Nissan Murano Z50 (2004 year). Manual - part 221

LOW TIRE PRESSURE WARNING SYSTEM

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LOW TIRE PRESSURE WARNING SYSTEM

PFP:40300

System Components

AES000HG

System Description

AES000HH

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.

SEIA0309E

SEIA0203E

WT-8

LOW TIRE PRESSURE WARNING SYSTEM

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ANTENNA

Receives the radio wave signal transmitted by the transmitter.

LOW TIRE PRESSURE WARNING CONTROL UNIT 

Reads the radio wave signal received by the antenna, and controls
the warning lamp and the buzzer operations as shown below. It also
has a judgement function to detect a system malfunction.

DISPLAY UNIT

Displays the air pressure of each tire.

●

After the ignition switch is turned ON, the pressure values are
not be displayed until the data of each wheel stabilizes.

SEIA0346E

SEIA0306E

Condition

Warning lamp

Buzzer

Less than 190 kPa (1.9 kg/cm

2

  , 27 psi)

[Flat tire]

ON

Sounds for 

10 sec.

System malfunction

ON

OFF

SEIA0307E

SEIA0310E

CAN COMMUNICATION

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CAN COMMUNICATION

PFP:23710

System Description

AES000OJ

CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
Refer to 

LAN-8, "CAN COMMUNICATION"

 .

WT-10

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TROUBLE DIAGNOSES

PFP:00004

Schematic

AES000HK

TEWA0017E

TROUBLE DIAGNOSES

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Wiring Diagram

AES000HL

TEWA0018E

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TEWA0019E

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TEWA0020E

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Control Unit Input/Output Signal Standard

AES000HM

Standards using a circuit tester and oscilloscope.

(

) : Wire color

ID Registration Procedure

AES000HN

ID REGISTRATION WITH TRANSMITTER ACTIVATION TOOL

This procedure must do after replace transmitter or low tire pressure warning control unit.

1.

Turn ignition switch "OFF".

2.

Connect CONSULT-II and CONSULT-II CONVERTER to data link connector.

3.

Touch “AIR PRESSURE MONITOR”, “WORK SUPPORT” and “ID REGIST”.
NOTE:
If "AIR PRESSURE MONITOR" is not indicated, go to 

GI-39, "CONSULT-II Data Link Connector (DLC)

Circuit"

  .

4.

With the transmitter activation tool (J-45295) pushed against the
front-left transmitter position of the tire air valve, press the button
then keep 5 seconds.

5.

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 hazard warning lamp blinks.

6.

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.

Measurement terminal

Measuring point

Standard value

+

–

8 (G/W)

Ground

Tire pressure warning check 
switch

Always

Approx. 5V

9 (L)

Data line (CAN H)

—

—

11 (P/B)

Ignition switch ON or ACC

Ignition switch ON

Battery voltage (Approx. 12 V)

12 (Y/R)

Battery power supply 

Always

Battery voltage (Approx. 12 V)

20 (B)

GND

—

Approx. 0 V

21 (Y)

Data line (CAN L)

—

—

22 (G/R)

Hazard

Hazard lamp switch OFF

Battery voltage (Approx. 12 V)

Hazard lamp switch ON

Approx. 0 V

24 (G)

Ignition switch ON or START

Battery voltage (Approx. 12 V)

25 Antenna

—

—

SEIA0460E

Activation tire position

Buzzer

Hazard warning lamp

CONSULT-II

1

Front  LH

Once

2 times flashing

“YET”

↓

“DONE”

2

Front RH

2 times

3

Rear LH

3 times

4

Rear RH

4 times

TROUBLE DIAGNOSES

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ID REGISTRATION WITHOUT TRANSMITTER ACTIVATION TOOL

1.

Turn ignition switch "OFF".

2.

Connect CONSULT-II and CONSULT-II CONVERTER to data link connector.

3.

Touch “AIR PRESSURE MONITOR”, “WORK SUPPORT” and “ID REGIST”.

NOTE:
If "AIR PRESSURE MONITOR" is not indicated, go to 

GI-39, "CONSULT-II Data Link Connector (DLC)

Circuit"

  .

4.

Adjust the tire pressure to the values shown in the table below for ID registration, and drive the vehicle at
15 km/h (9.4 MPH) or more for a few minutes.

5.

After completing all ID registrations, press “END” to complete the procedure.

