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WT-26
TROUBLE DIAGNOSIS FOR SYMPTOMS
Revision: August 20072004 QX56
TROUBLE DIAGNOSIS FOR SYMPTOMSPFP:00007
Inspection 1: Low Tire Pressure Warning Lamp Does Not Come On When Igni-
tion Switch Is Turned On
EES001PV
DIAGNOSTIC PROCEDURE
1. SELF-DIAGNOSTIC RESULT CHECK
1. With the ignition switch OFF, connect CONSULT-II and CONSULT-II CONVERTER to the data link con-
nector, then turn the ignition switch ON.
2. Select “START (NISSAN BASED VHCL)”.
3. Select "BCM" on “SELECT SYSTEM” screen.
NOTE:
If the BCM is not indicated, refer to LAN-5, "
CAN COMMUNICATION" .
4. Select "BCM" on "SELECT TEST ITEM" screen, and select "SELF-DIAG RESULTS".
5. Check display contents in self-diagnostic results.
Is "CAN COMM CIRCUIT" displayed in the self-diagnosis display items?
YES >> Malfunction in CAN communication system. Go To LAN-5, "CAN COMMUNICATION" .
NO >> GO TO 2.
2. CHECK COMBINATION METER
Check combination meter operation. Refer to DI-8, "
Combination Meter"
Inspection results OK?
OK >> GO TO 3.
NG >> Replace combination meter. Refer to IP-13, "
Combination Meter" .
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-19, "Removal and Installation of BCM" .
NO >> Check combination meter and repair or replace.
Inspection 2: Low Tire Pressure Warning Lamp Stays On When Ignition Switch
Is Turned On
EES0012M
DIAGNOSTIC PROCEDURE
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect BCM harness connectors M18 and M20.
3. Check terminals for damage or loose connections.
Inspection results OK?
OK >> GO TO 2.
NG >> Repair or replace damaged parts.
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TROUBLE DIAGNOSIS FOR SYMPTOMS
WT-27
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2. CHECK POWER SUPPLY CIRCUIT (BAT)
Check voltage between BCM harness connector M20 terminal 70 (W/B) and ground.
1.
OK or NG
OK >> GO TO 3.
NG >> Check BCM power supply circuit for open or short.
3. CHECK POWER SUPPLY CIRCUIT (IGN)
1. Turn ignition switch ON.
2. Check voltage between BCM harness connector M18 terminal 38 (W/L) and ground.
OK or NG
OK >> GO TO 4.
NG >> Check BCM power supply circuit for open or short.
4. CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between BCM harness connector M20 terminal 67 (B) and ground.
OK or NG
OK >> Replace BCM. Refer to BCS-19, "Removal and Installa-
tion of BCM" .
NG >> Repair BCM ground circuit.Te r m i n a l s
Vo l ta g e
(Approx.)
(+) (–)
ConnectorTe r m i n a l
(Wire color)
Ground 12V
M20 70 (W/B)
LEIA0098E
Te r m i n a l s
Vo l ta g e
(Approx.)
(+) (–)
ConnectorTe r m i n a l
(Wire color)
Ground 12V
M18 38 (W/L)
WEIA0038E
Terminals Continuity
(+) (–)
ConnectorTe r m i n a l
(Wire color)
Ground Yes
M20 67 (B)
LIIA1040E
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WT-28
TROUBLE DIAGNOSIS FOR SYMPTOMS
Revision: August 20072004 QX56
Inspection 3: Low Tire Pressure Warning Lamp Flashes When Ignition Switch
Is Turned On
EES0012N
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-15,
"Transmitter Wake Up Operation" .
DIAGNOSTIC PROCEDURE
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect BCM harness connectors M18 and M20.
3. Check terminals for damage or loose connections.
Inspection results OK?
OK >> GO TO 2.
NG >> Repair or replace damaged parts.
2. CHECK TIRE PRESSURE WARNING CHECK CONNECTOR CIRCUIT
Check continuity between BCM harness connector M18 terminal 15 (L/W) and check connector M123 terminal
1 (L/W).
OK or NG
OK >> Replace BCM. Refer to BCS-19, "Removal and Installa-
tion of BCM" .
NG >> Repair or replace harness connector.
