2008 INFINITI QX56 Factory Service Manual

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INFINITI QX56 2008 Factory Service Manual WCS-12
< FUNCTION DIAGNOSIS >
DIAGNOSIS SYSTEM (METER)
DIAGNOSIS SYSTEM (METER)
Diagnosis DescriptionINFOID:0000000004872660
SELF-DIAGNOSIS MODE
The following items can be checked during Combination M

WCS-12
< FUNCTION DIAGNOSIS >
DIAGNOSIS SYSTEM (METER)
DIAGNOSIS SYSTEM (METER)
Diagnosis DescriptionINFOID:0000000004872660
SELF-DIAGNOSIS MODE
The following items can be checked during Combination Meter Self-Diagnosis Mode.
• Gauge sweep and present gauge values.
• Illuminates all odometer/trip meters and A/T indicator segments.
• Illuminates all micro controlled lamps/LEDs regardless of switch position.
• Displays estimated present battery voltage.
• Displays seat belt buckle switch LH status.
OPERATION PROCEDURE
NOTE:
• Once entered, combination meter self-diagnosis mode will function with the ignition switch in ON or START.
Combination meter self-diagnosis mode will exit upon turning the ignition switch to OFF or ACC.
• If the diagnosis function is activated with trip A displa yed, the mileage on trip A is reset to 0000.0. (Trip B
operates the same way.)
To initiate combination meter self-diagnosis mode, refer to the following procedure.
1. Turn the ignition switch ON, while pressing the odometer/trip meter switch for 5 - 8 \
seconds. When the diagnosis function is activated, the odometer/trip meter will display tESt.
NOTE:
Check combination meter power supply and ground circuit when self-diagnosis mode of combination meter
does not start. Refer to MWI-30, "
COMBINATION METER : Diagnosis Procedure". Replace combination
meter if normal. Refer to MWI-76, "
Removal and Installation".
COMBINATION METER SELF-DIAGNOSIS MODE FUNCTIONS
To interpret combination meter self-diagnosis mode functions, refer to the following table.
EventOdometer Display Description of Test/Data Notes:
Odometer/trip meter A/B
switch held from 5 to 8
seconds (or until re-
leased) tESt
Initiating self-diagnosis mode
Switch released GAGE Performs sweep of all
gauges, then displays
present gauge values.Gauges sweep within 10 seconds
Switch pressed (All segments illuminated) Lights all LCD segments.
Compare with picture.
Switch pressed bulbIlluminates all micro-con-
trolled lamps/LEDs. Part may not be configured for all
lamps (functions) th
at turn on dur-
ing test. This is normal.
Switch pressed r XXXX, FAIL Return to normal opera-
tion of all lamps/LEDs and
displays “r XXXX”.If a malfunction exists, “FAIL” will
flash.
Switch pressed nrXXXX Displays Hex ROM rev as
stored in NVM.
Switch pressed EE XX, FAIL Displays “EE XX”.If a malfunction exists, “FAIL” will
flash.
Switch pressed dtXXXX Hex coding of final manu-
facturing test date.
AWNIA0203ZZ
Revision: March 2010
2008 QX56

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INFINITI QX56 2008 Factory Service Manual WCS
DIAGNOSIS SYSTEM (METER)WCS-13
< FUNCTION DIAGNOSIS >
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CONSULT-III Function (METER/M&A)INFOID:0000000004872661
CONSULT-III can display each diagnostic item us ing the d

