turn signal INFINITI QX56 2011 Factory Service Manual

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

MWI-22
< SYSTEM DESCRIPTION >
SYSTEM
The combination meter measures and displays travel time (ignition switch ON time).
Travel Distance
The combination meter calculates mileage, based on the following signals and displays the mileage on the
information display.
Ambient Temperature
 The combination meter corrects an indicated temperature, based on various signals.
 The combination meter calculates ambient air temperature based on the following signals, and the calcu-
lated value is displayed on the information display.
Correction Process (Temperature indicated soon after the ignition switch ON) A temperature indicated soon after the ignition switch is turned ON depends on the time from the ignition switch OFF to ON and a temperatur e detected by the ambient sensor.
When any condition described below is met, an ambient sensor-detected temperature is indicated.- Time from the ignition switch OFF to ON ≥ Predetermined time
- Sensor-detected temperature < Temperat ure at the last ignition switch OFF
Correction Process (Temperature at the Ignition switch ON) A temperature indicated when the ignition switch is ON depends on a vehicle speed, an ambient sensor-
detected temperature, and traveling time.
The temperature on the information display is corrected to an am bient sensor-detected temperature when the following condition
is met.
- Ambient sensor-detected temperature < Temperature on the information display
A temperature on the information display is no t updated when the following condition is met.
- Ambient sensor-detected temperature ≥ Temperature on the information display
- Vehicle speed ≤ 20 km/h (12 MPH)
A temperature on the information display slowly rises to an ambient sensor-detected temperature when the following condition is
met.
- Ambient sensor-detected temperature ≥ Temperature on the information display
- Vehicle speed ≥ 20 km/h (12 MPH)
A temperature on the information display rapidly rises to an ambient sensor-detected temperature when the following condition
is met.
- Ambient sensor-detected temperature ≥ Temperature on the information display
- Vehicle speed ≥ 20 km/h (12 MPH)
- When driving more than set time
A/C auto amp. connection recognition
 The combination meter judges the A/C auto amp. connection/disconnection, based on an A/C auto amp.
connection recognition signal to judge the presence/ absence of the ambient sensor power output.
NOTE:
 After an ignition switch is turned ON, “–––” is displayed until after a 2.5 seconds.
Signal name Signal path
Ignition signal —
Vehicle speed signal ABS actuator and electric unit (control unit) Combination meter
Signal name Signal path
Ignition signal —
Ambient sensor signal Ambient sensor Combination meter
A/C auto amp. connection recognition signal A/C auto amp. Combination meter
Vehicle speed signal ABS actuator and electric unit (control unit) Combination meter
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
DIAGNOSIS SYSTEM (COMBINATION METER)
MWI-33
< SYSTEM DESCRIPTION >
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*: DDS (hill descent control) NOTE:
Some items are not available according to vehicle specification.
SPECIAL FUNCTION
Special menu
W/L ON HISTORY
 Stores histories when warning/indicator lamp is turned on.
 “W/L ON HISTORY” indicates the “TIME” when the warning/ indicator lamp is turned on.
 The “TIME” above is:
- 0: The condition that the warning/indicator lamp has been turned on 1 or more times after starting the engine and waiting for 30 seconds.
- 1 - 39: The number of times the engine was restarted after the 0 condition.
- NO W/L ON HISTORY: Stores NO (0) turning on history of warning/indicator lamp.
NOTE:
 W/L ON HISTORY is not stored for approximately 30 seconds after the engine starts.
 Brake warning lamp does not store any history when the parking brake is applied or the brake fluid level gets
low.
Display Item
AT SFT DWN SW
[On/Off] Status of manual mode shift down switch.
PKB SW
[On/Off] Status of parking brake switch.
BUCKLE SW
[On/Off] Status of seat belt buckle switch (driver side).
BRAKE OIL SW
[On/Off] Status of brake fluid level switch.
A/C AMP CONN
[Off] This item is displayed, but cannot be monitored.
ENTER SW
[On/Off] Status of (ENTER) switch.
SELECT SW
[On/Off] Status of (SELECT) switch.
DISTANCE
[km] Value of distance to empty calculated by combination meter.
OUTSIDE TEMP
[ ° C or °F] Ambient temperature value converted from ambient sensor signal received from
ambient sensor.
NOTE:
This may not match with the temperature value indicated on the information dis-
play. (Because the information display value is a corrected value from the ambient
sensor input value.)
FUEL LOW SIG
[On/Off] Status of fuel level low warning signal to output to AV control unit via CAN com-
munication.
TOW MODE IND
[On/Off] Status of TOW mode indicator lamp judged from TOW mode indicator lamp signal
received from TCM with CAN communication line.
BUZZER
[On/Off] XBuzzer status (in the combination meter) is detected from the buzzer output signal
received from each unit via CAN communication and the warning output condition
of the combination meter.
Display item [Unit]
MAIN
SIGNALS Description
Display item Description
W/L ON HISTORY Lighting history of warning lamp and indicator lamp can be checked.
Revision: 2010 May2011 QX56

