2010 INFINITI QX56 tire pressure

BCS-30
< FUNCTION DIAGNOSIS >[BCM]
DIAGNOSIS SYSTEM (BCM)
AIR PRESSURE MONITOR : CONSULT-III Function
INFOID:0000000005146413
WORK SUPPORT
ID Read
The registered ID number is displayed.
ID Regist
Refer to WT-6, "ID Registration Procedure".
SELF-DIAG RESULTS
Operation Procedure
Refer to WT-11, "CONSULT-III Function (BCM)".
DATA MONITOR
Screen of data monitor mode is displayed. Refer to WT-11, "CONSULT-III Function (BCM)".
NOTE:
When malfunction is detected, CONSUL T-III perform REAL-TIME DIAGNOSIS.
Also, any malfunction detected while in this mode will be displayed at real time.
ACTIVE TEST
NOTE:
Before performing the self-diagnosis, be sure to register the ID, or else the actual malfunction may be different
from that displayed on CONSULT-III.
TEST ITEM LIST
THEFT ALM
THEFT ALM : CONSULT-III F unction (BCM - THEFT ALM)INFOID:0000000005370264
WORK SUPPORT
DATA MONITOR
Test item Content
WARNING LAMP This test is able to check to make sure that the warning lamp turns on.
ID REGIST WARNING This test is able to check to make su re that the buzzer sounds or the warning lamp turns on.
FLAT TIRE WARNING This test is able to check to make sure that the buzzer sounds.
HORN This test is able to check to make sure that the horn sounds.
FLASHER This test is able to check to make sure that each turn signal lamp turns on.
Test Item Description
SECURITY ALARM SET This mo de is able to confirm and change security alarm ON-OFF setting.
THEFT ALM TRG The switch which triggered vehicle security alarm is recorded. This mode is able to confirm and
erase the record of vehicle security alarm. The trigger data can be erased by touching “CLEAR” on
CONSULT-III screen.
Monitor Item
[Unit] Description
IGN ON SW [ON/OFF] Indicates ignition switch (ON) status judged from IGN signal (ignition power supply)
ACC ON SW [ON/OFF] Indicates ignition switch (ACC) status judged from ACC signal (accessory power supply)
I-KEY LOCK [ON/OFF] Indicates lock signal status received from Intelligent Key unit by CAN communication
I-KEY UNLOCK [ON/OFF] Indicates unlock si gnal status received from Intelligent Key unit by CAN communication
I-KEY TRUNK [ON/OFF] Indicates condit ion of back door opener switch
TRNK OPNR SW [ON/OFF] Indicates switch status of back door opener switch
TRNK OPN MNTR [ON/OFF] Indicates switch status of back door latch
Revision: April 20092010 QX56

BCS-44
< ECU DIAGNOSIS >[BCM]
BCM (BODY CONTROL MODULE)
Te r m i n a lWire
color Signal name Signal
input/
output Measuring condition
Reference value or waveform
(Approx.)
Ignition
switch Operation or condition
1BR/W Ignition keyhole illumi-
nation Output OFFDoor is locked (SW OFF)
Battery voltage
Door is unlocked (SW ON) 0V
2SB Combination switch
input 5 Input ON
Lighting, turn, wiper OFF
Wiper dial position 4
3G/Y Combination switch
input 4 Input ONLighting, turn, wiper OFF
Wiper dial position 4
4Y Combination switch
input 3 Input ON
Lighting, turn, wiper OFF
Wiper dial position 4
5G/B Combination switch
input 2
Input ONLighting, turn, wiper OFF
Wiper dial position 4
6V Combination switch
input 1
9GR/R Rear window defogger
switch
Input ONRear window defogger switch
ON
0V
Rear window defogger switch
OFF 5V
10 G Hazard lamp flash Input OFF ON (opening or closing)
0V
OFF (other than above) Battery voltage
11 O Ignition switch (ACC
or ON)
InputACC or
ON Ignition switch ACC or ON
Battery voltage
12 R/L Front door switch RH Input OFF ON (open)
0V
OFF (closed) Battery voltage
13 GR Rear door switch RH Input OFF ON (open)
0V
OFF (closed) Battery voltage
15 L/W Tire pressure warning
check connector
Input OFF
—5V
18 P Remote keyless entry
receiver and optical
sensor (ground)
Output OFF
—0V
SKIA5291E
SKIA5292E
SKIA5291E
SKIA5292E
Revision: April 20092010 QX56

