tire pressure INFINITI QX56 2009 Factory Owners Manual

WT-28
< ECU DIAGNOSIS >
BCM (BODY CONTROL MODULE)
Flash CodeMalfunction partReference
page
15
16
17
18 Tire pressure dropped below specified value. Refer to
WT-8, "
System
Description". —
21
22
23
24 Transmitter no data (FL)
Transmitter no data (FR)
Transmitter no data (RR)
Transmitter no data (RL)
WT-14
31
32
33
34Transmitter chec
ksum error (FL)
Transmitter chec ksum error (FR)
Transmitter chec ksum error (RR)
Transmitter chec ksum error (RL) WT-16
35
36
37
38Transmitter pressure
data error (FL)
Transmitter pressure data error (FR)
Transmitter pressure data error (RR)
Transmitter pressure data error (RL) WT-18
41
42
43
44Transmitter function
code error (FL)
Transmitter function code error (FR)
Transmitter function code error (RR)
Transmitter function code error (RL) WT-16
45
46
47
48Transmitter battery voltage low (FL)
Transmitter battery voltage low (FR)
Transmitter battery voltage low (RR)
Transmitter battery voltage low (RL)
WT-16
52
Vehicle speed signal WT-19
54Vehicle ignition signal WT-20
Revision: December 20092009 QX56

TPMS
WT-29
< SYMPTOM DIAGNOSIS >
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SYMPTOM DIAGNOSIS
TPMS
Symptom TableINFOID:0000000003772391
Symptom Reference
Low tire pressure warning lamp does not come on when ignition switch is turned on. WT-30
Low tire pressure warning lamp stays on when ignition switch is turned on.WT-31
Low tire pressure warning lamp flashes when ignition switch is turned on.WT-32
Hazard warning lamps flash when ignition switch is turned on.WT-33
Tire pressure information in display unit does not exist.WT-35
ID registration cannot be completed.WT-35
Revision: December 20092009 QX56

WT-30
< SYMPTOM DIAGNOSIS >
LOW TIRE PRESSURE WARNING LAMP DOES NOT TURN ON
LOW TIRE PRESSURE WARNING LAMP DOES NOT TURN ON
Low Tire Pressure Warning Lamp Does Not Come On When Ignition Switch Is Turned
On
INFOID:0000000003772392
DIAGNOSTIC PROCEDURE
1.SELF-DIAGNOSTIC RESULT CHECK
Using CONSULT-III, check display c ontents of BCM in SELF-DIAGNOSIS.
Is "CAN COMM CIRCUIT" displayed in the self-diagnosis display items?
YES >> Malfunction in CAN communication system.
NO >> GO TO 2
2.CHECK COMBINATION METER
Check combination meter operation. Refer to MWI-25, "
CONSULT-III Function (METER/M&A)".
Inspection results OK?
YES >> GO TO 3
NO >> Replace combination meter. Refer to MWI-102, "
Removal and Installation".
3.CHECK LOW TIRE PRESSURE WARNING LAMP
Disconnect BCM harness connector.
Does the low tire pressure warning lamp activate?
YES >> Replace BCM. Refer to BCS-56, "Removal and Installation".
NO >> Check combination meter operation.
Revision: December 20092009 QX56

LOW TIRE PRESSURE WARNING LAMP STAYS ONWT-31
< SYMPTOM DIAGNOSIS >
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LOW TIRE PRESSURE WA RNING LAMP STAYS ON
Low Tire Pressure Warning Lamp Stays On When Ignition Switch Is Turned On
INFOID:0000000003772393
DIAGNOSTIC PROCEDURE
1.BCM CONNECTORS
1. Turn ignition switch OFF.
2. Disconnect BCM harness connectors.
3. Check terminals for damage or loose connections.
Are any of the BCM c onnectors loose or damaged?
YES >> Repair or replace damaged parts.
NO >> GO TO 2
2.BCM POWER SUPPLY AND GROUND CIRCUITS
Check BCM power supply and ground circuits. Refer to BCS-32, "
Diagnosis Procedure".
Are the BCM power supply and ground circuits OK?
YES >> Replace BCM. Refer to BCS-56, "Removal and Installation".
NO >> Repair BCM circuits.
Revision: December 20092009 QX56

WT-32
< SYMPTOM DIAGNOSIS >
LOW TIRE PRESSURE WARNING LAMP BLINKS
LOW TIRE PRESSURE WARNING LAMP BLINKS
Low Tire Pressure Warning Lamp Flashes When Ignition Switch Is Turned On
INFOID:0000000003772394
NOTE:
If low tire pressure warning lamp flashes as shown, the system is normal.
Flash Mode A
• This mode shows transmitter status is OFF-mode.
Carry out transmitter wake up operation. Refer to WT-5, "
Transmit-
ter Wake Up Operation".
DIAGNOSTIC PROCEDURE
1.CHECK BCM CONNECTORS
1. Turn ignition switch OFF.
2. Disconnect BCM harness connectors.
3. Check terminals for damage or loose connections.
Inspection results OK?
YES >> GO TO 2
NO >> Repair or replace damaged parts.
2.CHECK TIRE PRESSURE WARNING CHECK CONNECTOR CIRCUIT
Check continuity between BCM harness connector M18 terminal 15
and ground.
Does continuity exist?
YES >> Repair circuit for short to ground.
NO >> Replace BCM. Refer to BCS-56, "
Removal and Installa-
tion".
SEIA0347E
Continuity should not exist.
ALEIA0014ZZ
Revision: December 20092009 QX56

