Nissan Murano: Dtc/circuit Diagnosis / Amp on Signal Circuit
Diagnosis Procedure
CHECK CONTINUITY BETWEEN AV CONTROL UNIT AND BOSE SPEAKER AMP.
-
Ignition switch OFF.
-
Disconnect AV control unit connector and Bose speaker amp. connector.
-
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 |
-
Check continuity between AV control unit connector and ground.
| AV control unit |
Ground |
Continuity |
| Connector |
Terminal |
| M161 |
1 |
— |
No |
Is the inspection result normal?
YES>>
GO TO 2.
NO>>
Repair or replace harness or connectors.
CHECK AV CONTROL UNIT VOLTAGE
-
Connect AV control unit connector.
-
Ignition switch ON.
-
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?
YES>>
Replace Bose speaker amp. Refer to Removal and Installation.
NO>>
Replace AV control unit. Refer to Removal and Installation.
Diagnosis Procedure
CONNECTOR CHECK
Check the AV control unit, Bose speaker amp. and speaker connectors for the following:
Proper connection
Damage
Disconnected or loose terminals
Is the inspection result normal?
YES>>
GO TO 2...
Diagnosis Procedure
CHECK STEERING WHEEL AUDIO CONTROL SWITCH RESISTANCE
Ignition switch OFF.
Disconnect combination switch connector.
Check resistance between the terminals of combination switch connector...
Other information:
Inspection
Check front and rear axle and suspension parts for excessive play, cracks, wear or other damage.
Shake each wheel to check for excessive play.
Check wheel bearings for smooth operation.
Check axle and suspension nuts and bolts for looseness...
Body Center Marks
Factory marks exist on certain parts of the body to indicate the vehicle center. When repairing the Nissan Murano vehicle frame (members, pillars, etc.) damaged in an accident the most accurate and effective repair will be achieved by using these marks together with body alignment specifications...