit is short to voltage
			Diagnosis delay time	4 seconds or more
B2720–13			Diagnosis condition	Ignition switch ON
			Signal (terminal)	Rear sonar sensor LH outer signal (terminal 22)
			Threshold	Rear sonar sensor LH outer signal circuit is open
			Diagnosis delay time	4 seconds or more
B2720–16			Diagnosis condition	Ignition switch ON
			Signal (terminal)	Rear sonar sensor power supply (terminal 23)
			Threshold	Rear sonar sensor power supply is greater than 27 V
			Diagnosis delay time	4 seconds or more
B2720–17			Diagnosis condition	Ignition switch ON
			Signal (terminal)	Rear sonar sensor power supply (terminal 23)
			Threshold	Rear sonar sensor power supply is less than 5.2 V
			Diagnosis delay time	4 seconds or more
B2720–21			Diagnosis condition	Ignition switch ON
			Signal (terminal)	Rear sonar sensor LH outer signal (terminal 22)
			Threshold	Rear sonar sensor LH outer signal amplitude is small
			Diagnosis delay time	4 seconds or more
B2720–29			Diagnosis condition	Ignition switch ON
			Signal (terminal)	Rear sonar sensor LH outer signal (terminal 22)
			Threshold	Rear sonar sensor LH outer signal is abnormal
			Diagnosis delay time	4 seconds or more
B2720–34			Diagnosis condition	Ignition switch ON
			Signal (terminal)	Rear sonar sensor LH outer signal (terminal 22)
			Threshold	Rear sonar sensor LH outer signal is abnormal (pulse signal high side is short)
			Diagnosis delay time	4 seconds or more
B2720–35			Diagnosis condition	Ignition switch ON
			Signal (terminal)	Rear sonar sensor LH outer signal (terminal 22)
			Threshold	Rear sonar sensor LH outer signal is abnormal (pulse signal high side is long)
			Diagnosis delay time	4 seconds or more
B2720–43			Diagnosis condition	Ignition switch ON
			Signal (terminal)	—
			Threshold	Sonar control unit internal malfunction
			Diagnosis delay time	4 seconds or more
B2720–47			Diagnosis condition	Ignition switch ON
			Signal (terminal)	—
			Threshold	Sonar control unit sensor data lost
			Diagnosis delay time	4 seconds or more
B2720–49			Diagnosis condition	Ignition switch ON
			Signal (terminal)	—
			Threshold	Sonar control unit internal malfunction
			Diagnosis delay time	4 seconds or more
B2720–61			Diagnosis condition	Ignition switch ON
			Signal (terminal)	—
			Threshold	Sonar control unit internal malfunction
			Diagnosis delay time	4 seconds or more
B2720–65			Diagnosis condition	Ignition switch ON
			Signal (terminal)	—
			Threshold	Rear sonar sensor LH outer temperature is high
			Diagnosis delay time	4 seconds or more
B2720–66			Diagnosis condition	Ignition switch 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	—
B2720–68	Diagnosis condition	Ignition switch ON
	Signal (terminal)	—
	Threshold	Rear sonar sensor LH outer magnetic noise detected
	Diagnosis delay time	4 seconds or more
B2720–81	Diagnosis condition	Ignition switch ON
	Signal (terminal)	Rear sonar sensor LH outer signal (terminal 22)
	Threshold	Rear sonar sensor LH outer signal abnormal
	Diagnosis delay time	4 seconds or more
B2720–83	Diagnosis condition	Ignition switch ON
	Signal (terminal)	Rear sonar sensor LH outer signal (terminal 22)
	Threshold	Rear sonar sensor LH outer signal is abnormal
	Diagnosis delay time	4 seconds or more
B2720–88	Diagnosis condition	Ignition switch ON
	Signal (terminal)	—
	Threshold	Communication error
	Diagnosis delay time	4 seconds or more
B2720–92	Diagnosis condition	Ignition switch ON
	Signal (terminal)	Rear sonar sensor LH outer signal (terminal 22)
	Threshold	Rear sonar sensor LH outer signal is abnormal
	Diagnosis delay time	4 seconds or more
B2720–93	Diagnosis condition	Ignition switch ON
	Signal (terminal)	Rear sonar sensor LH outer signal (terminal 22)
	Threshold	Rear sonar sensor LH outer signal is abnormal
	Diagnosis delay time	4 seconds or more
B2720–95	Diagnosis condition	Ignition switch ON
	Signal (terminal)	Rear sonar sensor LH outer signal (terminal 22)
	Threshold	Rear sonar sensor LH outer signal is abnormal
	Diagnosis delay time	4 seconds or more
B2720–96	Diagnosis condition	Ignition switch ON
	Signal (terminal)	Rear sonar sensor LH outer signal (terminal 22)
	Threshold	Rear sonar sensor LH outer signal is abnormal
	Diagnosis delay time	4 seconds or more
B2720–97	Diagnosis condition	Ignition switch ON
	Signal (terminal)	—
	Threshold	Rear sonar sensor LH outer is covered with ice or mud
	Diagnosis delay time	4 seconds or more

POSSIBLE CAUSE

• Configuration

• Harness or connectors

• Rear sonar sensor LH outer temperature is high

• Rear sonar sensor LH outer magnetic noise is detected

• Rear sonar sensor LH outer is covered with ice or mud

• Rear sonar sensor LH outer

• Sonar control unit

FAIL-SAFE

Obstacle detection function is deactivated

DTC Confirmation Procedure

DTC CONFIRMATION PROCEDURE

CONSULT

1. Ignition switch ON.

2. Ignition switch OFF and wait at least 30 seconds.

3. Ignition switch ON and wait at least 30 seconds or more.

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

5. Check the DTC.

Is DTC B2720 detected?

