tire pressure INFINITI FX35 2005 Repair Manual

TROUBLE DIAGNOSES WT-19
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Revision: 2005 July 2005 FX
Self-DiagnosisAES000Z7
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 immedi-
ately and turns off
after 1 second 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-18,
"Transmitter Wake Up
Operation" .
Warning lamp blinks
1 time Front LH wheel
transmitter is not
activated. Activate front LH wheel
transmitter. Refer to WT-
18, "Transmitter Wake Up
Operation" .
Warning lamp blinks
2 times Front RH wheel
transmitter is not
activated. Activate front RH wheel
transmitter. Refer to WT-
18, "Transmitter Wake Up
Operation" .
Warning lamp blinks
3 times Rear RH wheel
transmitter is not
activated. Activate rear RH wheel
transmitter. Refer to WT-
18, "Transmitter Wake Up
Operation" .
SEIA0592E
SEIA0593E
SEIA0594E
SEIA0595E
SEIA0596E

WT-20
TROUBLE DIAGNOSES
Revision: 2005 July 2005 FX
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
CONSULT-II Main Function
In a diagnosis function (main function), there are “WORK SUPPORT”, “SELF-DIAGNOSTIC RESULTS”,
“DATA MONITOR”, “ACTIVE TEST”.
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-
18, "Transmitter Wake Up
Operation" .
Warning lamp
comes on and does
not turn off The fuse for combi-
nation meter from
battery is pulled out. Check the fuse for combi-
nation 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
malfunction.

Perform CONSULT-II
Self Diagnosis. Refer to
WT-19, "
Self-Diagnosis"
.
–Perform ID Registration
if needed. Refer to WT-
16, "ID Registration Pro-
cedure" .
Turn signal
lamp Turn signal lamp
does not flash 2
times or horn does
not sound after
transmitter activa-
tion. 1. Tool J-45295
(special service
tool) battery low.
2. Ignition OFF dur- ing activation.
3. Tool J-45295 (special service
tool) not posi-
tioned correctly.
4. Transmitters already activated. 1. Install new battery.
2. Make sure ignition is ON during activation.
3. Position tool correctly during activation.
4. None
Diagnosis
Item Symptom
(Ignition switch ON) Low tire pressure warning lamp Cause Action
SEIA0597E
SEIA0598E
Diagnostic test mode Function Reference
WORK SUPPORT This mode enables a technician to adjust some devices faster and more
accurately by following the indications on CONSULT-II. WT-21, "
WORK SUP-
PORT MODE".
SELF-DIAGNOSTIC
RESULTS Self-diagnostic results can be read and erased quickly. WT-21, "
SELF-DIAG-
NOSTIC RESULTS
MODE".
DATA MONITOR Input/Output data in the control unit can be read. WT-22, "
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-22, "
ACTIVE TEST
MODE".

TROUBLE DIAGNOSES WT-21
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WORK SUPPORT MODE
Operation Procedure
1. Touch necessary test item.
2. The “Work support” screen will be displayed, so perform the fol- lowing test.
Test Item

ID Read

ID Regist
ID Read
The registered ID number is displayed.
ID Regist
Refer to WT-16, "ID Registration Procedure" .
SELF-DIAGNOSTIC RESULTS MODE
SEIA0583E
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Diagnostic item Diagnostic item is detected when ···
FLAT - TIRE - FL
FLAT - TIRE - FR
FLAT - TIRE - RR
FLAT - TIRE - RL Front-left tire pressure drops to 178 kPa (1.78 kg/cm
2 , 26 psi) or less.
Front-right tire pressure drops to 178 kPa (1.78 kg/cm2 , 26 psi) or less.
Rear-right tire pressure drops to 178 kPa (1.78 kg/cm2 , 26 psi) or less.
Rear-left tire pressure drops to 178 kPa (1.78 kg/cm2 , 26 psi) or less.
[NO-DATA] - FL
[NO-DATA] - FR
[NO-DATA] - RR
[NO-DATA] - RL Data from front-left transmitter can not be received.
Data from front-right transmitter can not be received.
Data from rear-right transmitter can not be received.
Data from rear-left transmitter can not be received.
[CHECKSUM- ERR] - FL
[CHECKSUM- ERR] - FR
[CHECKSUM- ERR] - RR
[CHECKSUM- ERR] - RL Checksum data from front-left transmitter is malfunctioning.
Checksum data from front-right transmitter is malfunctioning.
Checksum data from rear-right transmitter is malfunctioning.
Checksum data from rear-left transmitter is malfunctioning.
[PRESS DATA- ERR] - FL
[PRESS DATA- ERR] - FR
[PRESS DATA- ERR] - RR
[PRESS DATA- ERR] - RL Air pressure data from front-left transmitter is malfunctioning.
Air pressure data from front-right transmitter is malfunctioning.
Air pressure data from rear-right transmitter is malfunctioning.
Air pressure data from rear-left transmitter is malfunctioning.
[CODE- ERR] - FL
[CODE- ERR] - FR
[CODE- ERR] - RR
[CODE- ERR] - RL Function code data from front-left transmitter is malfunctioning.
Function code data from front-right transmitter is malfunctioning.
Function code data from rear-right transmitter is malfunctioning.
Function code data from rear-left transmitter is malfunctioning.

