2010 INFINITI QX56 battery

MWI-18
< FUNCTION DIAGNOSIS >
METER SYSTEM
SHIFT POSITION INDICATOR : Component Parts Location
INFOID:0000000005146060
SHIFT POSITION INDICATOR : Component DescriptionINFOID:0000000005146061
WARNING LAMPS/INDICATOR LAMPS
WARNING LAMPS/INDICATOR LAMPS : System DiagramINFOID:0000000005146062
1. IPDM E/R E122, E124 2. Combination meter M23, M24 3. Fuel level sensor unit and fuel pump
C5 (view with inspection hole cover re-
moved)
4. ECM E16 (view with battery removed) 5. ABS actuator and electric unit (control
unit) E125 6. Oil pressure switch F4
A: Oil pan (upper)
7. A/T assembly F9 8. BCM M18, M19 (view with instrument
lower panel LH removed)
AWNIA0201ZZ
Unit Description
Combination meter Displays the shift position on the information display using shift position signal received from TCM.
TCM Transmits the shift position signal to the combination meter via CAN communication.
JSNIA0449GB
Revision: April 20092010 QX56

MWI
METER SYSTEMMWI-19
< FUNCTION DIAGNOSIS >
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WARNING LAMPS/INDICATOR LAMPS : System DescriptionINFOID:0000000005146063
OIL PRESSURE WARNING LAMP
• 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 line.
• The combination meter turns the oil pressure warning lamp ON/OFF according to the oil pressure switch sig- nal received via CAN communication.
WARNING LAMPS/INDICATOR LAMPS : Component Parts LocationINFOID:0000000005146064
WARNING LAMPS/INDICATOR LAMPS : Component DescriptionINFOID:0000000005146065
INFORMATION DISPLAY
1. IPDM E/R E122, E124 2. Combination meter M23, M24 3. Fuel level sensor unit and fuel pump
C5 (view with inspection hole cover re-
moved)
4. ECM E16 (view with battery removed) 5. ABS actuator and electric unit (control unit) E1256. Oil pressure switch F4
A: Oil pan (upper)
7. A/T assembly F9 8. BCM M18, M19 (view with instrument
lower panel LH removed)
AWNIA0201ZZ
Unit Description
Combination meter Turns the oil pressure warning lamp ON/OFF according to the oil pressure switch signal received
from BCM by means of communication.
IPDM E/R Reads the ON/OFF signals from the oil pressure switch and transmits the oil pressure switch signal
to the combination meter via BCM with the CAN communication line.
Oil pressure switch Refer to MWI-34, "
Description".
BCM Transmits the oil pressure switch signal received from IPDM E/R via CAN communication to the
combination meter via CAN communication.
Revision: April 20092010 QX56

MWI
METER SYSTEMMWI-21
< FUNCTION DIAGNOSIS >
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INFORMATION DISPLAY : Co mponent Parts LocationINFOID:0000000005146068
INFORMATION DISPLAY : Component DescriptionINFOID:0000000005146069
1. IPDM E/R E122, E124 2. Combination meter M23, M24 3. Fuel level sensor unit and fuel pump
C5 (view with inspection hole cover re-
moved)
4. ECM E16 (view with battery removed) 5. ABS actuator and electric unit (control unit) E1256. Oil pressure switch F4
A: Oil pan (upper)
7. A/T assembly F9 8. BCM M18, M19 (view with instrument
lower panel LH removed)
AWNIA0201ZZ
Unit Description
Combination meter Controls the information display according to the signal received from each unit.
Fuel level sensor unit Refer to MWI-32, "
Description".
BCM Transmits signals provided by various units to the combination meter via CAN communication line.
Washer level switch Transmits the washer level signal to the combination meter.
Parking brake switch Refer to MWI-35, "
Description".
Door switch Transmits the door switch signals to BCM.
Back door latch (door ajar switch) Transmits the back door switch signal to BCM.
Glass hatch ajar switch Transmits the glass hatch ajar switch signal to BCM.
TCM Transmits A/T oil temperature signal to the combination meter with CAN communication line.
Revision: April 20092010 QX56

MWI-22
< FUNCTION DIAGNOSIS >
DIAGNOSIS SYSTEM (METER)
DIAGNOSIS SYSTEM (METER)
Diagnosis DescriptionINFOID:0000000005146071
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-28, "
COMBINATION METER : Diagnosis Procedure". Replace combination
meter if normal. Refer to MWI-100, "
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: April 20092010 QX56

MWI
DIAGNOSIS SYSTEM (METER)MWI-23
< FUNCTION DIAGNOSIS >
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CONSULT-III Function (METER/M&A)INFOID:0000000005146072
CONSULT-III can display each diagnostic item us ing the diagnostic test modes shown following.
SELF-DIAG RESULTS
Display Item List
Refer to MWI-59, "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: April 20092010 QX56