YES>>

Refer to 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. Ignition switch OFF and wait at least 30 seconds.

3. Ignition switch ON and wait at least 30 seconds or more.

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

5. Check the DTC.

Is DTC B2720–05, 11, 12, 13, 16, 17, 21, 29, 34, 35, 43, 47, 49, 61, 65, 66, 68, 81, 83, 88, 92, 93, 95 or 97 detected?

YES>>

11, 66 or 88 – GO TO 2.

YES>>

12 – GO TO 3.

YES>>

13, 21, 29, 34 or 35 – GO TO 4.

YES>>

16 or 17 – GO TO 7.

YES>>

65 – GO TO 8.

YES>>

68 – GO TO 9.

YES>>

97 – GO TO 10.

YES>>

05 or 47 – GO TO 11.

YES>>

43, 49, 61, 81, 83, 92, 93, 95 or 96 – GO TO 12.

NO>>

Refer to Intermittent Incident.

CHECK REAR SONAR SENSOR LH OUTER SIGNAL CIRCUIT FOR 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 ground.

   Sonar control unit		Ground	Continuity
   Connector	Terminal
   M70	22	—	No

Is the inspection result normal?

YES>>

11 – GO TO 6.

YES>>

88 – GO TO 3.

YES>>

66 – GO TO 4.

NO>>

Repair or replace harness or connectors.

CHECK REAR SONAR SENSOR LH OUTER SIGNAL CIRCUIT FOR SHORT TO VOLTAGE

1. Ignition switch OFF.

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

3. Ignition switch ON.

4. Check the voltage between sonar control unit connector and ground.

   Sonar control unit		—	Voltage (Approx.)
   Connector	Terminal
   M70	22	Ground	0 V

Is the inspection result normal?

YES>>

GO TO 6.

NO>>

Repair or replace harness or connectors.

CHECK REAR SONAR SENSOR LH OUTER GROUND CIRCUIT FOR OPEN

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	B466	2	Yes

Is the inspection result normal?

YES>>

GO TO 5.

NO>>

Repair or replace harness or connectors.

CHECK REAR SONAR SENSOR LH OUTER GROUND CIRCUIT FOR OPEN

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	14	B466	3	Yes

Is the inspection result normal?

YES>>

GO TO 6.

NO>>

Repair or replace harness or connectors.

CHECK REAR SONAR SENSOR LH OUTER SIGNAL

1. Connect sonar control unit and rear sonar sensor LH outer connectors.

2. Ignition switch ON.

3. Check signal between the terminals of sonar control unit connector.

   Sonar control unit			Condition	Reference value
   Connector	(+)	(−)
   	Terminal	Terminal
   M70	22	14	Sensor signal input

Is the inspection result normal?

YES>>

Replace sonar control unit. Refer to Removal and Installation.

NO>>

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

CHECK REAR SONAR SENSOR POWER SUPPLY CIRCUIT

Check rear sonar sensor power supply circuit. Refer to DTC Description.

Is the inspection result normal?

YES>>

Inspection End.

NO>>

Repair or replace harness or connectors.

CHECK SONAR SENSOR TEMPERATURE

Check whether there is any factor which causes a temperature rise near sonar sensor.

Was there any factor?

YES>>

Remove factor.

NO>>

GO TO 12.

CHECK SONAR SENSOR NOISE

Check if there is any noise generating factor near sonar sensor.

Was there any factor?

YES>>

Remove factor.

NO>>

GO TO 12.

CHECK SONAR SENSOR BLOCKAGE

Make sure that the sonar sensor is not covered with snow or mud.

Is the sonar sensor covered with snow or mud?

YES>>

Clean the sonar sensor.

NO>>

GO TO 12.

PERFORM CONFIGURATION OF SONAR CONTROL UNIT

Perform configuration of sonar control unit. Refer to Description.

 

YES>>

GO TO 12.

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

CONSULT

1. Ignition switch ON.

2. Ignition switch OFF and wait at least 30 seconds.

3. Ignition switch ON and wait at least 30 seconds or more.

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

5. Check the DTC.

Is DTC B2720–05, 43, 47, 49, 61, 65, 68, 81, 83, 92, 93, 95, 96 or 97 detected?

YES>>

05, 47, 65, 68, 81, 83, 92, 93, 95, 96 or 97, replace rear sonar sensor LH outer. Refer to Removal and Installation.

YES>>

43, 49 or 61, replace sonar control unit. Refer to Removal and Installation.

NO>>

Inspection End.