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:
CONSULT Function (LASER/RADAR)
APPLICATION ITEMSCONSULT performs the following functions via CAN communication with ADAS control unit and the communication with distance sensor (ICC sensor). Diagnosis mode Description
Self Diagnostic Result
Displays malfunctioning system memorized in distance sensor (ICC sensor)
Data Monitor
Displays real-time input/output data of distance sensor (ICC sensor)
Work support
It can monitor the adjustment direction indication in order to perform the radar adjustment operation smoothly
ECU Identification
Displays distance sensor (ICC sensor) part number
CAN Diag Support Monitor
The results of transmit/receive diagnosis of ITS communication can be read...
DTC Description
DTC DETECTION LOGIC DTC No. CONSULT screen terms DTC detection condition
C1A17–(44, 45, 46, 47, 48, 49)
CONTROL UNIT
Diagnosis condition
When Ignition switch is ON.
Signal (terminal)
—
Threshold
If distance sensor (ICC sensor) is malfunctioning
Diagnosis delay time
—
NOTE:
If any DTC “C1A17” is detected along with DTC “U1000”, first diagnose the DTC “U1000”...