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:
DTC Description
DTC DETECTION LOGIC DTC No. CONSULT screen terms (Trouble diagnosis content) DTC Detection Condition
B2195
ANTI-SCANNING
(Anti-scanning)
Diagnosis condition
When ignition switch ON.
Signal (terminal)
—
Threshold
ID verification between BCM and ECM that is out of the designated specification is detected
Diagnosis delay time
—
POSSIBLE CAUSEID verification request out of the designated specificationFAIL-SAFEInhibit engine cranking
DTC Confirmation Procedure
PERFORM DTC CONFIRMATION PROCEDURE
CONSULT
Ignition switch ON...
Removal and Installation
REMOVALRemove steering column cover screws (A).
NOTE:
Rotate steering wheel to access steering column cover screws.
Release steering column upper cover pawls using a suitable tool and remove.
: Pawl
Release gap hider (1) pawls from the steering column upper cover (2)...