2011 INFINITI QX56 oil pressure

MWI-12
< SYSTEM DESCRIPTION >
SYSTEM
METER SYSTEM : Fail-Safe
INFOID:0000000006221695
FA I L - S A F E
The combination meter activates the fail-safe contro l if CAN communication with each unit is malfunctioning.
A. With ASCD models B. With ICC models C. For U.S.A.
D. For Canada
JSNIA3234ZZ
Function Specifications
Speedometer
Reset to zero by suspending communication.
Tachometer
Engine coolant temperature gauge
Engine oil pressure gauge
Illumination control When suspending communication, changes to nighttime mode.
Information display Odo/trip meter An indicated value is maintained at communications blackout.
Shift position indicator The display turns OFF by suspending communication.
Door open warning The display turns OFF by suspending communication.
Buzzer The buzzer turns OFF by suspending communication.
Revision: 2010 May2011 QX56

MWI
SYSTEMMWI-13
< SYSTEM DESCRIPTION >
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SPEEDOMETER
SPEEDOMETER : System DiagramINFOID:0000000006221696
SPEEDOMETER : System DescriptionINFOID:0000000006221697
 The ABS actuator and electric unit (control unit) conv erts the rectangular wave signal provided by the wheel
sensor to a vehicle speed signal and transmits it to the combination meter via CAN communication.
 The combination meter indicates the vehicle speed to the speedometer according to the vehicle speed sig-
nal received via CAN communication.
TACHOMETER
Warning lamp/indicator lamp ABS warning lamp
The lamp turns ON by suspending communication.
VDC warning lamp
Brake warning lamp
IBA OFF indicator lamp
4WD warning lamp
Malfunction indicator lamp
VDC OFF indicator lamp
CRUISE warning lamp
Low tire pressure warning lamp The lamp blinking caused by suspending communication.
High beam indicator lamp
The lamp turns OFF by suspending communication.
Turn signal indicator lamp
Tail lamp indicator lamp
A/T CHECK indicator lamp
Key warning lamp
AT P w a r n i n g l a m p
Lane departure warning lamp
LDP ON indicator lamp
CRUISE indicator lamp
Oil pressure warning lamp
SNOW mode indicator lamp
TOW mode indicator lamp
CK SUSP indicator lamp
BSW indicator lamp
Function Specifications
JSNIA2382GB
Revision: 2010 May2011 QX56

MWI
SYSTEMMWI-15
< SYSTEM DESCRIPTION >
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REFUEL CONTROL
The combination meter accelerates the fuel gauge if the all conditions listed below are met, or the ignition
switch is ON from OFF.
 Ignition switch is ON position.
 The vehicle is not moving.
 The fuel level change by 15 (4 US gal, 3-1/4 Imp gal) or more.
ENGINE OIL PRESSURE GAUGE
ENGINE OIL PRESSURE GAUGE : System DiagramINFOID:0000000006221704
ENGINE OIL PRESSURE GAUGE : System DescriptionINFOID:0000000006221705
 IPDM E/R reads the ON/OFF signals from the oil pressure switch and transmits the oil pressure switch sig-
nal to the combination meter via BCM with the CAN communication.
 The combination meter indicates engine oil pressure (Normal/Low) on the engine oil pressure gauge, based
on an oil pressure switch signal received via CAN communication.
VOLTMETER
VOLTMETER : System DiagramINFOID:0000000006221706
VOLTMETER : System DescriptionINFOID:0000000006221707
The combination meter reads the voltage of an ignition signal and indicates the voltage on the voltmeter when
the ignition switch is in ON or START position.
OIL PRESSURE WARNING LAMP
OIL PRESSURE WARNING LAMP : System DiagramINFOID:0000000006221708
JSNIA2998GB
JSNIA2996GB
JSNIA2464GB
Revision: 2010 May2011 QX56