WT-22
TROUBLE DIAGNOSES
Revision: 2005 July 2005 FX
NOTE:
Before performing the self-diagnosis, be sure to register the ID, or else the actual malfunction location may be different from that dis-
played on CONSULT-II.
DATA MONITOR MODE
NOTE:
Before performing the self-diagnosis, be sure to register the ID, or else the actual malfunction location may be different from that dis-
played on CONSULT-II.
ACTIVE TEST MODE
NOTE:
Before performing the self-diagnosis, be sure to register the ID, or else the actual malfunction location may be
different from that displayed on CONSULT-II.
Operation Procedure
1. Touch necessary test item.
2. The “Active Test” screen will be displayed, so perform the follow- ing test.
Test Item

Flasher

Horn

Warning lamp

ID regist warning

Flat tire warning
[BATT - VOLT - LOW] - FL
[BATT - VOLT - LOW] - FR
[BATT - VOLT - LOW] - RR
[BATT - VOLT - LOW] - RL Battery voltage of front-left transmitter drops.
Battery voltage of front-right transmitter drops.
Battery voltage of rear-right transmitter drops.
Battery voltage of rear-left transmitter drops.
VHCL_SPEED_SIG_ERR Vehicle speed signal is error. Diagnostic item Diagnostic item is detected when ···
MONITOR CONDITION SPECIFICATION
VEHICLE SPEED Drive vehicle. Vehicle speed (km/h or MPH)
AIR PRESS FL
AIR PRESS FR
AIR PRESS RR
AIR PRESS RL

Drive vehicle for a few minutes.
Tire pressure (kPa or Psi)
or

Ignition switch ON and activation
tool is transmitting activation sig-
nals.
ID REGST FL 1
ID REGST FR 1
ID REGST RR 1
ID REGST RL 1 Ignition switch ON Registration ID: DONE
No registration ID: YET
WARNING LAMP Low tire pressure warning lamp on: ON
Low tire pressure warning lamp off: OFF
BUZZER Buzzer in combination meter on: ON
Buzzer in combination meter off: OFF
SEIA0585E

WT-26
TROUBLE DIAGNOSES
Revision: 2005 July 2005 FX
Preliminary CheckAES000Z9
BASIC INSPECTION
1. CHECK ALL TIRE PRESSURES

Check all tire pressures. Refer to WT-37, "Tire" .
OK or NG
OK >> GO TO 2.
NG >> Adjust tire pressure to specified value.
2. CHECK LOW TIRE PRESSURE WARNING LAMP ACTIVATION
1. Check low tire pressure warning lamp activation.
2. Does low tire pressure warning lamp activate for 1 second when ignition switch is turned “ON”?
Does warning lamp activate?
YES >> GO TO 3.
NO >> Check fuse and combination meter.
3. CHECK CONNECTOR
1. Disconnect BCM harness connectors M3 and M4.
2. Check terminals for damage or loose connection.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace damaged parts.
4. CHECK TRANSMITTER TOOL

Check activation tool battery.
OK or NG
OK >> Perform self-diagnosis.
NG >> Replace activation tool battery.

