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WT-8
LOW TIRE PRESSURE WARNING SYSTEM
Revision: November 20092006 QX56
LOW TIRE PRESSURE WARNING SYSTEMPFP:40300
System ComponentsEES001I2
System DescriptionEES001I3
TRANSMITTER
A sensor-transmitter integrated with a valve is installed on a wheel,
and transmits a detected air pressure signal in the form of a radio
wave.
REMOTE KEYLESS ENTRY RECEIVER
Receives the air pressure signal transmitted by the transmitter in
each wheel.
WEIA0081E
WEIA0137E
LEIA0069E
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LOW TIRE PRESSURE WARNING SYSTEMWT-9
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Revision: November 2009 2006 QX56
BCM (BODY CONTROL MODULE)
Reads the air pressure signal received by the remote keyless entry
receiver, and controls the low tire pressure warning lamp and the
buzzer operations as shown below. It also has a judgement function
to detect a system malfunction.
WARNING LAMP AND BUZZER
Indicates low tire pressure or system malfunction.
COMBINATION METER
The combination meter receives tire pressure status from the BCM using CAN communication. When a low
tire pressure condition is sensed by the BCM, the combination meter low tire pressure warning lamp and
buzzer are activated.
DISPLAY UNIT
Displays the air pressure of each tire.
After the ignition switch is turned on, the pressure values will not
be displayed until the data of each wheel is received.
LEIA0068E
ConditionWarning lamp Buzzer
Less than 193 kPa (2.0 kg/cm
2 , 28 psi)
[Flat tire] ON
OFF
System malfunction After key ON,
flashes once per second for 1
minute, then stays ON. OFF
System normal ON for 1 second
after ignition ON OFF
LEIA0055E
WEIA0082E
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WT-10
CAN COMMUNICATION
Revision: November 20092006 QX56
CAN COMMUNICATIONPFP:23710
System DescriptionEES001I4
Refer to LAN-26, "CAN COMMUNICATION" .
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TROUBLE DIAGNOSESWT-11
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TROUBLE DIAGNOSESPFP:00004
Wiring Diagram – T/WARN –EES001I5
WEWA0047E
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WT-12
TROUBLE DIAGNOSES
Revision: November 20092006 QX56
WEWA0048E
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TROUBLE DIAGNOSESWT-13
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Terminals and Reference Values for BCMEES001I6
( ): Wire colorTerminals
ItemCondition Voltage (V)
(Approx.)
+ –
15 (L/W)
Ground Tire pressure warning check
connector
—
5
18 (P) Remote keyless entry receiver
(Ground) —
0
19 (V/W) Remote keyless entry receiver
(Power supply) Stand-by
Press any of the electronic
switches
20 (G/W) Remote keyless entry receiver
(Signal) Stand-by
Press any of the electronic
switches
38 (W/L) Ignition switch Ignition switch ON or START Battery voltage
39 (L) Data line (CAN-H) ——
40 (P) Data line (CAN-L) ——
67 (B) GND —0
70 (W/B) Battery power supply —Battery voltage
OCC3879D
OCC3882D
OCC3881D
OCC3880D
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WT-14
TROUBLE DIAGNOSES
Revision: November 20092006 QX56
ID Registration ProcedureEES0025P
ID REGISTRATION WITH TRANSMITTER ACTIVATION TOOL
NOTE:
This procedure must be done after replacement of a low tire pressure warning transmitter or BCM.
New replacement transmitters are provided "asleep" and must first be "woken up" using Transmitter
Activation Tool J-45295 before ID registration can be performed.
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunction might be detected
during self-diagnosis depending on control unit which carries out CAN communication.
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. Touch “BCM” on "SELECT SYSTEM" screen.
NOTE:
If "BCM" is not indicated, go to GI-40, "
CONSULT-II Data Link
Connector (DLC) Circuit" .
4. Select “AIR PRESSURE MONITOR ” on "SELECT TEST ITEM" screen.
5. Select “WORK SUPPORT ” on "SELECT DIAG MODE" screen,
and select "ID REGIST".
BCIA0029E
BCIA0030E
BCIA0031E
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TROUBLE DIAGNOSESWT-15
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6. Push the transmitter activation tool against the tire near the front
left transmitter. Press the button for 5 seconds.
7. Register the IDs in order from FR LH, FR RH, RR RH and RR LH. When ID registration of each wheel has been completed, a buzzer sounds and the hazard warning lamps flash.
8. After completing all ID registrations, press “END” to complete the procedure.
NOTE:
Be sure to register the IDs in order from FR LH, FR RH, RR RH, to RR LH, or the self-diagnostic results dis-
play will not function properly. Tool number : (J-45295)
SEIA0101E
Activation tire position
BuzzerHazard warning lamp CONSULT-II
1 Front LH Once
2 times flashing “
YET ”
↓
“ DONE ”
2F
ro n t R H 2 tim es
3R ear R H 3 tim es
4 Rear LH 4 times