2011 INFINITI QX56 fuel consumption

LAN-28
< SYSTEM DESCRIPTION >[CAN]
SYSTEM
Check CAN system type from the vehicle shape and equipment.
CAN COMMUNICATION SYSTEM : CA
N Communication Signal ChartINFOID:0000000006220533
Refer to LAN-17, "How to Use CAN Communication Signal Chart" for how to use CAN communication signal
chart.
T: Transmit R: Receive
1. ICC sensor
A. With ICC system
JSMIA0342ZZ
Signal nameECM
4WD
ABS
TCM
A-BAG
AFSAV
BCM
CGW
HVAC
M&A
STRG
TPMS
IPDM-E ADP
PSB
E-SUS ICC
PWBD
A/C compressor request
signal TR
Accelerator pedal position
signal TRRR
R
ASCD OD cancel request
signal TR
ASCD operation signal T R
ASCD status signal T R
Closed throttle position sig-
nal TR
R
Cooling fan speed request
signal TR
Engine and A/T integrated
control signal TR
RT
Engine coolant temperature
signal TRR
Engine restart request sig-
nal TRR
TR
Engine speed signal T R R R R R R R
Engine status signal T R R R
Engine torque signal T R
Fuel consumption monitor
signal TRR
ICC brake switch signal T R
ICC prohibition signal T R
ICC steering switch signal T R
Malfunctioning indicator
lamp signal TR
N idle instruction signal TR
RT
Revision: 2010 May2011 QX56

MWI
COMPONENT PARTSMWI-7
< SYSTEM DESCRIPTION >
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METER SYSTEM : Com ponent DescriptionINFOID:0000000006221691
CLOCK
Unit Description
Combination meter Controls the following with the signals received from each unit via CAN communication and the sig-
nals from switches and sensors.
 Speedometer
 Tachometer
 Engine coolant temperature gauge
 Fuel gauge
 Engine oil pressure gauge
 Voltmeter
 Warning lamps
 Indicator lamps
 Meter illumination control
 Meter effect function
 Information display
Trip computer switch Transmits the following signals to the combination meter.
 Enter switch signal
 Select switch signal
Trip reset and illumination con-
trol switch Transmits the following signals to the combination meter.
 Trip reset switch signal
 Illumination control switch signal (+)
 Illumination control switch signal (
−)
ECM Transmits the following signals to the combination meter via CAN communication.
 Engine speed signal
 Engine coolant temperature signal
 Engine status signal
 Fuel consumption monitor signal
ABS actuator and electric unit
(control unit) Transmits the vehicle speed signal to the combination meter via CAN communication.
IPDM E/R Transmits the oil pressure switch signal to the BCM via CAN communication.
BCM Transmits the following signals to the combination meter via CAN communication.
 Oil pressure switch signal
 Position light request signal
 Dimmer signal
 Door switch signal
 Meter ring illumination request signal
 Starter relay status signal
TCM Transmits the shift position signal to the combination meter via CAN communication.
A/T shift selector Transmits the following signals to the combination meter.
 Manual mode signal
 Non-manual mode signal
 Manual mode shift up signal
 Manual mode shift down signal
Fuel level sensor unit Transmits the fuel level sensor signal to the combination meter.
Oil pressure switch Transmits the oil pressure switch signal to the IPDM E/R.
Ambient sensor Transmits the ambient sensor signal to the combination meter.
A/C auto amp. Transmits the A/C auto amp. connection recognition signal to the combination meter.
Parking brake switch Transmits the parking brake switch signal to the combination meter.
Washer level switch Transmits the washer level switch signal to the combination meter.
Revision: 2010 May2011 QX56

MWI
SYSTEMMWI-11
< SYSTEM DESCRIPTION >
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ARRANGEMENT OF COMBINATION METER
Information
display Odo/trip meter Displays mileage.
MWI-20, "
INFOR-
MATION DIS-
PLAY : System
Description"
Shift position indicator Displays shift position.
Trip computerCurrent fuel consumption Displays current fuel consumption.
Average fuel consumption Displays average fuel consumption.
Distance to empty Displays distance to empty.
Average vehicle speed Displays average vehicle speed.
Travel time Displays travel time.
Travel distance Displays mileage.
Ambient temperature Displays ambient temperature.
Interrupt indi-
cation Warning
Door open
warning
Warns when a door is open.
Parking brake
release warning Warns if traveling when the parking brake is
under operating condition.
Low fuel warn-
ing Warns when being low on fuel.
Low washer flu-
id warning Displayed/Hidden, depending on washer
fluid level.
Alert Travel time
Causes an interrupt when exceeding ran-
domly set time.
Low ambient
temperature Causes an interrupt when ambient tempera-
ture reaches below 3
°C (37 °F).
Maintenance Tire
Causes an interrupt when exceeding ran-
domly set distance.
Oil filter Causes an interrupt when exceeding ran-
domly set distance.
Engine oil Causes an interrupt when exceeding ran-
domly set distance.
Other Causes an interrupt when exceeding ran-
domly set distance.
Meter illumination level Indicates the brightness of the meter illumi-
nation in stages.
Setting Alert
Timer
Allows the user to set a display time for
“Travel time”.
ICY Allows the ON/OFF setting of the low ambi-
ent temperature (alert) function.
Maintenance Tire
Alerts when reaching mileage set in “SET-
TING”.
Filter Alerts when reaching mileage set in “SET-
TING”.
Oil Alerts when reaching mileage set in “SET-
TING”.
Other Alerts when reaching mileage set in “SET-
TING”.
Options Language
Allows the user to set language for informa-
tion display.
Unit Allows unit settings.
Effects Allows the ON/OFF setting of the engine-
start effect function.
System Description Reference
Revision: 2010 May2011 QX56

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 t hat 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) r eads 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 transmi ts 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 cons umption 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
Revision: 2010 May2011 QX56

MWI
SYSTEMMWI-21
< SYSTEM DESCRIPTION >
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O PNOTE:
 Current fuel consumption on the information di splay is updated approximately every 0.5 seconds.
 Current fuel consumption on the information displa y shows 0 l/100km (0 mpg) when vehicle speed is 0 km/h
(0 MPH).
Average Fuel Consumption
The combination meter calculates average fuel c onsumption 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 disp lay 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
Revision: 2010 May2011 QX56