TROUBLE DIAGNOSES WT-27
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Malfunction Code/Symptom ChartAES000ZA
Code/Symptom Malfunction part Reference
page
15
16
17
18 Front-left tire pressure drops to 178 kPa (1.78 kg/cm
2 , 26 psi) or
less.
Front-right tire pressure drops to 178 kPa (1.78 kg/cm
2 , 26 psi) or
less.
Rear-right tire pressure drops to 178 kPa (1.78 kg/cm
2 , 26 psi) or
less.
Rear-left tire pressure drops to 178 kPa (1.78 kg/cm
2 , 26 psi) or
less. —
21
22
23
24 Transmitter no data (front - left)
Transmitter no data (front - right)
Transmitter no data (rear - right)
Transmitter no data (rear - left) WT-28
31
32
33
34 Transmitter checksum error (front - left)
Transmitter checksum error (front - right)
Transmitter checksum error (rear - right)
Transmitter checksum error (rear - left) WT-28
35
36
37
38 Transmitter pressure data error (front - left)
Transmitter pressure data error (front - right)
Transmitter pressure data error (rear - right)
Transmitter pressure data error (rear - left) WT-29
41
42
43
44 Transmitter function code error (front - left)
Transmitter function code error (front - right)
Transmitter function code error (rear - right)
Transmitter function code error (rear - left) WT-28
45
46
47
48 Transmitter battery voltage low (front - left)
Transmitter battery voltage low (front - right)
Transmitter battery voltage low (rear - right)
Transmitter battery voltage low (rear - left) WT-28
52 Vehicle speed signal
WT-30
Warning lamp does not come on when
ignition switch is turned on. Fuse or combination meter
BCM connector or circuit
BCM WT-31
Warning lamp stays on when ignition
switch is turned on. Combination meter
BCM connector or circuit
BCM WT-31
Warning lamp blinks when ignition
switch is turned on. BCM connector or circuit
BCM
Transmitter's mode off
ID registration not yet WT-33
Turn signal lamp blinks when ignition
switch is turned on. BCM connector or circuit
BCM WT-34
ID registration can not be operated. Transmitter
Remote keyless entry receiver connector or circuit
Remote keyless entry receiver
BCM connector or circuit
BCM WT-34

WT-28
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
Revision: 2005 July 2005 FX
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMSPFP:00000
Inspection 1: Transmitter or Control Unit (BCM)AES000ZB
MALFUNCTION CODE NO. 21, 22, 23 OR 24
1. CHECK CONTROL UNIT

Drive for several minutes. Check all tire pressures with CONSULT-II “DATA MONITOR ITEM”.
Are all tire pressures displayed 0 kPa?
YES >> GO TO 2.
NO >> GO TO 3.
2. CHECK REMOTE KEYLESS ENTRY RECEIVER CONNECTOR
1. Disconnect remote keyless entry receiver harness connector M98.
2. Check terminals for damage or loose connection.
3. Reconnect harness connector.
OK or NG
OK >> Replace BCM refer to BCS-16, "Removal and Installation of BCM" , then GO TO 3.
NG >> Repair or replace remote keyless entry receiver harness connector.
3. ID REGISTRATION

Perform ID registration of all transmitters.
Is there any tire that ID can not be registered to?
YES >> Replace transmitter of the tire, then GO TO 5.
NO >> GO TO 4.
4. VEHICLE DRIVING

Drive at a speed of 40 km/h (25 MPH) or more for several minutes without stopping.
Check all tire pressures with CONSULT-II “DATA MONITOR ITEM” within 15 minutes after vehicle speed
becomes 17 km/h (11 MPH).
Does
“DATA MONITOR ITEM” display tire pressure as normal without any warning lamp?
YES >> INSPECTION END
NO >> GO TO 5.
5. ID REGISTRATION AND VEHICLE DRIVING
1. Perform ID registration of all transmitters.
2. Drive at a speed of 40 km/h (25 MPH) or more for 3 minutes, and then drive the vehicle at any speed for 10 minutes. Then check all tire pressures with CONSULT-II “DATA MONITOR ITEM” within 5 minutes.
Does
“DATA MONITOR ITEM” display tire pressure as normal without any warning lamp?
YES >> INSPECTION END
NO >> GO TO the inspection applicable to DTC.
Inspection 2: Transmitter - 1AES000ZC
MALFUNCTION CODE NO. 31, 32, 33, 34, 41, 42, 43, 44, 45, 46, 47 OR 48
1. ID REGISTRATION (CORRECTION OF TRANSMITTER LOCATION)
1. Perform ID registration of all transmitters.
2. Drive at a speed of 40 km/h (25 MPH) or more for 3 minutes, and then drive the vehicle at any speed for 10 minutes.
>> GO TO 2.