SEIA0347E
Continuity should exist
WEIA0097E
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TROUBLE DIAGNOSIS FOR SYMPTOMS
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Inspection 4: Hazard Warning Lamp Flashes When Ignition Switch Is Turned OnEES0012O
DIAGNOSTIC PROCEDURE
1. CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM harness connector M20.
3. Check continuity between BCM harness connector M20 terminal 67 (B) and ground.
OK or NG
OK >> Replace BCM. Refer to BCS-19, "Removal and Installa-
tion of BCM" .
NG >> Repair BCM ground circuit.Te r m i n a l s
Continuity
(+) (–)
ConnectorTe r m i na l
(Wire color)
Ground Yes
M20 67 (B)LIIA1040E
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WT-30
TROUBLE DIAGNOSIS FOR SYMPTOMS
Revision: August 20072004 QX56
Inspection 5: “TIRE PRESSURE” Information In Display Unit Does Not ExistEES001PW
DIAGNOSTIC PROCEDURE
1. SELF-DIAGNOSTIC RESULT CHECK
1. With the ignition switch OFF, connect CONSULT-II and CONSULT-II CONVERTER to the data link con-
nector, then turn the ignition switch ON.
2. Select “START (NISSAN BASED VHCL)”.
3. Select "BCM" on “SELECT SYSTEM” screen.
NOTE:
If the BCM is not indicated, refer to LAN-5, "
CAN COMMUNICATION" .
4. Select "BCM" on "SELECT TEST ITEM" screen, and select "SELF-DIAG RESULTS".
5. Check display contents in self-diagnostic results.
Is "CAN COMM CIRCUIT" displayed in the self-diagnosis display items?
YES >> Malfunction in CAN communication system. Go To LAN-5, "CAN COMMUNICATION" .
NO >> GO TO 2.
2. CHECK DISPLAY UNIT
Perform display unit self-diagnosis. Refer to AV- 1 0 4 , "
Self-Diagnosis Mode (NAVI)" .
Inspection results OK?
OK >> Replace BCM. Refer to BCS-19, "Removal and Installation of BCM" .
NG >> Repair or replace malfunctioning parts.
Inspection 6: ID Registration Cannot Be CompletedEES0012Q
DIAGNOSTIC PROCEDURE
1. ID REGISTRATION (ALL)
Carry out ID registration of all transmitters.
Can ID registration of all transmitters be completed?
YES >> Inspection End.
NO >> Go To WT-23, "
Inspection 1: Transmitter or Control Unit (BCM)" .
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REMOVAL AND INSTALLATION
WT-31
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REMOVAL AND INSTALLATIONPFP:00000
Transmitter (Pressure Sensor)EES0012R
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.
NOTE:
Make sure no burrs exist in the valve stem hole of the wheel.
SEIA0047E
SEIA0048E
SEIA0049E
Transmitter nut : 5.5 N·m (0.56 kg-m, 49 in-lb)
WEIA0137E
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WT-32
REMOVAL AND INSTALLATION
Revision: August 20072004 QX56
3. Place wheel on turntable of tire machine. Ensure that transmitter
is 270 degrees from mounting/dismounting head.
NOTE:
Do not touch transmitter with mounting head.
4. Lubricate tire well, and install second side of tire as normal.
Ensure that tire does not rotate relative to rim.
5. Inflate tire and balance the wheel and tire assembly. Refer to
WT-5
.
6. Install wheel and tire assembly in appropriate wheel position on
vehicle.
NOTE:
If replacing transmitter, transmitter wake up operation must be performed. Refer to WT-15, "
Transmitter
Wake Up Operation" .
7. Adjust neutral position of steering angle sensor. Refer to BRC-62, "
Adjustment of Steering Angle Sensor
Neutral Position" .
SEIA0048E
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SERVICE DATA AND SPECIFICATIONS (SDS)
WT-33
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Revision: August 20072004 QX56
SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00030
Road WheelEES0012S
TireEES0012T
Unit: kPa (kg/cm2 , psi) Wheel type AluminumSteel
Inside Outside
Maximum radial
runout limitLateral 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
imbalanceDynamic
(at rim flange)Less than 5 g (0.18 oz) (per side)
Static (at rim flange) Less than 10 g (0.35 oz)
Tire sizeAir pressure
Conventional tire Spare tire
Full size spare tire — 240 (2.4, 35)
P265/70R18 240 (2.4, 35) —