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
WT-10
TROUBLE DIAGNOSES
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TROUBLE DIAGNOSES
PFP:00004
Schematic
AES000HK
TEWA0017E
TROUBLE DIAGNOSES
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Wiring Diagram
AES000HL
TEWA0018E
WT-12
TROUBLE DIAGNOSES
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TEWA0019E
TROUBLE DIAGNOSES
WT-13
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TEWA0020E
WT-14
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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)
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)
.
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
WT-16
TROUBLE DIAGNOSES
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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.
WT-18
TROUBLE DIAGNOSES
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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 :
Self-diagnosis :
Trouble diagnosis for symptoms :
SEIA0100E
WT-20
TROUBLE DIAGNOSES
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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)
31
32
33
34
Transmitter checksum error (front - left)
Transmitter checksum error (front - right)
Transmitter checksum error (rear - right)
Transmitter checksum error (rear - left)
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)
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)
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)
52
Vehicle speed signal
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
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
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
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
“TIRE PRESSURE” information in dis-
play does not exist.
Fuse
Display unit
Low tire pressure warning control unit
ID registration can not be completed.
Transmitter
Antenna harness connector or circuit
Antenna
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.
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