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DIAGNOSIS SYSTEM (METER)WCS-13
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CONSULT-III Function (METER/M&A)INFOID:0000000004872661
CONSULT-III can display each diagnostic item us ing the diagnostic test modes shown following.
SELF-DIAG RESULTS
Display Item List
Refer to MWI-62, "DTC Index".
DATA MONITOR
Display Item List
Switch pressed
(3 times) Sc1 XX through Epr XXDisplays 8 bit software
configuration value in Hex
format
Switch pressed 1nF XXDisplays 8-bit market info
value in Hex format. $31 = USA
$2A = Canada
Switch pressed
(3 times) cYL XX through tF N/A
Switch pressed XXXXX “Corrected” speed value
in hundredths of MPH.
Gauge indication may be
slightly higher. This is nor-
mal.Will display “-----” if message is not
received. Will display “99999” if
data received is invalid.
Switch pressed XXXXX “Corrected” speed value
in hundredths of KPH.
Gauge indication may be
slightly different. This is
normal.Will display “-----” if message is not
received. Will display “99999” if
data received is invalid.
Switch pressed t XXXX Tachometer value in
RPM. Gauge indication
may be higher at higher
RPM. This is normal.Will display “-----” if message is not
received.
Switch pressed F1XXXX Present fuel level A/D in-
put. This input represents
fuel sender input.000-009 = Short circuit
010-254 = Normal range
255 = Open circuit
Switch pressed F2XXX Present FLPS.010-254 = Normal range
Switch pressed XXXC Last temperature gauge
input value in degrees C.
Temperature gauge indi-
cates present tempera-
ture per indication
standard.Will display “---”C if
message is not
received.
Will display “999” if data received
is invalid.
High = 130 deg C
Normal = 70 - 105 deg C
Low = less than 50 deg C
Switch pressed BAtXX.X Estimated present battery
voltage.
Switch pressed rES -X Seat belt buckle switch LH
status.1= Buckled
0 = Unbuckled
Switch pressed
(32 times) PA -XX through PA1-XX N/A
Switch pressed GAGE Return to beginning of self-diagno-
sis cycle.
Event
Odometer Display Description of Test/Data Notes:
METER/M&A diagnosis mode Description
SELF-DIAG RESULTS Displays combination meter self-diagnosis results. DATA MONITOR Displays combination meter input/output data in real time.
CAN DIAG SUPPORT MNTR The result of transmit/receive diagnosis of CAN communication can be read.
Revision: March 2010 2008 QX56

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INFINITI QX56 2008 Factory Service Manual WCS-14
< FUNCTION DIAGNOSIS >
DIAGNOSIS SYSTEM (METER)
X: Applicable
Display item [Unit]MAIN
SIGNALS SELECTION
FROM MENU Description
SPEED METER [km/h] or [mph] X X Displays the value of vehicle spee

