Nissan Murano: Dtc/circuit Diagnosis / B1315 Am/fm 1 Antenna

DTC Description

DTC DETECTION LOGIC

POSSIBLE CAUSE

• Radio antenna is not connected

• Harness or connector (ANT +B circuit is open or short to ground)

FAIL-SAFE

No AM/FM radio reception

PERFORM 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 “MULTI AV”.

5. Check DTC.

Is DTC B1315 detected?

Proceed to DTC Diagnosis Procedure.

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

Confirmation after repair: Inspection End.

CHECK ANTENNA CONNECTOR

1. Ignition switch OFF.

2. Visually inspect radio antenna, antenna feeder and antenna connector.

Is the inspection result normal?

GO TO 2.

Repair or replace malfunctioning parts.

CHECK ANTENNA CIRCUIT CONTINUITY

1. Ignition switch OFF.

2. Disconnect audio unit connector and antenna base connector.

3. Check continuity between audio unit connector and antenna base connector.

   Audio unit		Antenna base		Continuity
   Connector	Terminal	Connector	Terminal
   M124	67	R203	3	Yes

4. Check continuity between audio unit connector and ground.

   Audio unit		Ground	Continuity
   Connector	Terminal
   M124	67	—	No

Is the inspection result normal?

GO TO 3.

Repair or replace malfunctioning parts.

CHECK AUDIO UNIT VOLTAGE

1. Connect audio unit connector and antenna base connector.

2. Ignition switch ON.

3. Check the voltage between audio unit and ground.

   Audio unit		Ground	Voltage (Approx.)
   Connector	Terminal
   M124	67	—	Battery voltage

Is the inspection result normal?

Replace antenna. Refer to Removal and Installation.

Replace audio unit. Refer to Removal and Installation.