Infiniti Q45. Manual — part 902
TROUBLE DIAGNOSIS
WT-17
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Low Tire Pressure Warning Control Unit Input/Output Signal Reference Values
NES000D4
LOW TIRE PRESSURE WARNING CONTROL UNIT INSPECTION TABLE
Specifications with CONSULT-II
Monitor item [Unit]
Content
Condition
Display value
VHCL SPEED SE [km/h] or
[mph]
Wheel speed
Vehicle stopped
0 km/h (0 MPH)
Vehicle running
CAUTION:
Check air pressure of tire under standard condition.
Approximately
equal to the indi-
cation on speed-
ometer (Inside of
±
10%)
AIR PRESS FL [kPa], [kg/
cm
2
] or [psi]
Condition of front LH
tire air pressure
Just after the engine is started
0 kPa (0 kg/cm
2
,
0 psi)
Start engine and drive at 40 km/h (25 MPH) or more for
several minutes.
Approximately
equal to the indi-
cation on tire
gauge value
AIR PRESS FR [kPa], [kg/
cm
2
] or [psi]
Condition of front RH
tire air pressure
Just after the engine is started
0 kPa (0 kg/cm
2
,
0 psi)
Start engine and drive at 40 km/h (25 MPH) or more for
several minutes.
Approximately
equal to the indi-
cation on tire
gauge value
AIR PRESS RR [kPa], [kg/
cm
2
] or [psi]
Condition of rear RH
tire air pressure
Just after the engine is started
0 kPa (0 kg/cm
2
,
0 psi)
Start engine and drive at 40 km/h (25 MPH) or more for
several minutes.
Approximately
equal to the indi-
cation on tire
gauge value
AIR PRESS RL [kPa], [kg/
cm
2
] or [psi]
Condition of rear LH tire
air pressure
Just after the engine is started
0 kPa (0 kg/cm
2
,
0 psi)
Start engine and drive at 40 km/h (25 MPH) or more for
several minutes.
Approximately
equal to the indi-
cation on tire
gauge value
ID REGST FL [DONE/YET]
Condition of front LH ID
registration
Transmitter ID registered
DONE
Transmitter ID unregistered
YET
ID REGST FR [DONE /YET]
Condition of front RH ID
registration
Transmitter ID registered
DONE
Transmitter ID unregistered
YET
ID REGST RR [DONE/YET]
Condition of rear RH ID
registration
Transmitter ID registered
DONE
Transmitter ID unregistered
YET
ID REGST RL [DONE/YET]
Condition of rear LH ID
registration
Transmitter ID registered
DONE
Transmitter ID unregistered
YET
WARNING LAMP [ON/OFF]
Low tire pressure warn-
ing lamp condition
Low tire pressure warning lamp: ON
ON
Low tire pressure warning lamp: OFF
OFF
BUZZER [ON/OFF]
Condition of sound
Sound heard
ON
Sound not heard
OFF
WT-18
TROUBLE DIAGNOSIS
Specifications Between Low Tire Pressure Warning Control Unit Terminals
LOW TIRE PRESSURE WARNING CONTROL UNIT CONNECTOR LAYOUT
Data are reference value and are measured between each terminal and ground.
CAUTION:
When using circuit tester or oscilloscope to measure voltage for inspection, be sure not to extend forcibly any connector ter-
minals.
SEIA0743E
Terminal
Wire
color
Item
Condition
Data (Approx.)
1
Y/G
Power supply
(Memory back-up)
Ignition switch: ON
Battery voltage
Ignition switch: OFF
Battery voltage
2
BR/W
Power supply
Ignition switch: ON
Battery voltage
Ignition switch: OFF
0 V
3
LG
Low tire pressure warning lamp
Low tire pressure warning lamp: ON
5 - 8 V
Low tire pressure warning lamp: OFF
0 V
4
L/OR
Power supply (ACC)
Ignition switch: ACC
Battery voltage
Ignition switch: OFF
0 V
5
OR
Display data line (+)
Ignition switch: ON
0 - 5 V (alternately repeated)
6
W
Display data line (-)
Ignition switch: ON
0 - 5 V (alternately repeated)
7
—
Display ground
—
—
8
G
Tire pressure warning check switch
Ignition switch: ON
5 V
Ignition switch: OFF
5 V
9
W/L
Hazard warning lamp switch
Ignition switch: ON
Battery voltage
Ignition switch: OFF
Battery voltage
10
OR/L
Vehicle speed
Vehicle speed: 40 km/h (25 MPH)
11
B
Ground
Always
0 V
12
BR/Y
Data link connector (RX)
—
—
13
G/B
Data link connector (TX)
—
—
17
—
Antenna
—
—
ELF1080D
TROUBLE DIAGNOSIS
WT-19
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WT
CONSULT-II Function (AIR PRESSURE MONITOR)
NES000D5
FUNCTION
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
CONSULT-II SETTING PROCEDURE
Refer to
GI-36, "CONSULT-II Start Procedure"
.
