Nissan Pathfinder: System Description - System ++

Meter System

System Description

SYSTEM DIAGRAM

Combination Meter Input Signal (CAN Communication Signal)

Transmit unit	Signal name
BCM	Buzzer output signal
	Dimmer signal
	Door switch signal
	Front fog light status signal
	High beam assist indicator signal
	High beam status signal
	Light reminder warning signal
	Low beam status signal
	Low tire pressure warning lamp signal
	Low tire pressure wheel location signal
	Position light status signal
	Front seat belt buckle switch LH signal
	Sleep wake up signal
	TPMS malfunction warning lamp signal
	ECO advice signal
TCM	Shift position signal
	Electric shift warning message signal
	Electric shift warning lamp signal
	Shift P range request display signal
	Shift refuse buzzer signal
	Neutral hold mode signal
ECM	Battery warning request signal (ECM)
	ECO mode indicator signal
	ECO pedal guide signal
	Engine coolant temperature signal
	Engine oil pressure warning lamp signal
	Engine speed signal
	Engine status signal
	Fuel consumption monitor signal
	Remaining distance signal
	Nissan Pathfinder Vehicle speed display signal
EPS (Electric Power Steering) control unit	Power steering warning lamp signal
ADAS (Advanced Driver Assistance System) control unit 2	Buzzer output signal
	Meter display signal
	AEB warning lamp signal
	RAB warning lamp signal
Air bag diagnosis sensor unit	Occupant detection signal
	SRS air bag warning lamp signal
	Front seat belt buckle switch RH signal
	2nd row seat belt buckle switch LH signal
	2nd row seat belt buckle switch CTR signal
	2nd row seat belt buckle switch RH signal
	3rd row seat belt buckle switch LH signal
	3rd row seat belt buckle switch CTR signal
	3rd row seat belt buckle switch RH signal
IPDM E/R (Intelligent Power Distribution Module Engine Room)	Battery warning request signal (IPDM E/R)
	Headlamp warning signal
	Starter relay status signal
Intelligent Key unit	Buzzer output signal
	Meter display signal
Chassis control module	Meter display signal
	Automatic brake hold indicator lamp signal
	Drive mode signal
Around View® Monitor control unit	Buzzer output signal
Sonar control unit	Parking sensor error signal
	Sonar indicator signal
ABS actuator and electric unit (control unit)	ABS warning lamp signal
	Brake warning lamp signal
	Buzzer output signal
	Electric parking brake indicator lamp signal
	Electric parking brake warning lamp signal
	Electric parking brake status signal
	Odometer signal
	VDC OFF indicator lamp signal
	VDC warning lamp signal
4WD (wheel drive) control unit	4WD warning display signal
	Torque distribution indicator signal
Driver seat control unit	Memory guidance display request signal

DESCRIPTION

Combination Meter

• The combination meter receives necessary signals from each unit, switch, and sensor to control the following functions.

  • Measuring instruments

    • Speedometer

    • Tachometer

    • Engine coolant temperature gauge

    • Fuel gauge

  • Warning lamps

  • Indicator lamps

  • Meter illumination control

  • Meter effect function

  • Information display

• The combination meter incorporates a chime function that sounds an audible alarm with the master speaker. For further details, refer to Combination Meter

  .

• The combination meter includes an on board diagnosis function.

• The combination meter can be diagnosed with CONSULT.