BCS-54
< ECU DIAGNOSIS >[BCM]
BCM (BODY CONTROL MODULE)
DTC Inspection Priority Chart
INFOID:0000000005146433
If some DTCs are displayed at the same time, perform inspections one by one based on the following priority
chart.
DTC IndexINFOID:0000000005146434
NOTE: Details of time display
• CRNT: Displays when there is a malfunction now or after returning to the normal condition until turning igni- tion switch OFF → ON again.
• 1 - 39: Displayed if any previous malfunction is present when current condition is normal. It increases like 1
→ 2 → 3...38 → 39 after returning to the normal condition whenever ignition switch OFF → ON. The counter
remains at 39 even if the number of cycles exceeds it. It is counted from 1 again when turning ignition switch
OFF → ON after returning to the normal condition if the malfunction is detected again.
Display contents of CONS ULTFail-safe Cancellation
U1000: CAN COMM CIRCUIT I nhibit engine crankingWhen the BCM re-establishes communication with the other mod-
ules.
Priority
DTC
1 • U1000: CAN COMM CIRCUIT
2 • B2190: NATS ANTENNA AMP
• B2191: DIFFERENCE OF KEY
• B2192: ID DISCORD BCM-ECM
• B2193: CHAIN OF BCM-ECM
• B2013: STRG COMM 1
• B2552: INTELLIGENT KEY
• B2590: NATS MALFUNCTION
3 • C1729: VHCL SPEED SIG ERR
• C1735: IGNITION SIGNAL
4 • C1708: [NO DATA] FL
• C1709: [NO DATA] FR
• C1710: [NO DATA] RR
• C1711: [NO DATA] RL
• C1712: [CHECKSUM ERR] FL
• C1713: [CHECKSUM ERR] FR
• C1714: [CHECKSUM ERR] RR
• C1715: [CHECKSUM ERR] RL
• C1716: [PRESSDATA ERR] FL
• C1717: [PRESSDATA ERR] FR
• C1718: [PRESSDATA ERR] RR
• C1719: [PRESSDATA ERR] RL
• C1720: [CODE ERR] FL
• C1721: [CODE ERR] FR
• C1722: [CODE ERR] RR
• C1723: [CODE ERR] RL
• C1724: [BATT VOLT LOW] FL
• C1725: [BATT VOLT LOW] FR
• C1726: [BATT VOLT LOW] RR
• C1727: [BATT VOLT LOW] RL
CONSULT display
Fail-safeIntelligent Key
warning lamp ON Tire pressure
monitor warning lamp ON Reference page
No DTC is detected.
further testing
may be required. ————
U1000: CAN COMM CIRCUIT ———BCS-32
B2190: NATS ANTENNA AMP ———SEC-31
Revision: April 20092010 QX56

BCS
BCM (BODY CONTROL MODULE)BCS-55
< ECU DIAGNOSIS > [BCM]
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B2191: DIFFERENCE OF KEY
———SEC-34
B2192: ID DISCORD BCM-ECM ———SEC-35
B2193: CHAIN OF BCM-ECM ———SEC-37
B2552: INTELLIGENT KEY ———SEC-39
B2590: NATS MALFUNCTION ———SEC-40
C1708: [NO DATA] FL ———WT-14
C1709: [NO DATA] FR ———WT-14
C1710: [NO DATA] RR ———WT-14
C1711: [NO DATA] RL ———WT-14
C1712: [CHECKSUM ERR] FL ———WT-16
C1713: [CHECKSUM ERR] FR ———WT-16
C1714: [CHECKSUM ERR] RR ———WT-16
C1715: [CHECKSUM ERR] RL ———WT-16
C1716: [PRESSDATA ERR] FL ———WT-18
C1717: [PRESSDATA ERR] FR ———WT-18
C1718: [PRESSDATA ERR] RR ———WT-18
C1719: [PRESSDATA ERR] RL ———WT-18
C1720: [CODE ERR] FL ———WT-16
C1721: [CODE ERR] FR ———WT-16
C1722: [CODE ERR] RR ———WT-16
C1723: [CODE ERR] RL ———WT-16
C1724: [BATT VOLT LOW] FL ———WT-16
C1725: [BATT VOLT LOW] FR ———WT-16
C1726: [BATT VOLT LOW] RR ———WT-16
C1727: [BATT VOLT LOW] RL ———WT-16
C1729: VHCL SPEED SIG ERR ———WT-19
C1735: IGNITION SIGNAL ———WT-20
CONSULT display Fail-safeIntelligent Key
warning lamp ON Tire pressure
monitor warning
lamp ON Reference page
Revision: April 20092010 QX56

