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LOW TIRE PRESSURE WARNING SYSTEM WT-11
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Revision: 2006 December 2006 FX35/FX45
BCM (BODY CONTROL MODULE)
The BCM reads the air pressure signal received by the remote key-
less entry receiver, and controls the low tire pressure warning lamp
and the buzzer operations. It also has a judgement function to detect
a system malfunction.
LOW TIRE PRESSURE WARNING LAMP
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 warn-
ing lamp and buzzer are activated.
Low Tire pressure Warning Lamp Indication
Note 1: Standard air pressure is for 220 kpa (2.2 kg/cm2 , 32 psi) vehicles.
DISPLAY UNIT
Displays the air pressure of each tire.
After the ignition switch is turned ON, the pressure values are
not displayed until the data of each wheel stabilizes.
SEIA0591E
SEIA0434E
Condition Warning lamp Buzzer
Less than 178 kPa (1.78 kg/cm
2 , 26 psi) [Note 1] ON Sounds for 10 sec.
Low tire pressure warning system malfunction [Other diagnostic item] Warning lamp flashes 1 min,
then turns ON OFF
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WT-18
TROUBLE DIAGNOSES
Revision: 2006 December 2006 FX35/FX45
ID Registration ProcedureNES000GV
ID REGISTRATION WITH ACTIVATION TOOL
This procedure must be done after replacement of a transmitter or BCM.
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 performs 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. Select “BCM” on “SELECT SYSTEM” screen. NOTE:
If “BCM” is not indicated, go to GI-39, "
CONSULT-II Data Link Connector (DLC) Circuit" .
4. Select “AIR PRESSURE MONITOR” on “SELECT WORK ITEM” screen.
5. Select “WORK SUPPORT” on “SELECT DIAG MODE” screen, and select “ID REGIST”.
6. With the activation tool (J-45295) pushed against the front-left transmitter position of the tire air valve, press and hold the but-
ton 5 seconds.
7. Register the IDs in order from FR LH, FR RH, RR RH or RR LH. When ID registration of each wheel has been completed, a buzzer sounds and turn signal lamp (LH/ RH) blinks.
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.
46 (BR/W)
Ground Turn signal (right)
Ignition switch ON
Combination switch is turn
signal (right)
49 (B) Ground — 0V
52 (B)
55 (G) Battery power supply (F/L) Always Battery voltage (12V) Te r m i n a l
Item Condition Voltage (V)
Approx. value
+ (wire color) –
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SEIA0460E
Activation tire position Buzzer Turn signal lamp CONSULT-II
1 Front LH Once
2 times flashing “YET”
↓
“DONE”
2Front RH 2 times
3Rear RH 3 times
4 Rear LH 4 times
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WT-20
TROUBLE DIAGNOSES
Revision: 2006 December 2006 FX35/FX45
Transmitter Wake Up OperationNES000GW
WITH ACTIVATION TOOL
1. With the activation tool (J-45295) pushed against the front-left transmitter, press the button for 5 seconds.
When ignition switch ON, as the low tire pressure warning
lamp blinks per the following diagram, the respective transmit-
ter then must be woken up.
2. Register the ID of wheel that warning lamp flashes. When wake up of registered wheel has been com- pleted, turn signal lamp flashes two times.
3. After completing wake up all transmitters, make sure low tire pressure warning lamp goes out.
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TROUBLE DIAGNOSES WT-21
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Revision: 2006 December 2006 FX35/FX45
Self-DiagnosisNES000GX
DESCRIPTION
During driving, the low tire pressure warning system receives the signal transmitted from the transmitter
installed in each wheel, and gives alarms when the tire pressure becomes low. The control unit (BCM) of this
system has pressure judgement and trouble diagnosis functions.
FUNCTION
When the low tire pressure warning system detects low inflation pressure or another unusual symptom, the
warning lamps in the combination meter comes on. To start the self-diagnostic results mode, ground terminal
of the tire pressure warning check connector. The malfunction location is indicated by the warning lamp flash-
ing and the buzzer sounds.
LOW TIRE PRESSURE WARNING LAMP DIAGNOSTIC CHART
Diagnosis
Item Symptom
(Ignition switch ON) Low tire pressure warning lamp Cause Action
Low tire pres-
sure warning
lamp Warning lamp comes
on immediately and
turns off after 1 sec-
ond All wheel transmit-
ters are “activated”
(working). None (system OK)
Warning lamp blinks
on for 2 seconds,
then turns off for 0.2
seconds-repeats All wheel transmit-
ters are not acti-
vated. Activate all wheel transmit-
ters. Refer to WT-20,
"Transmitter Wake Up Oper-
ation" .