WCS-14
< FUNCTION DIAGNOSIS >
DIAGNOSIS SYSTEM (METER)
X: Applicable
Display item [Unit]MAIN
SIGNALS SELECTION
FROM MENU Description
SPEED METER [km/h] or [mph] X X Displays the value of vehicle speed signal.
SPEED OUTPUT [km/h] or [mph] X XDisplays the value of vehicle speed signal, which is transmitted to
each unit with
CAN communication.
TACHO METER [rpm] XX Displays the value of engine speed signal, which is input from ECM.
FUEL METER [lit.] XXDisplays the value, which processes a resistance signal from fuel
gauge.
W TEMP METER [ °C] or [° F] X XDisplays the value of engine coolant temperature signal, which is in-
put from ECM.
ABS W/L [ON/OFF] X Displays [ON/OFF] condition of ABS warning lamp.
VDC/TCS IND [ON/OFF] X Displays [ON/OFF] condition of VDC OFF indicator lamp.
SLIP IND [ON/OFF] X Displays [ON/OFF] condition of SLIP indicator lamp.
BRAKE W/L [ON/OFF] X Displays [ON/OFF] condition of brake warning lamp.*
DOOR W/L [ON/OFF] X Displays [ON/OFF] condition of door warning lamp.
TRUNK W/L [ON/OFF] X Displays [ON/OFF] condition of glass hatch warning lamp.
HI-BEAM IND [ON/OFF] X Displays [ON/OFF] condition of high beam indicator.
TURN IND [ON/OFF] X Displays [ON/OFF] conditio n of turn indicator.
OIL W/L [ON/OFF] X Displays [ON/OFF] condition of oil pressure warning lamp.
C-ENG W/L [ON/OFF] X Displays [ON/OFF] condition of malfunction indicator lamp.
CRUISE IND [ON/OFF] X Displays [ON/OFF] condition of CRUISE indicator.
SET IND [ON/OFF] X Displays [ON/OFF] condition of SET indicator.
AT CHECK W/L [ON/OFF] X Displays [ON/OFF] condition of AT CHECK warning lamp.
FUEL W/L [ON/OFF] XX Displays [ON/OFF] condition of low-fuel warning lamp.
AIR PRES W/L [ON/OFF] X Displays [ON/OFF] condition of tire pressure warning lamp.
KEY G W/L [ON/OFF] X Displays [ON/OFF] condition of key green warning lamp.
KEY R W/L [ON/OFF] X Displays [ON/OFF] condition of key red warning lamp.
KEY KNOB W/L [ON/OFF] X Displays [ON/OFF] condition of key knob warning lamp.
M RANGE SW [ON/OFF] XX Displays [ON/OFF] condition of manual mode range switch.
NM RANGE SW [ON/OFF] XXDisplays [ON/OFF] condition of except for manual mode range
switch.
AT SFT UP SW [ON/OFF] XX Displays [ON/OFF] condition of A/T shift-up switch.
AT SFT DWN SW [ON/OFF] XX Displays [ON/OF F] condition of A/T shift-down switch.
DISTANCE [km] or [mile] XXDisplays the value, which is calculated by vehicle speed signal, fuel
gauge and fuel consumption from ECM.
BUZZER [ON/OFF] XX Displays [ON/ OFF] condition of buzzer.
BRAKE SW [ON/OFF] X Indicates [ON/OFF] condition of parking brake switch.
AT-M GEAR [1, 2, 3, 4, 5] XX Indicates [1, 2, 3, 4, 5] condition of A/T manual mode gear position.
P RANGE IND [ON/OFF] XX Indicates [ON/OFF] condition of A/T shift P range indicator.
R RANGE IND [ON/OFF] XX Indicates [ON/OFF] condition of A/T shift R range indicator.
N RANGE IND [ON/OFF] XX Indicates [ON/OFF] condition of A/T shift N range indicator.
D RANGE IND [ON/OFF] XX Indicates [ON/OFF] condition of A/T shift D range indicator.
4 RANGE IND [ON/OFF] XX Indicates [ON/OFF] condition of A/T shift 4 range indicator.
3 RANGE IND [ON/OFF] XX Indicates [ON/OFF] condition of A/T shift 3 range indicator.
2 RANGE IND [ON/OFF] XX Indicates [ON/OFF] condition of A/T shift 2 range indicator.
1 RANGE IND [ON/OFF] XX Indicates [ON/OFF] condition of A/T shift 1range indicator.
Revision: March 2010 2008 QX56

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INFINITI QX56 2008 Factory Service Manual WCS
DIAGNOSIS SYSTEM (METER)WCS-15
< FUNCTION DIAGNOSIS >
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NOTE:
Some items are not available due to vehicle specification.
*: The monitor will indicate “OFF” even thou

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INFINITI QX56 2008 Factory Service Manual WCS-16
< FUNCTION DIAGNOSIS >
DIAGNOSIS SYSTEM (BCM)
DIAGNOSIS SYSTEM (BCM)
BUZZER
BUZZER : CONSULT-III Function (BCM - BUZZER)INFOID:0000000004872980
DATA MONITOR
ACTIVE TEST
Monitor Item[Unit] Descr

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INFINITI QX56 2008 Factory Service Manual WCS
POWER SUPPLY AND GROUND CIRCUITWCS-17
< COMPONENT DIAGNOSIS >
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COMPONENT DIAGNOSIS
POWER SUPPLY AND GROUND CIRCUIT
COMBINATION METER
COMBINATION METER : Diagnosis Proce

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INFINITI QX56 2008 Factory Service Manual WCS-18
< COMPONENT DIAGNOSIS >
POWER SUPPLY AND GROUND CIRCUIT
BCM (BODY CONTROL MODULE)
BCM (BODY CONTROL MODULE) : Diagnosis ProcedureINFOID:0000000004873061
1. CHECK FUSES AND FUSIBLE LINK
Check th

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INFINITI QX56 2008 Factory Service Manual WCS
METER BUZZER CIRCUITWCS-19
< COMPONENT DIAGNOSIS >
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METER BUZZER CIRCUIT
DescriptionINFOID:0000000001697678
• The buzzer for warning chime system is installed in the

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