2011 INFINITI QX56 ABS

WCS-4
< SYSTEM DESCRIPTION >
COMPONENT PARTS
SYSTEM DESCRIPTION
COMPONENT PARTS
Component Parts LocationINFOID:0000000006222537
Component DescriptionINFOID:0000000006222682
1. Parking brake switch 2. ABS actuator and electric unit (con-
trol unit)
Refer to BRC-10, "
Component Parts
Location". 3. BCM
Refer to BCS-4, "
BODY CONTROL
SYSTEM : Component Parts Loca-
tion".
4. Combination meter 5. Seat belt buckle switch (driver side)
JSNIA3313ZZ
Unit Description
Combination meter  Receives a buzzer output signal from the BCM with CAN communication line and sounds the
buzzer.
 Judges whether the parking brake is released from the vehicle speed signal received from the ABS actuator and electric unit (control unit) with CAN commun ication line and the parking
brake switch signal from the parking brake switch, and sounds the buzzer if necessary.
BCM Based on the signals received from various units and switches, transmits the buzzer output sig-
nal to the combination meter via CAN communication.
ABS actuator and electric unit
(control unit) Transmits the vehicle speed signal to the combination meter via CAN communication.
Parking brake switch Transmits the parking brake switch signal to the combination meter.
Seat belt buckle switch (driver
side) Transmits the seat belt buckle switch signal (driver side) to the combination meter.
Revision: 2010 May2011 QX56

WCS-8
< SYSTEM DESCRIPTION >
SYSTEM
LIGHT REMINDER WARNING CHIME
LIGHT REMINDER WARNING CHIME : System DiagramINFOID:0000000006222543
LIGHT REMINDER WARNING CHIME : System DescriptionINFOID:0000000006222544
WARNING CHIME OPERATION CONDITIONS
If all of the following conditions are fulfilled.
WARNING CHIME CANCEL CONDITIONS
Warning lamp/indicator lampABS 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
ATP warning lamp
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
JSNIA2421GB
Operation conditions
Ignition switch OFF or ACC position
Combination switch (Lighting
switch) 1st or 2nd position
Driver door Open [front door switch (driver side) ON]
Revision: 2010 May2011 QX56

WCS
SYSTEMWCS-13
< SYSTEM DESCRIPTION >
C
DE
F
G H
I
J
K L
M B A
O PSIGNAL PATH
Combination meter sounds integrated buzzer when it judges that parking brake release warning chime is nec-
essary from signals below.
TIMING CHART
SOUND SPECIFICATION
Operation conditions
Ignition switch OFF
Parking brake Release condition (parking brake switch OFF)
Vehicle speed Approximately 3 km/h (1.9 MPH) or less
Signal name Signal path
Ignition switch signal —
Parking brake switch signal Parking brake switch Combination meter
Vehicle speed signal ABS actuator and electric unit (control unit) Combination meter
JSNIA2428GB
JSNIA3139GB
Revision: 2010 May2011 QX56

WCS-14
< SYSTEM DESCRIPTION >
DIAGNOSIS SYSTEM (COMBINATION METER)
DIAGNOSIS SYSTEM (COMBINATION METER)
CONSULT-III FunctionINFOID:0000000006222742
CONSULT-III APPLICATION ITEMS
CONSULT-III can perform the following diagnosis modes via CAN communication and the combination meter.
SELF DIAG RESULT
Refer to MWI-43, "DTC Index".
DATA MONITOR
Display Item List
X: Applicable
System Diagnosis mode Description
METER/M&A Self Diagnostic Result The combination meter checks the conditions and displays memorized errors.
Data Monitor Displays the combination meter input/output data in real time.
Special function Lighting history of the warning lamp and indicator lamp can be checked.
Display item [Unit]
MAIN
SIGNALS Description
SPEED METER
[km/h] XValue of vehicle speed
signal received from ABS actuator and el ectric unit (control
unit) via CAN communication.
NOTE:
655.35 is displayed when the malfunction signal is received.
SPEED OUTPUT
[km/h] XVehicle speed signal value transmitted to other units via CAN communication.
NOTE:
655.35 is displayed when the malfunction signal is received.
ODO OUTPUT
[km/h or mph] Odometer signal value transmitted to other units via CAN communication.
TACHO METER
[rpm] XValue of the engine speed signal received from ECM via CAN communication.
NOTE:
8191.875 is displayed when the malfunction signal is received.
FUEL METER
[L] X Fuel level indicated on combination meter.
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 from 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.
Revision: 2010 May2011 QX56

WCS
DIAGNOSIS SYSTEM (COMBINATION METER)
WCS-17
< SYSTEM DESCRIPTION >
C
D E
F
G H
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M B A
O P
*: 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
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.
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 displayed, 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 histor y 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.
Revision: 2010 May2011 QX56

WCS-22
< ECU DIAGNOSIS INFORMATION >
COMBINATION METER
ECU DIAGNOSIS INFORMATION
COMBINATION METER
Reference ValueINFOID:0000000006222688
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

WCS-30
< ECU DIAGNOSIS INFORMATION >
COMBINATION METER
DTC Index
INFOID:0000000006222690
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
ATP warning lamp
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 sp
eed 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

WT-6
< SYSTEM DESCRIPTION >
COMPONENT PARTS
SYSTEM DESCRIPTION
COMPONENT PARTS
Component Parts LocationINFOID:0000000006225488
1. BCMRefer to BCS-4, "
BODY CONTROL
SYSTEM : Component Parts Loca-
tion". 2. AV control unit
Refer to AV- 9 , "
Component Parts Lo-
cation". 3. ABS actuator and electric unit (con-
trol unit)
Refer to BRC-10, "Component Parts
Location".
4. TCM
*
Refer to TM-10, "A/T CONTROL SYS-
TEM : Component Parts Location" .5. Low tire pressure warning control
unit 6. Transmitter
7. Front tire pressure receiver 8. Rear tire pressure receiver
A. Glove box assembly removed B. Wheel C. Fender protector (rear side)
D. Low tire pressure warning lamp (in
combination meter) E. Inside rear wheel house protector
*: Mainly used for the tire inflation indicator function.
JPEIC0069ZZ
Revision: 2010 May2011 QX56