MWI
COMBINATION METERMWI-35
< ECU DIAGNOSIS INFORMATION >
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ECU DIAGNOSIS INFORMATION
COMBINATION METER
Reference ValueINFOID:0000000006221721
VALUES ON THE DIAGNOSIS TOOL
Monitor Item Condition Value/Status
SPEED METER
[km/h] Ignition switch
ON
While driving Input value of vehicle speed signal
(CAN communication signal)
NOTE:
655.35 is displayed when the malfunc-
tion signal is received
SPEED OUTPUT
[km/h] Ignition switch
ON
While driving Output value of vehicle speed signal
(CAN communication signal)
NOTE:
655.35 is displayed when the malfunc-
tion signal is received
ODO OUTPUT
[km/h or mph] Ignition switch
ON
—Output value of odometer signal (CAN
communication signal)
TACHO METER
[rpm] Ignition switch
ON
Engine running Input value of engine speed signal
(CAN communication signal)
NOTE:
8191.875 is displayed when the mal-
function signal is received
FUEL METER
[L] Ignition switch
ON
— Input value of fuel level sensor signal
W TEMP METER
[ ° C] Ignition switch
ON
—Input value of engine coolant tempera-
ture signal (CAN communication sig-
nal)
NOTE:
215 is displayed when the malfunction
signal is input
ABS W/L Ignition switch
ONABS warning lamp ON On
ABS warning lamp OFF Off
VDC/TCS IND Ignition switch
ONVDC OFF indicator lamp ON On
VDC OFF indicator lamp OFF Off
SLIP IND Ignition switch
ONVDC warning lamp ON On
VDC warning lamp OFF Off
BRAKE W/L Ignition switch
ONBrake warning lamp ON On
Brake warning lamp OFF Off
DOOR W/L Ignition switch
ONDoor open warning ON On
Other than the above Off
HI-BEAM IND Ignition switch
ONHigh-beam indicator lamp ON On
High-beam indicator lamp OFF Off
TURN IND Ignition switch
ONTurn signal indicator lamp ON On
Turn signal indicator lamp OFF Off
FR FOG IND Ignition switch
ONNOTE:
This item is displayed, but cannot be moni-
tored.
Off
RR FOG IND Ignition switch
ONNOTE:
This item is displayed, but cannot be moni-
tored.
Off
Revision: 2010 May2011 QX56

MWI-42
< ECU DIAGNOSIS INFORMATION >
COMBINATION METER
Fail-Safe
INFOID:0000000006221722
FA I L - S A F E
The combination meter activates the fail-safe contro l if CAN communication with each unit is malfunctioning.
37
(R/Y) Ground Non-manual mode signal Input Ignition
switch
ONSelector manual mode po-
sition
12 V
Other than the above 0 V
38
(L/W) Ground Manual mode shift down
signal InputIgnition
switch
ON Selector lever DOWN oper-
ation
0 V
Other than the above 12 V
39
(Y/B) Ground Manual mode shift up sig-
nal InputIgnition
switch
ON Selector lever UP operation 0 V
Other than the above 12 V
40
(G/W) Ground Manual mode signal Input Ignition
switch
ONSelector manual mode po-
sition
0 V
Other than the above 12 V
Te r m i n a l N o .
(Wire color) Description
ConditionVa l u e
(Approx.)
+ – Signal name Input/
Output
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
COMBINATION METERMWI-43
< ECU DIAGNOSIS INFORMATION >
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DTC IndexINFOID:0000000006221723
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
Display contents of CONSULT-III Diagnostic item is detected when... Refer to
CAN COMM CIRCUIT
[U1000] When combination meter is not transmitting or receiving CAN communication signal
for 2 seconds or more. MWI-59,
"Diagnosis
Procedure"
CONTROL UNIT (CAN)
[U1010]
When detecting error during the initial diagnosis of the CAN controller of combina-
tion meter. MWI-60, "Diagnosis
Procedure"
VEHICLE SPEED
[B2205]
The abnormal vehicle speed signal is input from the ABS actuator and electric unit
(control unit) for
2 seconds or more. MWI-61, "Diagnosis
Procedure"
ENGINE SPEED
[B2267]
If ECM continuously transmits abnormal engine speed signals for 2 seconds or
more. MWI-62, "Diagnosis
Procedure"
WATER TEMP
[B2268]
If ECM continuously transmits abnormal engine coolant temperature signals for 60
seconds or more. MWI-63, "Diagnosis
Procedure"
Revision: 2010 May2011 QX56

