Nissan Murano: System / I-Da
System Description
SYSTEM DIAGRAM

ADAS CONTROL UNIT INPUT/OUTPUT SIGNAL ITEM
Input Signal Item
| Transmit unit | Signal name | Description |
| ABS actuator and electric unit (control unit) |
CAN communication |
Nissan Murano Vehicle speed signal |
Receives the wheel speed of the four wheels |
| Combination meter |
CAN communication |
System selection signal |
Receives a selection state of each item in “Driver Assistance” selected with the combination meter |
| Steering angle sensor |
CAN communication |
Steering angle sensor signal |
Receives the amount of rotation, rotational angle, and rotational direction of the steering wheel |
Output Signal Item
| Reception unit | Signal name | Description |
| Combination meter |
CAN communication |
Meter display signal |
I-DA status signal |
Transmits a signal and displays the status on the Nissan Murano vehicle information display |
| Sonar control unit |
ITS communication |
Buzzer output signal |
Transmits a buzzer drive signal to activates the warning system buzzer |
FUNCTION DESCRIPTION
-
The Intelligent Drive Alertness (I-DA) is controlled by the ADAS control unit control unit.
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ON/OFF of the Intelligent Drive Alertness (I-DA) is performed by using the combination meter.
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Intelligent Drive Alertness system helps alert the driver when the system detects a lack of attention or driving fatigue.
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The system monitors driving style and steering behavior over a period of time, and it detects changes from the normal pattern.
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When the system detects that driver attention is decreasing over a period of time, the system uses an audible and visual warning to suggest that the driver take a break.
OPERATION DESCRIPTION
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When the system detects that driver fatigue or that driver attention is decreasing, the message “Take a break?” appears in the Nissan Murano vehicle information display and a chime sounds when the vehicle is driven at speeds above 60 km/h (37 MPH).
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The system continuously monitors driver attention and can provide multiple warnings per trip.
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The system resets and starts reassessing driving style and steering behavior when the ignition switch is cycled from on to off and back on.
Operation Condition
NOTE:
-
Intelligent Drive Alertness (I-DA) system ON/OFF can be set on the combination meter.
-
When the ignition switch OFF, the system is reset.
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The Intelligent Drive Alertness (I-DA) system may not function properly, depending on the situation. Refer to Precautions for Intelligent Drive Alertness.
System Description
SYSTEM DIAGRAMADAS CONTROL UNIT INPUT/OUTPUT SIGNAL ITEMInput Signal Item Transmit unit Signal name Description
ECM
CAN communication
Closed throttle position signal
Receives idle position state (ON/OFF)
Accelerator pedal position signal
Receives accelerator pedal position (angle)
Engine speed signal
Receives engine speed
TCM
CAN communication
Current gear position signal
Receives a current gear position
Shift position signal
Receives a selector lever position
Output shaft revolution signal
Receives the number of revolutions of output shaft
Input shaft revolution signal
Receives the number of revolutions of input shaft
ABS actuator and electric unit (control unit)
CAN communication
ABS malfunction signal
Receives a malfunction state of ABS
TCS malfunction signal
Receives a malfunction state of TCS
VDC malfunction signal
Receives a malfunction state of VDC
Nissan Murano Vehicle speed signal
Receives the wheel speed of all four wheels
Brake fluid pressure signal
Receives brake fluid pressure
Steering angle sensor
CAN communication
Steering angle sensor signal
Receives the amount of rotation, rotational angle, and rotational direction of the steering wheel
Combination meter
CAN communication
System selection signal
Receives a selection state of each item in "Emergency Brake" selection with the combination meter
Sonar control unit
CAN communication
Sonar sensor signal
Receives obstacle information (existence & distance)
BCM
CAN communication
Stop lamp switch signal
Receives an operational state of the brake pedal
Output Signal Item Reception unit Signal name Description
ECM
CAN communication
Torque down request signal
Transmits a signal to control the electric throttle control actuator...
System Description
SYSTEM DIAGRAMADAS CONTROL UNIT INPUT/OUTPUT SIGNAL ITEMInput Signal Item Transmit unit Signal name Description
ABS actuator and electric unit (control unit)
CAN communication
Nissan Murano Vehicle speed signal (ABS)
Receives wheel speeds of front wheels...
Other information:
The vehicle should be driven with the VDC
system on for most driving conditions.
If the vehicle is stuck in mud or snow, the
VDC system reduces the engine output to
reduce wheel spin. The engine speed will
be reduced even if the accelerator is depressed
to the floor...
Values on the Diagnosis Tool
NOTE:
The following table includes information (items) inapplicable to this Nissan Murano vehicle: For information (items) applicable to this vehicle, refer to CONSULT display items.
Monitor item Condition Value/Status
STOP LAMP SW
Brake pedal: Depressed
On
Brake pedal: Released
Off
ENG SPEED SIG
Engine stopped
(Engine speed: Less than 400 rpm)
Stop
Engine running
(Engine speed: 400 rpm or more)
Run
ETS ACTUATOR
Engine stopped (Ignition switch: ON)
Off
Engine running
On
4WD WARN LAMP
AWD warning icon/display: ON
On
AWD warning icon/display: OFF
Off
4WD MODE SW
Always
AUTO
4WD MODE MON
Always
AUTO
DIS-TIRE MONI
Nissan Murano Vehicle running with normal size tire installed
0 – 4 mm
Nissan Murano Vehicle running with improper size tire installed (Front/rear tire size difference, wear condition)
4 – 8 mm, 8 – mm
P BRAKE SW
Parking brake operated
On
Parking brake not operated
Off
BATTERY VOLT
Always
Battery voltage
THRTL POS SEN
When depressing accelerator pedal
(Value rises gradually in response to throttle position...