METER CONTROL FUNCTION LIST

System				Description	Reference
Measuring instruments	Speedometer			Indicates Nissan Pathfinder vehicle speed.	System Description
	Tachometer			Indicates engine speed.	System Description
	Engine coolant temperature gauge			Indicates engine coolant temperature.	System Description
	Fuel gauge			Indicates fuel level.	System Description
Warning lamp/indicator lamp				The warning lamp/indicator lamp turns ON or turns OFF, according to system malfunction or Nissan Pathfinder vehicle condition.	Design
Meter illumination control	Meter illumination control function			Switch back and forth between daytime mode and night mode, according to a light switch position.	System Description
	Back light illumination control function			The operation of the illumination control switch allows the brightness adjustment of meter illumination.
Meter effect function	Engine-start effect function			Meter illumination at ignition switch ON from OFF to produce illumination effects.	System Description
Information display				The Information display displays status, according to system malfunction or Nissan Pathfinder vehicle condition.	System Description

Speedometer

System Description

SYSTEM DIAGRAM

DESCRIPTION

• The ECM transmits a vehicle speed display signal to the combination meter via CAN communication.

• The combination meter indicates a Nissan Pathfinder vehicle speed to the speedometer, based on the vehicle speed display signal received from the ECM.

Tachometer

System Description

SYSTEM DIAGRAM

DESCRIPTION

• ECM converts the pulse signal provided by the crankshaft position sensor to an engine speed signal and transmits it to the combination meter via CAN communication.

• The combination meter indicates the engine speed to the tachometer according to the engine speed signal received via CAN communication.

Engine Coolant Temperature Gauge

System Description

SYSTEM DIAGRAM

DESCRIPTION

• ECM reads the engine coolant temperature signal from the engine coolant temperature sensor and transmits the signal to the combination meter via CAN communication.

• The combination meter indicates the engine coolant temperature to the engine coolant temperature gauge according to the engine coolant temperature signal received via CAN communication.

Fuel Gauge

System Description

SYSTEM DIAGRAM

DESCRIPTION

• The fuel level sensor unit sends a variable resistor signal to the combination meter.

• The fuel gauge indicates the approximate fuel level in the fuel tank.

Refuel Control

The combination meter accelerates the fuel gauge if the all conditions listed below are met, or the ignition switch changes from OFF to ON.

• Ignition switch ON.

• The vehicle is not moving.

• The fuel level change by approximately 4 (1 US gal,7/8 Imp gal) or more.

Meter Illumination Control

System Description

SYSTEM DIAGRAM

DESCRIPTION

Back Light Illumination Control Function

The operation of the illumination control switch allows the brightness adjustment of meter illumination.

Meter illumination	The number of adjustable steps
Daytime	22 step
Nighttime	22 step

Meter Illumination Control Function

• Combination meter controls meter illumination, based on the dimmer signal.

• When ignition is on the combination meter switches mode between Daytime mode and Nighttime mode, according to the following conditions.

  Condition			Meter illumination
  Combination switch (lighting switch)	1ST or 2ND position	Outdoor: Bright*	Daytime mode
  		Outdoor: Dark*	Nighttime mode
  	AUTO POSITION	Outdoor: Bright*	Daytime mode
  		Outdoor: Dark*	Nighttime mode
  	Off		Daytime mode

  *: For further information, refer to System Description.

Signal Path

Signal name	Signal path
Ignition signal	—
Dimmer signal	BCM Combination meter

Meter Effect Function

System Description

SYSTEM DIAGRAM

DESCRIPTION

Engine-start Effect Function

When recognizing an engine start, the combination meter controls the following items for producing the effect:

• Speedometer

• Tachometer

• Information display

• Meter illumination

Meter and Illumination Operations During Engine-start Effect

The combination meter controls the following items during the engine-start effect:

Control item		Operation
Speedometer		Sweeps the pointer.
Tachometer		Sweeps the pointer.
Illumination ring		Increases the brightness to the effect level in stages.
Pointers		Turns on the illumination at the effect level.
Information display		Display the animation.

NOTE:

The pointers are stopped and illumination is turned off while cranking the engine.

 

Engine Start Judgement

The combination meter judges “engine-start” and activates the engine-start effect only once when the following operational conditions are all satisfied:

Operational condition
Ignition switch	ON position
Nissan Pathfinder Vehicle speed	Less than 1 km/h (0.6 MPH)
Engine state	After cranking the engine
Information display (SETTING)	The setting of “Welcome Effect” is “On”

NOTE:

The engine-start effect exits when any of the above operational conditions is cancelled during the engine-start effect.