Tire position

Tire pressure kPa (kg/cm

2

  , psi)

Front – Left

250 (2.5, 36)

Front – Right

230 (2.3, 33)

Rear – Right

210 (2.1, 30)

Rear – Left

190 (1.9, 27)

Activation tire position

CONSULT-II

Front LH

“YET”

↓

“DONE”

Front RH

Rear LH

Rear RH

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Transmitter Wake Up Operation

AES000HO

WITH TRANSMITTER ACTIVATION TOOL

1.

With the transmitter activation tool (J-45295) pushed against the
front-left transmitter, press the button then keep 5 seconds.

●

When ignition switch ON, then warning lamp is blinks as fol-
low diagram transmitter must be waken up.

2.

Register the IDs in order from FR LH, FR RH, RR RH or RR LH. When wake up of each wheel has been
completed, a hazard warning lamp blinks.

3.

After completing wake up of all transmitters, make sure tire pressure warning lamp go out.

SEIA0460E

SEIA0351E

TROUBLE DIAGNOSES

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Self-Diagnosis

AES000HP

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 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 the self-
diagnostic (check) terminal. The malfunction location is indicated by the warning lamp flashing and the buzzer
sounds.

CONSULT-II
CONSULT-II Main Function

In a diagnosis function (main function), there are “WORK SUPPORT”, “SELF-DIAGNOSTIC RESULTS”,
“DATA MONITOR”, “CAN DIAG SUPPORT MNTR”.

CONSULT-II Application to Low Tire Pressure Warning System

×

 : Applicable

 – : Not applicable

Self-Diagnostic Results Mode

Diagnostic test mode

Function

WORK SUPPORT

This mode enables a technician to adjust some devices faster and more accurately by following 
the indications on CONSULT-II.

SELF-DIAGNOSTIC 
RESULTS

Self-diagnostic results can be read and erased quickly.

DATA MONITOR

Input/Output data in the control unit can be read.

CAN DIAG SUPPORT MNTR

The results of transmit/receive diagnosis of communication can be read.

ITEM

SELF-DIAGNOSTIC RESULTS

DATA MONITOR

Front - Left transmitter

×

×

Front - Right transmitter

×

×

Rear - Left transmitter

×

×

Rear - Right transmitter

×

×

Warning lamp

—

×

Vehicle speed

×

×

Buzzer (in control unit)

—

×

CAN Communication

×

×

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 190 kPa (1.9 kg/cm

2

  , 27 psi) or less

Front-right tire pressure drops to 190 kPa (1.9 kg/cm

2

  , 27 psi) or less

Rear-right tire pressure drops to 190 kPa (1.9 kg/cm

2

  , 27 psi) or less

Rear-left tire pressure drops to 190 kPa (1.9 kg/cm

2

  , 27 psi) or less

[NO-DATA] - FL
[NO-DATA] - FR
[NO-DATA] - RR
[NO-DATA] - RL

Data from front-left transmitter cannot be received.
Data from front-right transmitter cannot be received.
Data from rear-right transmitter cannot be received.
Data from rear-left transmitter cannot 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.

[PRESSDATA- ERR] - FL
[PRESSDATA- ERR] - FR
[PRESSDATA- ERR] - RR
[PRESSDATA- 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.

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NOTE:
Before performing the self-diagnosis, be sure to register the ID. Or, the actual malfunction location may be different from that displayed
on CONSULT-II.

Data Monitor Mode

NOTE:
Before performing the self-diagnosis, be sure to register the ID. Or, the actual malfunction location may be different from that displayed
on CONSULT-II.

[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.

[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

VHCL SPEED SE

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 signals. 

ID REGST FL
ID REGST FR
ID REGST RR
ID REGST RL

Ignition switch ON

Registration ID: DONE
No registration ID: YET

WARNING LAMP

Warning lamp on: ON
Warning lamp off: OFF

BUZZER

Buzzer in Low tire pressure warning control unit on: ON
Buzzer in Low tire pressure warning control unit off: OFF

TROUBLE DIAGNOSES

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How to Perform Trouble Diagnosis for Quick and Accurate Repair

AES000HQ

INTRODUCTION

●

Before troubleshooting, verify customer complaints.

●

If a vehicle malfunction is difficult to reproduce, harnesses, harness connectors or terminals may be mal-
functioning. Hold and shake these parts to make sure they are securely connected.

●

When using a circuit tester to measure voltage or resistance of each circuit, be careful not to expand con-
nector terminals. 

WORK FLOW

Preliminary check :

WT-20

Self-diagnosis :

WT-17

Trouble diagnosis for symptoms :

WT-25

SEIA0100E

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Preliminary Check

AES000HR

BASIC INSPECTION

1. 