Warning lamp blinks
1 time Front LH wheel
transmitter is not
activated. Activate front LH wheel
transmitter. Refer to WT-20,
"Transmitter Wake Up Oper-
ation" .
Warning lamp blinks
2 times Front RH wheel
transmitter is not
activated. Activate front RH wheel
transmitter. Refer to WT-20,
"Transmitter Wake Up Oper-
ation" .
Warning lamp blinks
3 times Rear RH wheel
transmitter is not
activated. Activate rear RH wheel
transmitter. Refer to WT-20,
"Transmitter Wake Up Oper-
ation" .
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WT-22
TROUBLE DIAGNOSES
Revision: 2006 December 2006 FX35/FX45
NOTE:
If more than one wheel transmitter is NOT activated, the warning lamp blinking patterns for those wheels will combine. (Example : one
blink/OFF/three blinks = Rear LH and Rear RH transmitters are not activated.)
CONSULT-II FunctionNES000KR
FUNCTION
CONSULT-II can display each self-diagnostic item using the diagnostic test modes shown following.
CONSULT-II SETTING PROCEDURE
Refer to GI-38, "CONSULT-II Start Procedure" .
Low tire pres-
sure warning
lamp Warning lamp blinks
4 times Rear LH wheel
transmitter is not
activated. Activate rear LH wheel
transmitter. Refer to WT-20,
"Transmitter Wake Up Oper-
ation" .
Warning lamp comes
on and does not turn
off The fuse for combi-
nation meter from
battery is pulled out. Check the fuse for combina-
tion meter from battery.
Install or replace (if needed).
BCM connector
pulled out. Check BCM connector. Re-
connect if needed.
Low tire pressure or
low tire pressure
warning system mal-
function.
Perform CONSULT-II Self
Diagnosis. Refer to WT-
21, "Self-Diagnosis" .
–Perform ID Registration if
needed. Refer to WT-18,
"ID Registration Proce-
dure" .
Turn signal
lamp Turn signal lamp
does not flash 2
times or horn does
not sound after trans-
mitter activation. 1. Tool J-45295 (spe-
cial service tool)
battery low.
2. Ignition OFF dur- ing activation.
3. Tool J-45295 (spe- cial service tool)
not positioned cor-
rectly.
4. Transmitters already activated. 1. Install new battery.
2. Make sure ignition is ON during activation.
3. Position tool correctly dur- ing activation.
4. None
Diagnosis
Item Symptom
(Ignition switch ON) Low tire pressure warning lamp Cause Action
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Diagnostic test mode Function Reference
WORK SUPPORT This mode enables a technician to adjust some devices faster and more accu-
rately by following the indications on CONSULT-II. WT-23, "
WORK SUP-
PORT MODE".
SELF-DIAGNOSTIC
RESULTS Self-diagnostic results can be read and erased quickly. WT-23, "
SELF-DIAGNOS-
TIC RESULTS MODE".
DATA MONITOR Input/Output data in the control unit can be read. WT-24, "
DATA MONITOR
MODE".
ACTIVE TEST Diagnostic Test Mode in with CONSULT-II drives some actuators apart from
the control unit (BCM) and also shifts some parameters in a specified range. WT-24, "
ACTIVE TEST
MODE".
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WT-38
REMOVAL AND INSTALLATION
Revision: 2006 December 2006 FX35/FX45
3. Place wheel on turntable of tire machine. Ensure that transmitter is 270 degree from mounting head when second side of tire is
fitted.
NOTE:
Do not touch transmitter at mounting head.
4. Lubricate tire well and fit second side of tire as normal. Ensure that tire does not rotate relative to rim.
5. Inflate tire and fit to appropriate wheel position.
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SERVICE DATA WT-39
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Revision: 2006 December 2006 FX35/FX45
SERVICE DATAPFP:00030
Road WheelNES000HB
TireNES000HC
Unit: kPa (kg/cm2 , psi)
Kind of wheel Aluminum Steel (for emergency use)
Maximum radial runout limit Lateral deflection Less than 0.3 mm (0.012 in) Less than 1.5 mm (0.059 in)
Vertical deflection Less than 0.3 mm (0.012 in) Less than 1.5 mm (0.059 in)
Maximum allowable unbalance Dynamic (At rim flange) Less than 5.0 g (0.2 oz) (per side) —
Static (At rim flange) Less than 20 g (0.7 oz) —
Tire size Air pressure
Front Rear
P265/60R18 109V 220 (2.2, 32) 220 (2.2, 32)
P265/50R20 106V 220 (2.2, 32) 220 (2.2, 32)
T175/90D18 110M 420 (4.2, 60) 420 (4.2, 60)