 

Signal Path

The combination meter judges “engine-start”, according to the following signals and activates the engine-start effect function.

Signal name	Signal source
Ignition signal	—
Engine status signal	ECM Combination meter
Nissan Pathfinder Vehicle speed display signal	ECM Combination meter
Starter relay status signal	IPDM E/R Combination meter

NOTE:

The engine-start effect function ends if any one of the above conditions is lost during the activation of this function.

 

Information Display

System Description

SYSTEM DIAGRAM

DESCRIPTION

• The combination meter receives signals necessary for controlling the operation of the information display from each unit, sensor and switch.

• The combination meter incorporates a trip computer that displays the warning/information according to the information received from each unit, sensor and switch.

• The combination meter shows the following functions on the information display:

  • Warning/Indicator

  • Odometer

  • Distance to empty

  • Warning confirmation

  • Setting

  • Trip computer

  • Ambient temperature

  • Clock

  • Meter illumination level

• The items that displayed on the information display can be selected by the steering switch and illumination control switch. For further details, Refer to Switch Name and Function.

ODOMETER

The combination meter calculates mileage, based on the following signals and displays the mileage on the information display:

Signal name	Signal path
Ignition signal	—
Odometer signal	ABS actuator and electric unit (control unit) Combination meter

Indication Range

Odometer

0 km - 999999 km

DISTANCE TO EMPTY

The combination meter calculates distance to empty based on the following signals, and the calculated value is displayed on the information display:

Signal name	Signal source
Ignition signal	—
Fuel level sensor signal	Fuel level sensor unit Combination meter
Fuel consumption monitor signal	ECM Combination meter
Nissan Pathfinder Vehicle speed display signal	ECM Combination meter

NOTE:

• Distance to empty on the information display is updated approximately every 30 seconds.

• When the ignition switch is turned ON right after battery removal and installation, “−−−” is displayed until after a travel of 30 seconds.

• The indicated values may not match each other when refueling with the ignition switch ON.

 

WARNING CONFIRMATION

• The combination meter can interrupt the information display to indicate a warning, based on signals received from each unit and switch.

• The indicated warning can be checked with “WARNING” during the satisfaction of an interrupt indication condition for each warning.

SETTINGS

The condition of following items can be set:

• VDC Setting

• Driver Assistance

• ECO Mode Setting

• TPMS Setting

• Clock

• Nissan Pathfinder Vehicle Settings

• Maintenance

• Customize Display

• Unit/Language

• Key-Linked Settings

• Factory Reset

TRIP COMPUTER

Current Fuel Consumption

The combination meter calculates current fuel consumption based on the following signals, and the calculated value is displayed on the information display:

Current fuel consumption can be compared with average fuel consumption.

Signal name	Signal source
Ignition signal	—
Fuel consumption monitor signal	ECM Combination meter
Nissan Pathfinder Vehicle speed display signal	ECM Combination meter

NOTE:

• Current fuel consumption on the information display is updated approximately every 0.1 seconds.

• Current fuel consumption on the information display shows 30 l/100km (0 mpg) when Nissan Pathfinder vehicle speed is 0 km/h (0 MPH).

 

Average Fuel Consumption

The combination meter calculates average fuel consumption based on the following signals, and the calculated value is displayed on the information display:

Signal name	Signal source
Ignition signal	—
Fuel consumption monitor signal	ECM Combination meter
Nissan Pathfinder Vehicle speed display signal	ECM Combination meter

NOTE:

• Average fuel consumption on the information display is updated approximately every 30 seconds.

• Soon after a reset or when the ignition switch is turned ON, “−−−” is displayed until after a travel of 30 seconds and approximately 500 m (0.31 mile).