MWI
U1000 CAN COMM CIRCUITMWI-59
< DTC/CIRCUIT DIAGNOSIS >
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DTC/CIRCUIT DIAGNOSIS
U1000 CAN COMM CIRCUIT
DescriptionINFOID:0000000006221728
CAN (Controller Area Network) is a serial communication system for real time application. It is an on-vehicle
multiplex communication system with high data communi cation speed and excellent error detectability. Many
electronic control units are equipped onto vehicles, and each control unit shares information and links with
other control units during operation (not independent). In CAN communication, control units are connected
with two communication lines (CAN-H line, CAN-L line) allowing a high rate of information transmission with
less wiring. Each control unit transmits/receives data but selectively reads required data only.
CAN Communication Signal Chart. Refer to LAN-28, "
CAN COMMUNICATION SYSTEM : CAN Communica-
tion Signal Chart".
DTC LogicINFOID:0000000006221729
DTC DETECTION LOGIC
Diagnosis ProcedureINFOID:0000000006221730
1.PERFORM SELF DIAGNOSTIC
1. Turn ignition switch ON and wait for 2 seconds or more.
2. Check “Self Diagnostic Result” of “METER/M&A”.
Is
“CAN COMM CIRCUIT” displayed?
YES >> Refer to LAN-18, "Trouble Diagnosis Flow Chart".
NO >> Refer to GI-40, "
Intermittent Incident".
DTCDisplay contents of
CONSULT-III Diagnostic item is detected when... Probable malfunction location
U1000 CAN COMM CIRCUIT When combination meter is not transmitting or
receiving CAN communication signal for 2
seconds or more.
CAN communication system
Revision: 2010 May2011 QX56

MWI
TRIP RESET AND ILLUMINATION CONTROL SWITCH SIGNAL CIRCUIT
MWI-65
< DTC/CIRCUIT DIAGNOSIS >
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TRIP RESET AND ILLUMINATION CO NTROL SWITCH SIGNAL CIRCUIT
Diagnosis ProcedureINFOID:0000000006221744
1.CHECK COMBINATION METER INPUT SIGNAL
1. Turn ignition switch ON.
2. Measure voltage between the following terminals of the combination meter.
Is the inspection result normal?
YES >> INSPECTION END
NO >> GO TO 2.
2.CHECK TRIP RESET AND ILLUMINATION CONTROL SWITCH SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect combination meter connector and trip reset and illumination control switch connector.
3. Check continuity between combination meter harness connector and trip reset and illumination control switch harness connector.
4. Check continuity between combination meter harness connector and ground.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair harness or connector.
3.CHECK TRIP RESET AND ILLUMINATI ON CONTROL SWITCH GROUND CIRCUIT
Check continuity between trip reset and i llumination control switch connector and ground.
(+) (−)
Condition Voltag e
(Approx.)
Combination meter
Ground
Connector Terminals
M34 8
When trip reset switch is pressed 0 V
Other than the above 5 V
13 When illumination control switch (+) is pressed 0 V
Other than the above 5 V
14 When illumination control switch (
−) is pressed 0 V
Other than the above 5 V
Te r m i n a l s Continuity
Combination meter Trip reset and illumination control switch
Connector Terminal Connector Terminal
M34 8
M83 5
Existed
13 3
14 4
Combination meter GroundContinuity
Connector Terminal
M34 8
Not existed
13
14
Trip reset and illumination control switch
GroundContinuity
Connector Terminal
M83 6 Existed
Revision: 2010 May2011 QX56

MWI-66
< DTC/CIRCUIT DIAGNOSIS >
TRIP RESET AND ILLUMINATION CONTROL SWITCH SIGNAL CIRCUIT
Is the inspection result normal?
YES >> INSPECTION END
NO >> Repair harness or connector.
Component InspectionINFOID:0000000006221745
1.CHECK TRIP RESET AND ILLUMINATION CONTROL SWITCH
1. Turn ignition switch OFF.
2. Disconnect trip reset and illumination control switch connector.
3. Check trip reset and illumination control switch.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace trip reset and illumination control switch. Refer to MWI-86, "
Removal and Installation".
Te r m i n a l s
Condition Continuity
Trip reset and illumina-
tion control switch
5
6When trip reset switch is pressed Existed
Other than the above Not existed
3 When illumination control switch (+) is pressed Existed
Other than the above Not existed
4 When illumination control switch (
−) is pressed Existed
Other than the above Not existed
Revision: 2010 May2011 QX56