Infiniti QX56 (Z62). Manual - part 941

 

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Infiniti QX56 (Z62). Manual - part 941

 

 

MWI-18

< SYSTEM DESCRIPTION >

SYSTEM

When recognizing an engine start, the combination meter controls the following items for producing the effect.
• Speedometer
• Tachometer
• Engine coolant temperature gauge
• Fuel gauge
• Engine oil pressure gauge
• Voltmeter
• Meter illumination

Meter and Illumination Operations During Engine-start Effect

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

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 follow-
ing operational conditions are all satisfied.

NOTE:
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.

DRIVER WELCOME FUNCTION

Control item

Operation

Speedometer

Sweeps the pointer.

Tachometer

Sweeps the pointer.

Engine coolant temperature gauge

Stops the pointer.

Fuel gauge

Stops the pointer.

Engine oil pressure gauge

Stops the pointer.

Voltmeter

Stops the pointer.

Meter illumination

Pointers

Turns on the illumination at the effect level.

Information display

Turns on the illumination at the normal brightness level.

Other than those above

Increases the brightness to the effect level in stages.

Condition

Ignition switch

ON position

Vehicle speed

Less than 1 km/h (0.6 MPH)

Engine state

Other than the time of cranking the engine

500 rpm or more

Information display
(SETTING)

The setting of “EFFECT” is “ON.”

Signal name

Signal path

Ignition signal

Starter relay status signal

BCM 

 Combination meter

Engine speed signal

ECM 

 Combination meter

Engine status signal

Vehicle speed signal

ABS actuator and electric unit (control unit) 

 Combination meter

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SYSTEM

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< SYSTEM DESCRIPTION >

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BCM transmits a meter ring illumination request signal to the illumination meter when all the following opera-
tional conditions are satisfied. When receiving the meter ring illumination request signal from BCM via CAM
communication, the combination meter increases illumination brightness of the combination meter to the set
brightness level in stages. After a certain period of time, the meter illumination gradually dims to be turned
OFF.

*: Close the driver side door with the intelligent key left inside the vehicle.

Timing Chart

INFORMATION DISPLAY

INFORMATION DISPLAY : System Diagram

INFOID:0000000006221716

Operational condition

Ignition switch

LOCK position

Driver door

Open

Close

*

JSNIA3099GB

JSNIA2997GB

MWI-20

< SYSTEM DESCRIPTION >

SYSTEM

INFORMATION DISPLAY : System Description

INFOID:0000000006221717

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.
- Odo/trip meter
- Shift position indicator
- Trip computer
- Interrupt indication
- Warning check indication
- Setting

ODO/TRIP METER

• The ABS actuator and electric unit (control unit) reads the rectangular wave signal provided by the wheel

sensor and transmits the vehicle speed signal to the combination meter via CAN communication. 

• The combination meter converts the vehicle speed signal received via CAN communication to mileage, and

it displays the accumulated mileage on the information display.

SHIFT POSITION INDICATOR

MANUAL MODE

• The combination meter receives the following signal and transmits the signal to TCM via CAN communica-

tion.

• TCM judges a shift position, manual mode, and manual mode information, based on a signal received from

the combination meter via CAN communication and transmits the following signals to the combination meter
via CAN communication.

• The combination meter activates the shift position indicator, and manual mode information, based on signals

received from TCM via CAN communication.

NOTE:
When receiving a manual mode shift refusal signal from TCM via CAN communication, the combination meter
blinks the shift position indicator lamp and allows the integrated buzzer to ring a beep tone. For further infor-
mation, refer to 

TM-54, "SHIFT PATTERN CONTROL : System Description"

.

NON-MANUAL MODE

• Combination meter inputs non-manual mode signal from A/T shift selector (manual mode switch), and trans-

mits the signals to TCM with CAN communication line.

• TCM transmits shift position signal to combination meter with CAN communication line.
• Combination meter indicates shift position when receiving shift position signal.

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.

Signal name

Signal path

Manual mode signal

A/T shift selector 

 Combination meter 

 TCM

Non-manual mode signal

Manual mode shift up signal

Manual mode shift down signal

Signal name

Signal path

Shift position signal

TCM  

Combination 

meter

Manual mode shift refusal signal

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< SYSTEM DESCRIPTION >

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NOTE:
• Current fuel consumption on the information display is updated approximately every 0.5 seconds.
• Current fuel consumption on the information display shows 0 l/100km (0 mpg) when 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 calcu-
lated value is displayed on the information display.

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 right after battery removal and installation, “

−−−

is displayed until after a travel of 30 seconds and approximately 500 m (0.31 mile).

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.

NOTE:
• Distance to empty on the information display is updated approximately every 30 seconds.
• When the ignition switch is turned from OFF to ON, “

−−−

” is displayed until after a travel of approximately

500 m (0.31 mile).

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

Average Vehicle Speed

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

NOTE:
• Average vehicle speed on the information display is updated approximately every 30 seconds.
• Soon after a reset or when the ignition switch is turned ON right after battery removal and installation, “

−−−

is displayed until after a 30 seconds.

Travel Time

Signal name

Signal path

Fuel consumption monitor signal

ECM 

 Combination meter

Vehicle speed signal

ABS actuator and electric unit (control unit) 

 Combination meter

Signal name

Signal path

Fuel consumption monitor signal

ECM  

Combination 

meter

Vehicle speed signal

ABS actuator and electric unit (control unit) 

 Combination meter

Signal name

Signal path

Fuel level sensor signal

Fuel level sensor unit 

 Combination meter

Fuel consumption monitor signal

ECM 

 Combination meter

Vehicle speed signal

ABS actuator and electric unit (control unit) 

 Combination meter

Signal name

Signal path

Ignition signal

Vehicle speed signal

ABS actuator and electric unit (control unit) 

 Combination meter

 

 

 

 

 

 

 

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