 

Current Vehicle Speed

The combination meter calculates current vehicle speed based on the following signals, and the calculated value is displayed on the information display:

Signal name	Signal path
Ignition signal	—
Nissan Pathfinder Vehicle speed display signal	ECM Combination meter

NOTE:

Current vehicle speed on the information display is updated approximately every 0.3 seconds.

 

Average Vehicle Speed

The combination meter calculates the average vehicle speed based on the following signals, and the calculated value is displayed on the information display:

Signal name	Signal source
Ignition signal	—
Nissan Pathfinder Vehicle speed display signal	ECM Combination meter

NOTE:

• Average vehicle speed on the information display is updated approximately every 30 seconds.

• Soon after a reset, “−−−” is displayed until after 30 seconds.

 

Travel Time

The combination meter measures and displays travel time (ignition switch ON time).

Travel Distance

The combination meter measures and displays travel distance.

ECO Pedal Guide

The ECO pedal guide consists of Gauge 1 (displays accelerator pedal angle) and Gauge 2 (displays the guideline of ECO driving).

GAUGE1

• ECM corrects the accelerator pedal angle to the maximum angle for ECO driving, according to Nissan Pathfinder vehicle speeds.

  The maximum accelerator pedal angle increases/decreases as the vehicle speed increases/decreases.

  The maximum accelerator angle corrected by ECM is the limitation of ECO driving. The ECO driving is possible only when the number of unlit segments of the indicator bar is equal to or less than that of Gauge 2.

  The less the number of unlit segments of the indicator bar, the more the degree of ECO driving is. And the more the number of unlit segments, the less the degree of ECO driving is.

  

  ECM judges the number of lighting segments according to the accelerator pedal angle and Nissan Pathfinder vehicle speed and transmits a CAN communication signal to the combination meter via CAN communication.

  The combination meter indicates the number of segments necessary for the ECO pedal guide, according to an ECO pedal guide signal.

  NOTE:

  The combination meter corrects the number of lighting segments according to a Nissan Pathfinder vehicle speed signal.

   

GAUGE2

• The combination meter turns ON/OFF Gauge 2 (guide line for ECO driving) according to a vehicle speed signal.

  

ECO DRIVE INDICATOR

• The combination meter displays level of ECO drive in conjunction with ECO pedal guide.

  

Signal name		Signal path
Ignition signal		—
ECO pedal guide signal		ECM Combination meter

ECO Drive Report

• The ECO drive report is a function which displays the last drive report of average fuel consumption, present fuel economy (present value), and the best fuel economy (highest value) on the information display by calculating and recording average fuel consumption.

  

• The combination meter calculates the average fuel consumption according to the signal below, detects the status of ECO mode, and displays “ECO drive report” on the information display when the ignition switch is turned ON→OFF.

  Signal name	Signal path
  Ignition signal	—
  Fuel consumption monitor signal	ECM Combination meter
  Nissan Pathfinder Vehicle speed display signal	ECM Combination meter
  ECO mode indicator signal	ECM Combination meter

AMBIENT TEMPERATURE

The combination meter calculates ambient temperature based on the following signals, and the calculated value is displayed on the information display.

Signal name	Signal path
Ignition signal	—
Ambient sensor signal	Ambient sensor Combination meter
Nissan Pathfinder Vehicle speed display signal	ECM Combination meter

NOTE:

• The indicated temperature is corrected based on an ignition signal, ambient temperature detected by the ambient sensor, and Nissan Pathfinder vehicle speed signal. The indicated temperature is not raised under vehicle speed less than 20 km/h (12 MPH).

• The ambient sensor input value that is displayed on “Data Monitor” of CONSULT is the value before the correction. It may not match the indicated temperature on the information display.

• Depending on engine heat or heat on the road surfaces, an ambient temperature may be indicated higher than actual one.

 

CLOCK

The combination meter calculates time and displays it on the information display.

