Infiniti Q45. Manual — part 906

TROUBLE DIAGNOSIS FOR SYSTEM

WT-33

C

D

F

G

H

I

J

K

L

M

A

B

WT

Transmitter (CHECKSUM ERR, CODE ERR, BATT VOLT LOW)

NES000DG

●

Check the following if “[CHECKSUM ERR] FL”, “[CHECKSUM ERR] FR”, “[CHECKSUM ERR] RR”,
“[CHECKSUM ERR] RL”, “[CODE ERR] FL”, “[CODE ERR] FR”, “[CODE ERR] RR”, “[CODE ERR] RL”,
“[BATT VOLT LOW] FL”, “[BATT VOLT LOW] FR”, “[BATT VOLT LOW] RR” or “[BATT VOLT LOW] RL” is
detected in self-diagnosis results with CONSULT-II or “flickering pattern for 31, 32, 33, 34, 41, 42, 43, 44,
45, 46, 47 or 48” is detected in self-diagnosis results without CONSULT-II.

CONSULT-II REFERENCE VALUE IN DATA MONITOR MODE

Data are reference value.

DIAGNOSTIC PROCEDURE

1.

CHECK ID REGISTRATION

1.

Perform the ID registration of all transmitters. Refer to

WT-24, "ID Registration Procedure"

.

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.

3.

Perform the self-diagnosis, Replace malfunctioning transmitter.

4.

Perform the ID registration of all transmitters. Refer to

WT-24, "ID Registration Procedure"

.

Can ID registration of all transmitters be completed.

YES

>> GO TO 5.

NO

>> GO TO 2.

Monitored item

Content

Condition

Display value

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 indication 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 indication on tire
gauge value

AIR PRESS RR [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 indication on tire
gauge value

AIR PRESS RL [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 indication on tire
gauge value

WT-34

TROUBLE DIAGNOSIS FOR SYSTEM

2.

CHECK AIR PRESSURE SIGNAL

With CONSULT-II

1.

Start engine.

2.

Select “DATA MONITOR” mode for “AIR PRESSURE MONITOR” with CONSULT-II.

3.

Read out the value of “AIR PRESS FL”, “AIR PRESS FR”, “AIR
PRSEE RR” and “AIR PRESS RL”.

Are all tire pressures displayed 0 kPa?

YES >> GO

TO

3.

NO

>> GO TO 5.

3.

CHECK ANTENNA CONNECTOR

Check antenna and feeder connector B183 for damage or loose connections.

OK or NG

OK

>> Check low tire pressure warning control unit pin terminals for damage or loose connection with

harness connector. If any items are damaged, repair or replace damaged parts.

NG

>> Repair or replace antenna or feeder connector.

4.

CHECK ID REGISTRATION

Perform the ID registration of all transmitters. Refer to

WT-24, "ID Registration Procedure"

.

Can ID registration of all transmitters be completed?

YES

>> GO TO 5.

NO

>> Replace malfunctioning transmitter then GO TO 6.

5.

CHECK LOW TIRE PRESSURE WARNING SYSTEM

1.

Drive at a speed of 40 km/h (25 MPH) or more for several minutes without stopping.

2.

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” displayed the standardized value without turning low tire pressure warning
lamp ON?

YES

>> INSPECTION END

NO

>> Replace low tire pressure warning control unit.

6.

CHECK ID REGISTRATION

1.

Perform the ID registration of all transmitters. Refer to

WT-24, "ID Registration Procedure"

.

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” displayed the standardized value without turning low tire pressure warning
lamp ON?

YES

>> INSPECTION END

NO

>> GO TO 2.

Monitored item

Condition

Display value

AIR PRESS FL

Start engine and drive at 40 km/h (25 MPH)
or more for several minutes.

0 kPa

AIR PRESS FR

AIR PRESS RR

AIR PRESS RL

SEIA0749E

TROUBLE DIAGNOSIS FOR SYSTEM

WT-35

C

D

F

G

H

I

J

K

L

M

A

B

WT

Transmitter (PRESSDATA ERR)

NES0007F

●

Check the following if “[PRESSDATA ERR] FL”, “[PRESSDATA ERR] FR”, “[PRESSDATA ERR] RR” or
“[PRESSDATA ERR] RL” is detected in self-diagnosis results with CONSULT-II or “flickering pattern for
35, 36, 37 or 38” is detected in self-diagnosis results without CONSULT-II.

CONSULT-II REFERENCE VALUE IN DATA MONITOR MODE

Data are reference value.

DIAGNOSTIC PROCEDURE

1.

CHECK TIRE PRESSURE

1.

Adjust tire pressure to specified value. Refer to

WT-56, "Tire"

.

2.

Perform the ID registration of all transmitters. Refer to

WT-24, "ID Registration Procedure"

.

3.

Drive at a speed of 40 km/h (25 MPH) or more for several minutes without stopping.

4.

Check all tire pressures with CONSULT-II “DATA MONITOR ITEM” within 15 minutes after vehicle speed
become 17 km/h (11 MPH).

What is display CONSULT-II “DATA MONITOR ITEM”?

438.60 kPa (4.47 kg/cm

2

, 63.60 psi)>>Replace malfunctioning transmitter.

Other than 438.60 kPa (4.47 kg/cm

2

, 63.60 psi)>>INSPECTION END

2.

CHECK LOW TIRE PRESSURE WARNING SYSTEM

1.

Perform the ID registration of all transmitters. Refer to

WT-24, "ID Registration Procedure"

.

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” displayed the standardized value without turning low tire pressure warning
lamp ON?

YES

>> INSPECTION END

NO

>> Perform the self-diagnosis, inspect detected malfunction.

Monitored item

Content

Condition

Display value

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 indication 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 indication on tire
gauge value

AIR PRESS RR [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 indication on tire
gauge value

AIR PRESS RL [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 indication on tire
gauge value

WT-36

TROUBLE DIAGNOSIS FOR SYSTEM

Vehicle Speed Signal

NES0007G

CONSULT-II REFERENCE VALUE IN DATA MONITOR MODE

Data are reference value.

LOW TIRE PRESSURE WARNING CONTROL UNIT TERMINALS AND REFERENCE VALUE

Data are reference value and are measured between each terminal and ground.

CAUTION:

When using a oscilloscope to measure voltage for inspection, be sure not to extend forcibly any connector terminal.

Monitored item

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 indication on
speedometer (Inside
of

±

10%)

Terminal

Wire

color

Item

Condition

Data (Approx.)

10

OR/L

Vehicle speed

Vehicle speed: 40 km/h (25 MPH)

ELF1080D