MWI-28
< COMPONENT DIAGNOSIS >
POWER SUPPLY AND GROUND CIRCUIT
POWER SUPPLY AND GROUND CIRCUIT
COMBINATION METER
COMBINATION METER : Diagnosis ProcedureINFOID:0000000005146078
Regarding Wiring Diagram information, refer to MWI-41, "Wiring Diagram".
1.CHECK FUSES
Check for blown combination meter fuses.
Is the inspection result normal?
YES >> GO TO 2
NO >> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.
2.POWER SUPPLY CIRCUIT CHECK
1. Disconnect combination meter connector M24.
2. Check voltage between combination meter harness connector M24 terminals 21, 37, 40 and ground.
Is the inspection result normal?
YES >> GO TO 3
NO >> Check harness for open between combination meter and fuse.
3.GROUND CIRCUIT CHECK
1. Turn ignition switch OFF.
2. Disconnect combination meter connector M23.
3. Check continuity between combination meter harness connector M23 terminal 47, 52 and ground, and connector M24 terminal 20
and ground.
Is the inspection result normal?
Unit Power source Fuse No.
Combination meter Battery 3
Ignition switch ON or START 14
Ignition switch ACC or ON 4
TerminalsIgnition switch position
(+) (–) OFF ACC ON START
Connector Terminal
M24 21
Ground 0V 0V
Battery
voltage Battery
voltage
37 0VBattery
voltage Battery
voltage 0V
40 Battery
voltage Battery
voltage Battery
voltage Battery
voltage
AWNIA0204ZZ
Te r m i n a l s
Continuity
(+)
(–)
Connector Terminal
A: M23 47
Ground Yes
52
B: M24 20
AWNIA0205ZZ
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MWI
POWER SUPPLY AND GROUND CIRCUITMWI-29
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YES >> Inspection End.
NO >> Check ground harness.
BCM (BODY CONTROL MODULE)
BCM (BODY CONTROL MODULE) : Diagnosis ProcedureINFOID:0000000005380655
Regarding Wiring Diagram information, refer to MWI-70, "Wiring Diagram".
1. CHECK FUSES AND FUSIBLE LINK
Check that the following fuses and fusible link are not blown.
Is the fuse blown?
YES >> Replace the blown fuse or fusible link after repairing the affected circuit.
NO >> GO TO 2
2. CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM.
3. Check voltage between BCM harness connector and ground.
Is the measurement value normal?
YES >> GO TO 3
NO >> Repair or replace harness.
3. CHECK GROUND CIRCUIT
Terminal No. Signal nameFuses and fusible link No.
57 Battery power supply 22 (15A)
70 F (50A)
11 Ignition ACC or ON 4 (10A)
38 Ignition ON or START 59 (10A)
ConnectorTe r m i n a l s
Power
source Condition Voltage (V) (Ap-
prox.)
(+) (-)
M18 11 Ground
ACC
power
supply Ignition
switch
ACC or ON Battery voltage
38 Ground Ignition
power
supply Ignition
switch ON
or START Battery voltage
M20 57 Ground
Battery
power
supply Ignition
switch OFF Battery voltage
70 Ground Battery
power
supply Ignition
switch OFF Battery voltage
LIIA2415E
Revision: April 20092010 QX56

MWI-30
< COMPONENT DIAGNOSIS >
POWER SUPPLY AND GROUND CIRCUIT
Check continuity between BCM harness connector and ground.
Does continuity exist?
YES >> Inspection End.
NO >> Repair or replace harness.
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
IPDM E/R (INTELLIGENT POWER DIST RIBUTION MODULE ENGINE ROOM) : Di-
agnosis Procedure
INFOID:0000000005380656
Regarding Wiring Diagram information, refer to MWI-85, "Wiring Diagram".
1. CHECK FUSES AND FUSIBLE LINK
Check that the following IPDM E/R fuses or fusible link are not blown.
Is the fuse blown?
YES >> Replace the blown fuse or fusible link after repairing the affected circuit.
NO >> GO TO 2
2. CHECK BATTERY POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R.
3. Check voltage between IPDM E/R harness connectors and ground.
Is the measurement value normal?
YES >> GO TO 3
NO >> Repair or replace harness.
3. CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
BCM
GroundContinuity
Connector Terminal
M20 67 Yes
LIIA0915E
Terminal No. Signal nameFuses and fusible link No.
1 Battery A, D
2 Battery C
12 Ignition switch ON or START 59
TerminalsIgnition switch position
(+) (−) OFF ON START
Connector Terminal
E118 (A) 1
Ground Battery
voltage Battery
voltage Battery
voltage
2 Battery
voltage Battery
voltage Battery
voltage
E119 (B) 12 0VBattery
voltage Battery
voltage
AWMIA0023ZZ
Revision: April 20092010 QX56