NOTE:

The settings screen of the information display allows the selection of time indication between 12-hour and 24-hour formats.

 

METER ILLUMINATION LEVEL

The combination meter displays the illuminance level of the back light on the information display by turning the illumination control switch.

Refer to System Description.

Head up Display

System Description

SYSTEM DIAGRAM

Head Up Display Unit Input Signal (CAN Communication Signal)

Transmit unit	Signal name
ADAS control unit 2	Display signal
ECM	ASCD status signal
BCM	Auto ACC status signal
	Nissan Pathfinder Vehicle status signal
ABS actuator and electric unit (control unit)	Odometer signal
Intelligent Key unit	User identification signal
IPDM E/R	Battery voltage signal
AV control unit	Key link activation status signal
Combination meter	Nissan Pathfinder Vehicle speed display signal
	HUD setting signal

AV Communication signal (Combination meter ⇒ Head Up Display Unit)

Transmit unit	Signal name
Combination meter	Navigation signal

DESCRIPTION

• The head up display (HUD) displays information on the vehicle speed and driving assistance system on the windshield glass, and supports safe driving by suppressing the burden due to the movement of the driver's eyes.

• The head up display unit receives necessary signals from each ECU via CAN communication and local communication.

Operation

• Ignition switch ON, pressing the head up display switch activates head up display.

• Head up display projects image on the windshield glass.

• Image focus on 2.1 m (6.89 ft) from driver's eye point.

1.	Head up display unit	2.	Windshield glass
A.	Virtual image display	B.	2.1 m (6.89 ft)
C.	Eye point

Structure

The head up display unit projects the image to the windshield glass by reflecting the image of the TFT liquid crystal display on the concave mirror. Also, by manipulating the angle of the concave mirror, the projection position on the windshield glass can be adjusted.

1.	Head up display unit	2.	Concave mirror	3.	Concave mirror
4.	TFT liquid crystal display
	: Projection path

Display Item

• The head up display (HUD) can display one or more of the following features:

• The head up display unit can cause an interruption on the HUD display to indicate a warning, based on signals received from each unit.

No.	Display		Description
1.	Interrupt display	ProPILOT Assist system warning display	Display ProPILOT Assist system display during ProPILOT Assist system operation
		AEB warning display	Display AEB warning display during AEB operation
		Turn by Turn display	Display arrows at intersection with navigation guidance and guide traveling direction
		Audio operation display	Display audio operation display during audio switch operation
2.	Message display		Displays various information for the driver Displays the operation request when the ProPILOT Assist system is operating
3.	Nissan Pathfinder Vehicle speed display		Always display the vehicle speed
4.	TSR system display		Display TSR system display during TSR system operation
5.	Driving Aids	ASCD display	Displays setting Nissan Pathfinder vehicle speed during ASCD operation
		ICC display	Displays information on setting Nissan Pathfinder vehicle speed and presence/absence of preceding vehicle during ICC operation
		ProPILOT Assist system display	Displays setting ProPILOT Assist system status during ProPILOT Assist system operation
		LDW system display	Displays LDW system display during LDW system operation
		I-LI system display	Display I-LI system display during I-LI system operation
		I-FCW system display	Display I-FCW display during I-FCW operation
6.	Turn by Turn display		Display arrows at intersection with navigation guidance and guide traveling direction

NOTE:

• The items displayed depend on vehicle specifications.

• When placing the ignition switch ON, only Nissan Pathfinder vehicle speed is displayed.

• Emergency information may display even if the head up display is turned off.

• The display position, display rotation, display brightness, and display setting adjustment of the head up display can be set on the setting screen of the combination meter. Refer to Switch Name and Function.

 

Automatic Dimming Function

The head up display unit reads the illuminance sensor value and adjusts the brightness of the display automatically.

NOTE:

The brightness of the display can be manually adjusted on the combination meter setting screen. Refer to Switch Name and Function.