MWI-16
< SYSTEM DESCRIPTION >
SYSTEM
OIL PRESSURE WARNING LAMP : System Description
INFOID:0000000006221709
 IPDM E/R reads the ON/OFF signals fr om the oil pressure switch and transmits the oil pressure switch sig-
nal to the combination meter via BCM with the CAN communication.
 The combination meter turns the oil pressure warning lamp ON (at the time of a reduction in hydraulic pres-
sure)/OFF (except at the time of a reduction in hydraulic pressure) according to the oil pressure switch signal
received via CAN communication.
MASTER WARNING LAMP
MASTER WARNING LAMP : System DiagramINFOID:0000000006221710
MASTER WARNING LAMP : System DescriptionINFOID:0000000006221711
When receiving a signal from each unit, switch, or s ensor, the combination meter turns ON/OFF the master
warning lamp in synchronization with the following warnings on the information display:
 Door open warning
 Parking brake release warning
 Low fuel warning
 Low washer fluid warning
 NO KEY warning
NOTE:
For details on warnings displayed on the vehicle information display, refer to MWI-20, "
INFORMATION DIS-
PLAY : System Description".
METER ILLUMINATION CONTROL
METER ILLUMINATION CONTROL : System DiagramINFOID:0000000006221712
METER ILLUMINATION CONTRO L : System DescriptionINFOID:0000000006221713
METER ILLUMINATION ON/OFF CONTROL FUNCTION
 Combination meter turns ON meter illumination when the following condition is satisfied:
- Ignition switch ON
 Combination meter turns OFF meter illumination when any of the following condition is satisfied:
JSNIA3098GB
JSNIA3235GB
Revision: 2010 May2011 QX56

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 operat ional 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
Revision: 2010 May2011 QX56

MWI
DIAGNOSIS SYSTEM (COMBINATION METER)
MWI-29
< SYSTEM DESCRIPTION >
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DIAGNOSIS SYSTEM (COMBINATION METER)
On Board Diagnosis FunctionINFOID:0000000006221719
ON BOARD DIAGNOSIS ITEM
The combination meter allows the following diagnosis items with the on-board diagnosis function.
METHOD OF STARTING
1. Turn ignition switch OFF.
2. While pressing the trip reset switch (1), turn ignition switch ON.
3. If the diagnosis function is activated with “trip A” displayed, the
mileage on “trip A” is reset to “0000.0”. (The same way for “trip
B”.)
4. Make sure that the trip meter displays “0000.0”.
5. Press the trip reset switch at least 3 times. (Wit hin 7 seconds after the ignition switch is turned ON.)
6. The combination meter is turned to self-diagnosis mode.  Speedometer, tachometer, engine coolant temper ature gauge, fuel gauge, engine oil pressure gauge,
and voltmeter return to zero, simultaneously.
 The dot matrix dots on the information display (1) blink alter-
nately.
NOTE:
 Check combination meter power supply and ground circuit when the self-diagnosis mode of the combi- nation meter does not start. Replace combination meter if power supply and ground circuit are normal.
 If any of the dots are not displayed, replace combination meter.
Diagnosis item
Drive circuit check  Speedometer
 Tachometer
 Engine coolant temperature gauge
 Fuel gauge
 Engine oil pressure gauge
 Voltmeter
LCD (liquid crystal display) check Information display
JSNIA2978ZZ
JSNIA0020GB
Revision: 2010 May2011 QX56

MWI
DIAGNOSIS SYSTEM (COMBINATION METER)
MWI-31
< SYSTEM DESCRIPTION >
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W TEMP METER
[ ° C] XValue of engine coolant temperature signal is received from ECM via CAN com-
munication.
NOTE:
215 is displayed when the malfunction signal is input.
ABS W/L
[On/Off] Status of ABS warning lamp detected fr
om ABS warning lamp signal is received
from ABS actuator and electric unit (control unit) via CAN communication.
VDC/TCS IND
[On/Off] Status of VDC OFF indicator lamp detected from VDC OFF indicator lamp signal
is received from ABS actuator
and electric unit (control unit) via CAN communica-
tion.
SLIP IND
[On/Off] Status of VDC warning lamp detected from VDC warning lamp signal received
from ABS actuator and electric unit (control unit) via CAN communication.
BRAKE W/L
[On/Off] Status of brake warning lamp detected from brake warning lamp signal is received
from ABS actuator and electric unit (control unit) via CAN communication.
NOTE:
Displays “Off” if the brake warning lamp is illuminated when the valve check starts,
the parking brake switch is turned ON or the brake fluid level switch is turned ON.
DOOR W/L
[On/Off] Status of door open warning detected from door switch signal received from BCM
via CAN communication.
HI-BEAM IND
[On/Off] Status of high beam indicator lamp detected from high beam request signal is re-
ceived from BCM via CAN communication.
TURN IND
[On/Off] Status of turn indicator lamp detected from turn indicator signal is received from
BCM via CAN communication.
FR FOG IND
[Off] This item is displayed, but cannot be monitored.
RR FOG IND
[Off] This item is displayed, but cannot be monitored.
LIGHT IND
[On/Off] Status of light indicator lamp detected from position light request signal is received
from BCM via CAN communication.
OIL W/L
[On/Off] Status of oil pressure warning lamp detected from oil pressure switch signal is re-
ceived from BCM via CAN communication.
MIL
[On/Off] Status of malfunction indicator lamp detected from malfunctioning indicator lamp
signal is received from ECM via CAN communication.
GLOW IND
[Off] This item is displayed, but cannot be monitored.
CRUISE IND
[On/Off]  Status of CRUISE indicator detected from ASCD status signal is received from
ECM via CAN communicat ion. (ASCD models)
 Status of CRUISE indicator de tected from meter display signal is received from
ADAS control unit via CAN communication. (ICC models)
SET IND
[On/Off] Status of SET indicator detected from meter display signal is received from ADAS
control unit via CAN communication.
CRUISE W/L
[On/Off] Status of CRUISE warning lamp
judged from ICC warning lamp signal received
from ADAS control unit with CAN communication line.
BA W/L
[On/Off] Status of IBA OFF indicator lamp judged from IBA OFF indicator lamp signal re-
ceived from ADAS control unit with CAN communication line.
ATC/T-AMT W/L
[On/Off] Status of A/T CHECK warning lamp judged
from A/T CHECK indicator lamp signal
received from TCM with CAN communication line.
ATF TEMP W/L
[Off] This item is displayed, but cannot be monitored.
4WD W/L
[On/Off] Status of 4WD warning lamp judged from 4WD warning lamp signal received from
4WD control unit with
CAN communication line.
FUEL W/L
[On/Off] Low-fuel warning lamp status detected by the identified fuel level.
WASHER W/L
[On/Off] Status of low washer fluid warning judged from washer level switch input to com-
bination meter.
Display item [Unit]
MAIN
SIGNALS Description
Revision: 2010 May2011 QX56