BCS
BCM (BODY CONTROL MODULE)BCS-59
< ON-VEHICLE REPAIR > [BCM]
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ON-VEHICLE REPAIR
BCM (BODY CONTROL MODULE)
Removal and InstallationINFOID:0000000005146436
REMOVAL
NOTE:
If possible, before removing BCM, retrieve current BCM configuration to use for reference when configuring
brand-new BCM after installation. Refer to
WT-6, "
ID Registration Procedure".
1. Disconnect the battery negative terminal.
2. Remove the lower knee protector. Refer to IP-11, "
Exploded View".
3. Remove the screw and release the BCM.
4. Disconnect the connectors and then remove the BCM.
INSTALLATION
Installation is in the reverse order of removal.
NOTE:
• When replacing BCM, it must be configured. Refer to BCS-4, "
CONFIGURATION : Special Repair Require-
ment".
• When replacing BCM, perform initialization of NATS sy stem and registration of all NATS ignition key IDs.
Refer to the CONSULT-III operation manual for the initialization procedure.
• When replacing BCM, perform ID regi stration procedure of low tire pressure warning system. Refer to WT-6,
"ID Registration Procedure".
LEIA0068E
Revision: April 20092010 QX56

C1101, C1102, C1103, C1104 WHEEL SENSOR-1
BRC-29
< COMPONENT DIAGNOSIS > [VDC/TCS/ABS]
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BRC
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NOTE:
The green POWER indicator should illuminate. If the POWER indicator does not illuminate, replace the
battery in the ABS active wheel sensor tester before proceeding.
3. Spin the wheel of the vehicle by hand and observe the red SENSOR indicator on the ABS active wheel
sensor tester. The red SENSOR indicator should flash on and off to indicate an output signal.
NOTE:
If the red SENSOR indicator illuminates but does not flash, reverse the polarity of the tester leads and
retest.
Does the ABS active wheel s ensor tester detect a signal?
YES >> GO TO 3
NO >> Replace the wheel sensor. Refer to BRC-114, "
Removal and Installation".
3.CHECK TIRES
Check the inflation pressure, wear and size of each tire.
Is the inspection result normal?
YES >> GO TO 4
NO >> Adjust tire pressure or replace tire(s).
4.CHECK WHEEL BEARINGS
Check wheel bearing axial end play. Refer to FA X - 6 , "
On-Vehicle Inspection and Service" (front) or RAX-6,
"On-Vehicle Inspection and Service" (rear).
Is the inspection result normal?
YES >> GO TO 5
NO >> Repair or replace as necessary. Refer to FAX-7, "
Removal and Installation" (front) or RAX-8,
"Removal and Installation" (rear).
5.CHECK WIRING HARNESS FOR SHORT CIRCUIT
1. Disconnect ABS actuator and electric unit (control unit) connec- tor and wheel sensor connector of malfunction code.
2. Check continuity between wheel sensor connector terminals
and ground.
Is the inspection result normal?
YES >> GO TO 6
NO >> Repair the circuit.
6.CHECK WIRING HARNESS FOR OPEN CIRCUIT
Check continuity between ABS actuator and electric unit (control unit) connector and the malfunctioning wheel
sensor connector.
Is the inspection result normal?
Continuity should not exist.
AWFIA0188ZZ
Wheel sensor ABS actuator and
electric unit (control unit) Wheel sensor
Continuity
Connector Terminal Connector Terminal
Front LH
E12545
E18 1
Ye s
46
2
Front RH 34
E117 1
33 2
Rear LH 37
C11 2
36 1
Rear RH 42
C10 2
43 1
Revision: April 20092010 QX56

