Infiniti M45 (Y34). Manual — part 802
TROUBLE DIAGNOSES
WT-13
C
D
F
G
H
I
J
K
L
M
A
B
WT
Control Unit Input/Output Signal Standard
AES0008B
Standards using a circuit tester and oscilloscope.
Measurement
terminal
Measuring point
Standard value
+
–
1
Ground
Battery Power supply
Always
Battery voltage (Approx. 12V)
2
Ignition switch ON or START
Ignition switch ON
Battery voltage (Approx. 12V)
3
Tire pressure warning lamp
Tire pressure warning lamp
turns ON
Approx. 0V
Tire pressure warning lamp
turns OFF
Battery voltage (Approx. 12V)
4
Ignition switch ON or ACC
Ignition switch ON
Battery voltage (Approx. 12V)
5
Communication line (+)
Always
6
Communication line (–)
Always
7
Communication line GND
—
Approx. 0V
8
Tire pressure warning check switch
Always
Approx. 5V
9
Combination flasher unit
Hazard lamp switch OFF
Battery voltage (Approx. 12V)
Hazard lamp switch ON
Approx. 0V
10
Vehicle speed signal
(8-pulse)
Combination meter operated
[When vehicle speed is
approx. 40 km/h (25 MPH)]
11
GND
—
Approx. 0V
12
Data link connector (RX)
—
—
13
Data link connector (TX)
—
—
17
Antenna
—
—
SEIA0188E
SEIA0189E
ELF1084D
WT-14
TROUBLE DIAGNOSES
ID Registration Procedure
AES00043
ID REGISTRATION WITH TRANSMITTER ACTIVATION TOOL
1.
Turn ignition switch “OFF”.
2.
Connect CONSULT-II to data link connector.
3.
Start engine.
4.
Touch “START”, “AIR PRESSURE MONITOR”, “WORK SUPPORT” and “ID REGIST”.
5.
With the transmitter activation tool (J-45295) pushed against the
front-left transmitter, press the button then keep 5 seconds.
6.
Register the IDs in order from FR LH, FR RH, RR RH, to RR LH. When ID registration of each wheel has
been completed, a buzzer sounds and hazard warning lamp blinks.
7.
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
display will not function properly.
SEIA0460E
Activation tire position
Buzzer
Hazard warning lamp
CONSULT-II
1
FR LH
Once
2 times flashing
“YET”
↓
“DONE”
2
FR RH
2 times
3
RR RH
3 times
4
RR LH
4 times
TROUBLE DIAGNOSES
WT-15
C
D
F
G
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A
B
WT
ID REGISTRATION WITHOUT TRANSMITTER ACTIVATION TOOL
1.
Turn ignition switch “OFF”.
2.
Connect CONSULT-II to data link connector.
3.
Touch “START”, “AIR PRESSURE MONITOR”, “WORK SUPPORT” and “ID REGIST”.
4.
Adjust the tire pressure to the values shown in the table below for ID registration, and drive the vehicle at
32 km/h (20 MPH) or more for a few minutes.
5.
After completing all ID registrations, press “END” to complete the procedure.
Transmitter Wake Up Operation
AES000DS
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 waking up of all transmitters, make sure tire pressure warning lamp go out.
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
FR LH
“YET”
↓
“DONE”
FR RH
RR RH
RR LH
SEIA0460E
SEIA0351E
WT-16
TROUBLE DIAGNOSES
Self-Diagnosis
AES00044
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 Application to Low Tire Pressure Warning System
×
: Applicable
– : Not applicable
Self-Diagnostic Results 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.
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)
—
×
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.
[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.
RECEIVER- ID- NO- REG
No ID registration has been made to the tire pressure warning control unit.
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