Nissan Murano: System / Warning Chime System
System Description
SYSTEM DIAGRAM

DESCRIPTION
Combination Meter
The combination meter sounds the alarm buzzer installed in the combination meter when receiving the buzzer output signal transmitted from each unit.
BCM
BCM receives signals from various units and transmits a buzzer output signal to the combination meter via CAN communication if it judges that the warning buzzer should be activated.
Air Bag Diagnosis Sensor Unit
Air bag diagnosis sensor unit receives signals from the rear seat belt buckle switches, then transmits the signal to the combination meter via CAN communication.
WARNING CHIME FUNCTION LIST
| Warning functions | Refer to |
| Light reminder warning |
Light Reminder Warning |
| Parking brake release warning chime |
Parking Brake Release Warning Chime |
| Seat belt warning chime |
Seat Belt Warning Chime |
COMBINATION METER INPUT/OUTPUT SIGNAL (CAN COMMUNICATION SIGNAL)
Input signal
| Signal name | Transmit unit |
| Nissan Murano Vehicle speed signal |
ABS actuator and electric unit (control unit) |
| Buzzer output signal |
BCM |
-
Rear seat belt buckle switch RH signal
-
Rear seat belt buckle switch center signal
-
Rear seat belt buckle switch LH signal
|
Air bag diagnosis sensor unit |
Output signal
| Signal name | Reception unit |
| Nissan Murano Vehicle speed signal |
BCM |
| Front seat belt buckle switch LH/RH signals |
BCM |
BCM INPUT/OUTPUT SIGNAL (CAN COMMUNICATION SIGNAL)
Input signal
| Signal name | Transmit unit |
| Nissan Murano Vehicle speed signal |
Combination meter |
| Front seat belt buckle switch LH/RH signals |
Combination meter |
Output signal
| Signal name | Reception unit |
| Buzzer output signal |
Combination meter |
AIR BAG DIAGNOSIS SENSOR UNIT OUTPUT SIGNAL (CAN COMMUNICATION SIGNAL)
Output signal
| Signal name | Reception unit |
-
Rear seat belt buckle switch RH signal
-
Rear seat belt buckle switch center signal
-
Rear seat belt buckle switch LH signal
|
Combination meter |
Light Reminder Warning
SYSTEM DIAGRAMWARNING CHIME OPERATION CONDITIONSIf all of the following conditions are fulfilled: Operation conditions
Ignition switch
OFF
Combination switch (Lighting switch)
1st or 2nd position
Driver side door
Open [front door switch LH ON]
WARNING CHIME CANCEL CONDITIONSWarning is canceled if any of the following conditions are fulfilled: Operation conditions
Ignition switch
ON
Combination switch (Lighting switch)
OFF or AUTO position
Driver side door
Close [front door switch LH OFF]
SIGNAL PATH
BCM requires warning chime output to combination meter when it judges light reminder warning chime is necessary from signals below...
Other information:
Diagnosis Procedure
CHECK AIR MIX DOOR MOTOR RH POWER SUPPLY
Ignition switch ON.
Check voltage between air mix door motor RH harness connector and ground.
+ −
Voltage
(Approx.)
Air mix door motor RH
Connector Terminal
M156
1
Ground
Battery voltage
Is the inspection result normal?
YES>>
GO TO 2...
Supplemental front-impact air bag modules
Air bag Control Unit (ACU)
Occupant classification sensor (weight sensor)
Front seat-mounted side-impact supplemental air bag modules
Roof-mounted curtain side-impact and rollover supplemental air bags
Roof-mounted curtain side-impact and rollover supplemental air bag
inflators
Rear outboard seat-mounted sideimpact supplemental air bag modules
Seat belt with pretensioner(s) (rear outboard seats)
Satellite sensors
Seat belt with pretensioner(s) (front seats)
Pressure sensors in door (driver’s side shown; front passenger side is
similar)
Driver and passenger supplemental knee air bags
Crash zone sensor
WARNING
To ensure proper operation of the passenger’s
NISSAN Advanced Air Bag System,
please observe the following
items...