Nissan Murano: Dtc/circuit Diagnosis / Amp on Signal Circuit

Diagnosis Procedure

CHECK CONTINUITY BETWEEN AV CONTROL UNIT AND BOSE SPEAKER AMP.

1. Ignition switch OFF.

2. Disconnect AV control unit connector and Bose speaker amp. connector.

3. Check continuity between AV control unit connector and Bose speaker amp. connector.

   AV control unit		Bose speaker amp.		Continuity
   Connector	Terminal	Connector	Terminal
   M161	1	B121	20	Yes

4. Check continuity between AV control unit connector and ground.

   AV control unit		Ground	Continuity
   Connector	Terminal
   M161	1	—	No

Is the inspection result normal?

GO TO 2.

Repair or replace harness or connectors.

CHECK AV CONTROL UNIT VOLTAGE

1. Connect AV control unit connector.

2. Ignition switch ON.

3. Check voltage between AV control unit connector and ground.

   AV control unit		Ground	Voltage (Approx.)
   (+)		(–)
   Connector	Terminal
   M161	1	—	Battery voltage

Is the inspection result normal?

Replace Bose speaker amp. Refer to Removal and Installation.

Replace AV control unit. Refer to Removal and Installation.