MWI-34
< SYSTEM DESCRIPTION >
DIAGNOSIS SYSTEM (COMBINATION METER)
Display item Description
ABS W/L Lighting history of ABS warning lamp.
VDC/TCS IND Lighting history of VDC OFF indicator lamp.
SLIP IND Lighting history of VDC warning lamp.
BRAKE W/L Lighting history of brake warning lamp.
DOOR W/L Lighting history of door open warning.
TRUNK/GLAS-H This item is displa yed, but cannot be monitored.
OIL W/L Lighting history of oil pressure warning lamp.
C-ENG W/L Lighting history of malfunction indicator lamp.
C-ENG2 W/L This item is displayed, but cannot be monitored.
CRUISE IND Lighting history of CRUISE indicator lamp.
SET IND Lighting history of SET indicator lamp.
CRUISE W/L Lighting history of CRUISE warning lamp.
BA W/L Lighting history of IBA OFF indicator lamp.
O/D OFF IND This item is displayed, but cannot be monitored.
ATC/T-AMT W/L Lighting history of A/T CHECK warning lamp.
ATF TEMP W/L This item is displayed, but cannot be monitored.
CVT IND This item is displayed, but cannot be monitored.
SPORT IND This item is displayed, but cannot be monitored.
4WD W/L Lighting history of 4WD warning lamp.
FUEL W/L Lighting history of low fuel level warning.
WASHER W/L Lighting history of low washer fluid warning.
AIR PRES W/L Lighting history of low tire pressure warning lamp.
KEY G/Y W/L Lighting history of KEY warning lamp.
KEY R W/L This item is displaye d, but cannot be monitored.
KEY KNOB W/L This item is displa yed, but cannot be monitored.
EPS W/L This item is displayed, but cannot be monitored.
e-4WD This item is displayed, but cannot be monitored.
AFS OFF IND This item is displayed, but cannot be monitored.
4WAS/RAS W/L This item is displayed, but cannot be monitored.
HDC W/L This item is displayed, but cannot be monitored.
SYS FAIL W/L This item is displa yed, but cannot be monitored.
SFT POSI W/L This item is displayed, but cannot be monitored.
HV BAT W/L This item is displayed, but cannot be monitored.
HEV BRAKE W/L This item is displayed, but cannot be monitored.
SFT OPER W/L This item is displayed, but cannot be monitored.
LANE W/L Lighting history of lane departure warning lamp.
CHAGE W/L This item is displayed, but cannot be monitored.
OIL LEV LOW This item is displayed, but cannot be monitored.
DPF W/L This item is displayed, but cannot be monitored.
TRAILER IND This item is displayed, but cannot be monitored.
RUN FLAT W/L This item is displa yed, but cannot be monitored.
E-SUS W/L This item is displayed, but cannot be monitored.
LAUNCH CNT W/L This item is displayed, but cannot be monitored.
BRAKE PAD W/L This item is displa yed, but cannot be monitored.
Revision: 2010 May2011 QX56