Nissan Sentra B18 (2020-2025) Service Manual / Driver Information & Multimedia / Audio, Visual & Navigation System :: Display Audio with 7" Color Display / Dtc/circuit Diagnosis / B1339 Rear Camera Connection

Nissan Sentra B18 (2020-2025) Service Manual: B1339 Rear Camera Connection

Dtc Description

DTC Description

DTC DETECTION LOGIC

DTC No.	CONSULT screen terms (Trouble diagnosis content)		DTC detection condition
B1339-8F	Rear camera connection (Rear view camera connection)	[–]	Diagnosis condition	When ignition switch is ON.
			Signal (terminal)	Camera image signal circuit (terminal 40)
			Threshold	–
			Diagnosis delay time	30 seconds or more

POSSIBLE CAUSE

Camera image signal circuit
Rear view camera
AV control unit

FAIL-SAFE

Rear view camera is inoperative.

Confirmation Procedure

Confirmation Procedure

PERFORM DTC CONFIRMATION PROCEDURE
1. 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 “MULTI AV”.
  5. Check DTC.
Is DTC B1339–8F detected?
YES>>
Proceed to DTC Diagnosis Procedure.
NO>>
To check malfunction symptom before repair: Refer to Intermittent Incident.
NO>>
Confirmation after repair: Inspection End.

Dtc Diagnosis Procedure

DTC Diagnosis Procedure

CHECK CAMERA IMAGE SIGNAL CIRCUIT FOR OPEN

Ignition switch OFF.
Disconnect AV control unit connector and rear view camera connector.

Check the continuity between AV control unit connector and rear view camera connector.

AV control unit		Rear view camera		Continuity
Connector	Terminal	Connector	Terminal	Continuity
M93	40	B30	3	Yes

Is the inspection result normal?

YES >>

GO TO 2.

NO >>

Repair harness or connector.

CHECK CAMERA IMAGE SIGNAL CIRCUIT FOR SHORT

Check the continuity between AV control unit connector and ground.

AV control unit		−	Continuity
Connector	Terminal	−	Continuity
M93	40	Ground	No

Is the inspection result normal?

YES >>

GO TO 3.

NO >>

Repair harness or connector.

CHECK CAMERA IMAGE SIGNAL

Connect AV control unit connector and rear view camera connector.
Ignition switch ON.
Shift the selector lever to “R” position

Check the signal between AV control unit connector and ground.

AV control unit		(-)	Condition
(+)
Connector	Terminal
M93	40	Ground	Camera image is displayed

Is the inspection result normal?

YES >>

Replace AV control unit. Refer to Removal and Installation.

NO >>

Replace rear view camera. Refer to Removal and Installation.

 Dtc/circuit Diagnosis

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