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS WT-29
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2. REPLACE TRANSMITTER
1. Check low tire pressure warning condition again, replace malfunctioning transmitter.
2. Perform ID registration of all transmitters.
Can ID registration of all transmitters be completed?
YES >> GO TO 3.
NO >> GO TO the inspection 1. Refer to WT-28, "
Inspection 1: Transmitter or Control Unit (BCM)" .
3. VEHICLE DRIVING

Drive at a speed of 40 km/h (25 MPH) or more for 3 minutes, and then drive the vehicle at any speed for
10 minutes. Then check all tire pressures with CONSULT-II “DATA MONITOR ITEM” within 5 minutes.
Does
“DATA MONITOR ITEM” displayed tire pressure as normal without any warning lamp?
YES >> INSPECTION END.
NO >> Replace malfunctioning transmitter, and perform “Step 3” again.
Inspection 3: Transmitter - 2AES000ZD
MALFUNCTION CODE NO. 35, 36, 37 OR 38
1. CHECK ALL TIRE PRESSURES

Check all tire pressures. Refer to WT-37, "Tire" .
Are there any tires whose pressure is
“64 psi” or more?
YES >> Adjust tire pressure to specified value.
NO >> GO TO 2.
2. VEHICLE DRIVING
1. Perform ID registration of all transmitters.
2. Drive at a speed of 40 km/h (25 MPH) or more for several minutes without stopping. Check all tire pressures with CONSULT-II “DATA MONITOR ITEM” within 15 minutes after vehicle speed
become 17 km/h (11 MPH).
>> Replace transmitter with new one if “DATA MONITOR ITEM” displayed 64 psi or more. Then GO TO 3.
3. ID REGISTRATION AND VEHICLE DRIVING
1. Perform ID registration of all transmitters.
2. Drive at a speed of 40 km/h (25 MPH) or more for 3 minutes, and then drive the vehicle at any speed for 10 minutes. Then check all tire pressures with CONSULT-II “DATA MONITOR ITEM” within 5 minutes.
Does
“DATA MONITOR ITEM” display tire pressure as normal without any warning lamp?
YES >> INSPECTION END
NO >> GO TO the inspection applicable to DTC.

TROUBLE DIAGNOSIS FOR SYMPTOMS WT-31
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TROUBLE DIAGNOSIS FOR SYMPTOMSPFP:00007
Inspection 1: Warning Lamp Does Not Come On When Ignition Switch Is Turned
On
AES000ZF
DIAGNOSTIC PROCEDURE
1. CHECK SELF-DIAGNOSIS RESULTS
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, go to GI-39, "
CONSULT-II Data Link Connector (DLC) Circuit" .
4. Select “BCM C/U” on “SELECT WORK ITEM” screen, and select “SELF-DIAG RESULTS”.
5. Select “SELF-DIAG RESULTS” on “SELECT DIAG MODE” screen.
6. 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, "Precautions When Using CON-
SULT-II" .
NO >> No malfunction. GO TO 2.
2. CHECK COMBINATION METER

Check combination meter function.
OK or NG
OK >> GO TO 3.
NG >> Check combination meter. Refer to DI-5, "
System Description" .
3. CHECK LOW TIRE PRESSURE WARNING LAMP

Disconnect BCM harness connectors M3 and M4.
Does the warning lamp activate?
YES >> Replace BCM. Refer to BCS-16, "Removal and Installation of BCM" .
NO >> Check combination meter and repair or replace.
Inspection 2: Warning Lamp Stays On When Ignition Switch Is Turned OnAES000ZG
DIAGNOSTIC PROCEDURE
1. CHECK CONNECTOR
1. Disconnect BCM harness connectors M3 and M4.
2. Check terminals for damage or loose connections.
OK or NG
OK >> GO TO 2.
NG >> Repair or replace damaged parts.

TROUBLE DIAGNOSIS FOR SYMPTOMS WT-33
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Revision: 2005 July 2005 FX
Inspection 3: Warning Lamp Blinks When Ignition Switch Is Turned OnAES000ZH
NOTE:
If warning lamp blink below, the system is normal.
Blink Mode A

This mode shows transmitter status is OFF-mode.
Perform transmitter wake up operation. Refer to WT-18, "
Trans-
mitter Wake Up Operation" .
DIAGNOSTIC PROCEDURE
1. CHECK CONNECTOR
1. Disconnect BCM harness connector M3.
2. Check terminals for damage or loose connections.
OK or NG
OK >> GO TO 2.
NG >> Repair or replace damaged parts.
2. CHECK TIRE PRESSURE WARNING CHECK SWITCH CIRCUIT

Check continuity between BCM harness connector M3 terminal 15 (G) and ground.
OK or NG
OK >> Replace BCM. Refer to BCS-16, "Removal and Installa-
tion of BCM" .
NG >> Repair or replace harness connector.
SEIA0347E
Te r m i n a l Continuity
(+) (–)
Connector Te r m i n a l
(Wire color) Ground Should not exist.
M3 15 (G)
SEIA0438E