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
MWI-19
< 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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MWI-21
< 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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