BRC-32
< COMPONENT DIAGNOSIS >[VDC/TCS/ABS]
C1105, C1106, C1107,
C1108 WHEEL SENSOR-2
NO >> Repair or replace as necessary.
2.CHECK WHEEL SENSOR OUTPUT SIGNAL
1. Connect ABS active wheel sensor tester (J-45741) to wheel sensor using appropriate adapter.
2. Turn on the ABS active wheel sensor tester power switch. NOTE:
The green POWER indicator should illuminate. If the POWER indicator does not illuminate, replace the
battery in the ABS active wheel sensor tester before proceeding.
3. Spin the wheel of the vehicle by hand and observe the red SENSOR indicator on the ABS active wheel
sensor tester. The red SENSOR indicator should flash on and off to indicate an output signal.
NOTE:
If the red SENSOR indicator illuminates but does not flash, reverse the polarity of the tester leads and
retest.
Does the ABS active wheel sensor tester detect a signal?
YES >> GO TO 3
NO >> Replace the wheel sensor. Refer to BRC-114, "
Removal and Installation".
3.CHECK TIRES
Check the inflation pressure, wear and size of each tire.
Is the inspection result normal?
YES >> GO TO 4
NO >> Adjust tire pressure or replace tire(s).
4.CHECK WHEEL BEARINGS
Check wheel bearing axial end play. Refer to FAX-6, "
On-Vehicle Inspection and Service" (front) or RAX-6,
"On-Vehicle Inspection and Service" (rear).
Is the inspection result normal?
YES >> GO TO 5
NO >> Repair or replace as necessary. Refer to FA X - 7 , "
Removal and Installation" (front) or RAX-8,
"Removal and Installation" (rear).
5.CHECK WIRING HARNESS FOR SHORT CIRCUIT
1. Disconnect ABS actuator and elec tric unit (control unit) connec-
tor and wheel sensor connector of malfunction code.
2. Check continuity between wheel sensor connector terminals and ground.
Is the inspection result normal?
YES >> GO TO 6
NO >> Repair the circuit.
6.CHECK WIRING HARNESS FOR OPEN CIRCUIT
Check continuity between ABS actuator and electric unit (control unit) connecto r and the malfunctioning wheel
sensor connector. Continuity should not exist.
AWFIA0188ZZ
Revision: April 20092010 QX56

C1115 WHEEL SENSORBRC-43
< COMPONENT DIAGNOSIS > [VDC/TCS/ABS]
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BRC
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3.CHECK TIRES
Check the inflation pressure, wear and size of each tire.
Is the inspection result normal?
YES >> GO TO 4
NO >> Adjust tire pressure or replace tire(s).
4.CHECK WHEEL BEARINGS
Check wheel bearing axial end play. Refer to FA X - 6 , "
On-Vehicle Inspection and Service" (front) or RAX-6,
"On-Vehicle Inspection and Service" (rear).
Is the inspection result normal?
YES >> GO TO 5
NO >> Repair or replace as necessary. Refer to FAX-7, "
Removal and Installation" (front) or RAX-8,
"Removal and Installation" (rear).
5.CHECK WIRING HARNESS FOR SHORT CIRCUIT
1. Disconnect ABS actuator and electric unit (control unit) connec- tor and wheel sensor connector of malfunction code.
2. Check continuity between wheel sensor connector terminals and ground.
Is the inspection result normal?
YES >> GO TO 6
NO >> Repair the circuit.
6.CHECK WIRING HARNESS FOR OPEN CIRCUIT
Check continuity between ABS actuator and electric unit (control unit) connector and the malfunctioning wheel
sensor connector.
Is the inspection result normal?
YES >> Replace the ABS actuator and elec tric unit (control unit). Refer to BRC-116, "Removal and Instal-
lation".
NO >> Repair the circuit.
Component InspectionINFOID:0000000005194909
1.CHECK DATA MONITOR
On “DATA MONITOR”, select “FR LH SENSOR”, “FR RH SENSOR”, “RR LH SENSOR”, and “RR RH SEN-
SOR”, and check the vehicle speed. Continuity should not exist.
AWFIA0188ZZ
Wheel sensor
ABS actuator and
electric unit (control unit) Wheel sensor
Continuity
Connector Terminal Connector Terminal
Front LH
E12545
E18 1
Ye s
46
2
Front RH 34
E117 1
33 2
Rear LH 37
C11 2
36 1
Rear RH 42
C10 2
43 1
Revision: April 20092010 QX56