WT-34
< SYMPTOM DIAGNOSIS >
"TIRE PRESSURE" INFORMATION IN DISPLAY UNIT DOES NOT EXIST
"TIRE PRESSURE" INFORMATION IN DISPLAY UNIT DOES NOT EXIST
"TIRE PRESSURE" Information in Display Unit Does Not ExistINFOID:0000000003772396
DIAGNOSTIC PROCEDURE
1.SELF-DIAGNOSTIC RESULT CHECK
Using CONSULT-III, check display contents in self-diagnostic results.
Is "CAN COMM CIRCUIT" displayed in the self-diagnosis display items?
YES >> Malfunction in CAN communication system.
NO >> GO TO 2.
2.CHECK DISPLAY UNIT
Perform display unit self-diagnosis. Refer to AV-38, "
AV CONTROL UNIT : CONSULT-III Function".
Inspection results OK?
OK >> Replace BCM. Refer to BCS-56, "Removal and Installation".
NG >> Repair or replace malfunctioning parts.
Revision: December 20092009 QX56

WT-36
< SYMPTOM DIAGNOSIS >
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
NVH Troubleshooting ChartINFOID:0000000003772398
Use the chart below to help you find the cause of the sy mptom. If necessary, repair or replace these parts.
×: ApplicableReference page
WT-40WT-41WT-45WT-40—
—
WT-45
FA X - 5 , "
NVH Troubleshooting Chart
" (FFD),
RAX-5, "
NVH Troubleshooting Chart
" (RFD)
FA X - 5 , "
NVH Troubleshooting Chart
" (FAX),
FSU-5, "
NVH Troubleshooting Chart
" (FSU)
RAX-5, "
NVH Troubleshooting Chart
" (RAX),
RSU-5, "
NVH Troubleshooting Chart
" (RSU)
Refer to TIRES in this chart.
Refer to ROAD WHEEL in this chart.
BR-6, "
NVH Troubleshooting Chart
"
ST-12, "
NVH Troubleshooting Chart
"
Possible cause and SUSPECTED PARTS
Out-of-round
Imbalance
Incorrect tire pressure
Uneven tire wear
Deformation or damage
Non-uniformity
Incorrect tire size
DIFFERENTIAL
FRONT AXLE AND FRONT SUSPENSION
REAR AXLE AND REAR SUSPENSION
TIRES
ROAD WHEEL
BRAKE
STEERING
Symptom TIRESNoise
× ××××× × × × × ××
Shake × ×××× × × × × ××
Vibration ××× ×××
Shimmy × ×××××× × × × ××
Shudder × ×××× × × × × ××
Poor quality ride or
handling × ×××× × × × ×
ROAD
WHEEL Noise
×× × ××× ×××
Shake ×× × ×× ×××
Shimmy, shudder ×× × ×× ×××
Poor quality ride or
handling ×× ×
×× ×
Revision: December 20092009 QX56

REMOVAL AND INSTALLATIONWT-43
< REMOVAL AND INSTALLATION >
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REMOVAL AND INSTALLATION
REMOVAL AND INSTALLATION
Transmitter (Pressure Sensor)INFOID:0000000003772405
REMOVAL
1. Deflate tire. Unscrew transmitter retaining nut and allow transmitter to fall into tire.
2. Gently bounce tire so that transmitter falls to bottom of tire. Place wheel and tire assembly on tire changing machine and
break both tire beads. Ensure that the transmitter remains at the
bottom of the tire while breaking the bead.
3. Turn tire so that valve hole is at bottom, and gently bounce the tire to ensure transmitter is near valve hole. Carefully lift tire onto
turntable and position valve hole (and transmitter) 270 degrees
from mounting/dismounting head.
4. Lubricate tire well, and remove top side of tire. Reach inside the tire and remove the transmitter.
5. Remove the second side of the tire as normal.
INSTALLATION
1. Place first side of tire onto rim.
2. Mount transmitter on rim and tighten nut to specification.
SEIA0047E
WEIA0046E
SEIA0049E
Transmitter nut : 7.7 N·m (0.79 kg-m, 68 in-lb)
WEIA0137E
Revision: December 20092009 QX56

SERVICE DATA AND SPECIFICATIONS (SDS)WT-45
< SERVICE DATA AND SPECIFICATIONS (SDS)
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SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
Road WheelINFOID:0000000004201424
TireINFOID:0000000003772407
Unit: kPa (kg/cm2, psi)
Wheel type AluminumSte el
Inside Outside
Maximum radial
runout limit Lateral mm (in)
0.3 (0.012) or less 1.0 (0.039) or less 0.9 (0.035) or less
Radial mm (in) 0.3 (0.012) or less 0.8 (0.031) or less 0.4 (0.016) or less
Maximum residual im-
balance Dynamic (at rim flange)
Less than 5 g (0.18 oz) (per side)
Static (at rim flange) Less than 10 g (0.35 oz)
Tire size Air pressure
Conventional tire Spare tire
Full size spare tire —240 (2.4, 35)
P275/60R20 240 (2.4, 35)—
Revision: December 20092009 QX56

WW-44
< ECU DIAGNOSIS >
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: December 20092009 QX56