WORK SUPPORT MODE
Operation Procedure
1.
Perform “CONSULT-II Start Procedure”. Refer to
GI-36, "CONSULT-II Start Procedure"
.
2.
Touch “WORK SUPPORT”.
3.
Select from “SELECT WORK ITEM”, screen of work support
mode is displayed.
ID Regist
Refer to
WT-24, "ID Registration Procedure"
SELF-DIAG RESULT MODE
Operation Procedure
1.
Perform “CONSULT-II Start Procedure”. Refer to
GI-36, "CONSULT-II Start Procedure"
.
2.
With engine at idle, touch “SELF-DIAG RESULTS”.
Display shows malfunction experienced since the last erasing operation.
NOTE:
The details for “TIME” are as follows:
●
“0”: Error currently detected with low tire pressure warning control unit.
●
Except for “0”: Error detected in the past and memorized with low tire pressure warning control unit.
Detects frequency of driving after DTC occurs (frequency of turning ignition switch “ON/OFF”).
Diagnostic test mode
Function
Reference
page
Work support
●
This mode enables a technician to adjust some devices faster and more accu-
rately 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 low tire pressure warning control unit can be read.
ECU part number
●
Low tire pressure warning control unit part number can be read.
SEIA0772E
WT-20
TROUBLE DIAGNOSIS
Display Item List
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.
How to Erase Self-diagnostic Results
1.
Perform applicable inspection of malfunctioning item and then repair or replace.
2.
Turn ignition switch “ON” and select “SELF-DIAG RESULTS” mode for “AIR PRESSURE MONITOR” with
CONSULT-II.
3.
Touch “ERASE” on CONSULT-II screen to erase DTC memory.
CAUTION:
If memory cannot be erased, perform applicable diagnosis.
Items
(CONSULT-II screen terms)
Diagnostic item is detected when...
Check item
FLAT TIRE FL
Front LH tire pressure drops to 186 kPa (1.86 kg/cm
2
, 27 psi) or less
FLAT TIRE FR
Front RH tire pressure drops to 186 kPa (1.86 kg/cm
2
, 27 psi) or less
FLAT TIRE RR
Rear RH tire pressure drops to 186 kPa (1.86 kg/cm
2
, 27 psi) or less
FLAT TIRE RL
Rear LH tire pressure drops to 186 kPa (1.86 kg/cm
2
, 27 psi) or less
[NO DATA] FL
Data from front LH transmitter cannot be received.
[NO DATA] FR
Data from front RH transmitter cannot be received.
[NO DATA] RR
Data from rear RH transmitter cannot be received.
[NO DATA] RL
Data from rear LH transmitter cannot be received.
[CHECKSUM ERR] FL
Checksum data from front LH transmitter is malfunctioning.
[CHECKSUM ERR] FR
Checksum data from front RH transmitter is malfunctioning.
[CHECKSUM ERR] RR
Checksum data from rear RH transmitter is malfunctioning.
[CHECKSUM ERR] RL
Checksum data from rear LH transmitter is malfunctioning.
[PRESSDATA ERR] FL
Air pressure data from front LH transmitter is malfunction.
[PRESSDATA ERR] FR
Air pressure data from front RH transmitter is malfunction.
[PRESSDATA ERR] RR
Air pressure data from rear RH transmitter is malfunction.
[PRESSDATA ERR] RL
Air pressure data from rear LH transmitter is malfunction.
[CODE ERR] FL
Function code data from front LH transmitter is malfunctioning.
[CODE ERR] FR
Function code data from front RH transmitter is malfunctioning.
[CODE ERR] RR
Function code data from rear RH transmitter is malfunctioning.
[CODE ERR] RL
Function code data from rear LH transmitter is malfunctioning.
[BATT VOLT LOW] FL
Battery voltage of front LH transmitter drops.
[BATT VOLT LOW] FR
Battery voltage of front RH transmitter drops.
[BATT VOLT LOW] RR
Battery voltage of rear RH transmitter drops.
[BATT VOLT LOW] RL
Battery voltage of rear LH transmitter drops.
RECEIVER ID NO REG
No ID registration has been made to the low tire pressure warning control unit.
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