CHECK ALL TIRES PRESSURES

●

Check all tires pressures.

OK or NG

OK

>> GO TO 2.

NG

>> Adjust tire pressure to specified value.

2. 

CHECK WARNING LAMP ACTIVATION

1.

Check warning lamp activation.

2.

Does warning lamp activate for 1 seconds when ignition switch is turned “ON”. 

Does warning lamp active?

YES

>> GO TO 3.

NO

>> Check fuse and combination meter.

3. 

CHECK CONNECTOR

1.

Disconnect low tire pressure warning control unit harness connectors M81 and M205.

2.

Check terminals for damage or loose connection. 

3.

Reconnect harness connector.

OK or NG

OK

>> GO TO 4.

NG

>> Repair or replace damaged parts.

4. 

CHECK TRANSMITTER ACTIVATION TOOL

●

Check transmitter activation tool battery.

OK or NG

OK

>> Carry out self-diagnosis.

NG

>> Replace transmitter activation tool battery.

Tire pressure

: 230 kPa (2.3 kg/cm

2

  , 33 psi)

TROUBLE DIAGNOSES

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Malfunction Code/Symptom Chart

AES000HS

Code/Symptom

Malfunction part

Reference 

page

15
16
17
18

Front-left tire pressure drops to 190 kPa (1.9 kg/cm

2

  , 27 psi) or less

Front-right tire pressure drops to 190 kPa (1.9 kg/cm

2

  , 27 psi) or less

Rear-right tire pressure drops to 190 kPa (1.9 kg/cm

2

  , 27 psi) or less

Rear-left tire pressure drops to 190 kPa (1.9 kg/cm

2

  , 27 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-22

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-22

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-22

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-22

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-22

52

Vehicle speed signal

WT-24

Warning lamp does not come on when 
ignition switch is turned on.

Fuse or unified meter and A/C amp.
Low tire pressure warning control unit connector or circuit
Low tire pressure warning control unit 

WT-25

Warning lamp stays on when ignition 
switch is turned on.

Fuse or unified meter and A/C amp.
Low tire pressure warning control unit connector or circuit
Low tire pressure warning control unit

WT-26

Warning lamp blinks when ignition 
switch is turned on.

Low tire pressure warning control unit harness connector or circuit
Low tire pressure warning control unit
Transmitter's mode off
ID registration not yet

WT-28

Hazard warning lamp blinks when igni-
tion switch is turned on.

Low tire pressure warning control unit harness connector or circuit
Low tire pressure warning control unit

WT-29

“TIRE PRESSURE” information in dis-
play does not exist.

Fuse
Display unit
Low tire pressure warning control unit 

WT-30

ID registration can not be completed.

Transmitter
Antenna harness connector or circuit
Antenna

WT-30

WT-22

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS

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TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS

PFP:00000

Inspection 1: Transmitter or Low Tire Pressure Warning Control Unit

AES000HT

MALFUNCTION CODE NO. 21, 22, 23 OR 24

1. 

CHECK CONTROL UNIT

●

Drive for several minutes. Check all tires' pressure with CONSULT-II “DATA MONITOR ITEM”.

Are all tires' pressure displayed 0 kPa?

YES

>> GO TO 2.

NO

>> GO TO 3.

2. 

CHECK ANTENNA CONNECTOR

●

Check antenna and feeder connector M205 for damage or loose connections.

OK or NG

OK

>> Replace control unit, then GO TO 3.

NG

>> Repair or replace antenna or feeder connector.

3. 

ID REGISTRATION

●

Carry out ID registration of all transmitters.

Is there a tire that cannot register ID?

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 tires' pressure with CONSULT-II “DATA MONITOR ITEM” within 15 minutes after vehicle speed
becomes 17 km/h (11 MPH).

Does “DATA MONITOR ITEM” displayed tire pressure as normal without any warning lamp?

YES

>> INSPECTION END.

NO

>> GO TO 5.

5. 

ID REGISTRATION AND VEHICLE DRIVING

1.

Carry out 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 tires' pressure 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

>> GO TO the inspection applicable to DTC.

Inspection 2: Transmitter - 1

AES000HU

MALFUNCTION CODE NO. 31, 32, 33, 34, 41, 42, 43, 44, 45, 46, 47 OR 48

1. 

ID REGISTRATION (CORRECTION OF TRANSMITTER LOCATION)

1.

Carry out 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.