Infiniti EX35. Manual - part 1518

WT-28

< COMPONENT DIAGNOSIS >

C1720, C1721, C1722, C1723 TRANSMITTER

YES

>> GO TO 6.

NO

>> Replace BCM. Refer to 

BCS-84, "Removal and Installation"

.

6.

CHECK TRANSMITTER

With CONSULT-III

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-III “DATA MONITOR” within 5 minutes after stopped vehicle.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace malfunction transmitter.

Special Repair Requirement

INFOID:0000000003579725

1.

CHECK TIRE AIR PRESSURE

Check all tire air pressures. Refer to 

WT-104, "Tire Air Pressure"

.

Does all tire pressure data meet the specification?

YES

>> GO TO 2.

NO

>> Inspect or repair the tires or wheels and adjust the tire pressure to the specification.

2.

PERFORM ID REGISTRATION

Perform ID registration. Refer to 

WT-6, "ID REGISTRATION PROCEDURE : Special Repair Requirement"

.

>> END

Monitored item

Condition

Display value

AIR PRESS FL

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

Approximately equal to the indication on vehicle 
information display.

AIR PRESS FR

AIR PRESS RR

AIR PRESS RL

C1724, C1725, C1726, C1727 TRANSMITTER

WT-29

< COMPONENT DIAGNOSIS >

C

D

F

G

H

I

J

K

L

M

A

B

WT

N

O

P

C1724, C1725, C1726, C1727 TRANSMITTER

Description

INFOID:0000000003664599

The transmitter (1) integrated with a valve is installed on a wheel (2),
and transmits a detected air pressure signal by radio wave. 

DTC Logic

INFOID:0000000003579727

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

DTC REPRODUCTION PROCEDURE

With CONSULT-III

1.

Driving at a speed of 40 km/h (25 MPH) or more for 10minutes. 

2.

Perform BCM self-diagnosis.

Is DTC “C1724”, “C1725”, “C1726”, “C1727” detected?

YES

>> Proceed to diagnosis procedure. Refer to 

WT-29, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000003579728

1.

CHECK ID REGISTRATION

With CONSULT-III

1.

Perform the ID registration of all transmitters. Refer to

WT-6, "ID REGISTRATION PROCEDURE : Special

Repair Requirement"

.

2.

Drive at a 40 km/h (25 MPH) or more for 10 minutes.

3.

Check all tire pressure with CONSULT-III “DATA MONITOR” within 5 minutes.

Can ID registration of all transmitters be completed?

YES

>> GO TO 2.

NO

>> GO TO 4.

2.

CHECK AIR PRESSURE SIGNAL

With CONSULT-III

1.

Start the engine.

2.

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

3.

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

: Outside

JPEIC0013ZZ

DTC

Display item

Malfunction detected condition

Possible case

C1724

[BATT VOLT LOW] FL

Battery voltage of front LH transmitter drops.

• Transmitter malfunction
• Tire pressure receiver mal-

function

• BCM malfunction
• Harness or connector

C1725

[BATT VOLT LOW] FR

Battery voltage of front RH transmitter drops.

C1726

[BATT VOLT LOW] RR

Battery voltage of rear RH transmitter drops.

C1727

[BATT VOLT LOW] RL

Battery voltage of rear LH transmitter drops.

WT-30

< COMPONENT DIAGNOSIS >

C1724, C1725, C1726, C1727 TRANSMITTER

Are all tire pressures displayed 0 kPa?

YES

>> GO TO 3.

NO

>> GO TO 5.

3.

CHECK HARNESS BETWEEN BCM AND TIRE PRESSURE RECEIVER

1.

Turn the ignition switch OFF.

2.

Disconnect BCM harness connector and tire pressure receiver harness connector.

3.

Check continuity between BCM harness connector and tire pressure receiver harness connector.

4.

Check continuity between BCM harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace damaged parts.

4.

CHECK TIRE PRESSURE RECEIVER

Check tire pressure receiver. Refer to 

WT-36, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> Check BCM pin terminals for damage or loose connection with harness connector. If any items

are damaged, repair or replace damaged parts.

NO

>> Replace the tire pressure receiver.

5.

CHECK ID REGISTRATION

Perform ID registration of all transmitters. Refer to 

WT-6, "ID REGISTRATION PROCEDURE : Special Repair

Requirement"

.

Can ID registration of all transmitters be completed?

YES

>> GO TO 6.

NO

>> Replace malfunctioning transmitter.

6.

CHECK TIRE PRESSURE MONITORING SYSTEM

With CONSULT-III

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-III “DATA MONITOR” within 15 minutes after stopped vehicle.

Monitored item

Condition

Display value

AIR PRESS FL

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

Approximately equal to the indication on vehicle 
information display.

AIR PRESS FR

AIR PRESS RR

AIR PRESS RL

BCM

Tire pressure receiver

Continuity

Connector

Terminal

Connector

Terminal

M123

137

M101

1

Existed

138

4

139

2

BCM

—

Continuity

Connector

Terminal

M123

137

Ground

Not existed

138

139

C1724, C1725, C1726, C1727 TRANSMITTER

WT-31

< COMPONENT DIAGNOSIS >

C

D

F

G

H

I

J

K

L

M

A

B

WT

N

O

P

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace BCM. Refer to 

BCS-84, "Removal and Installation"

.

Special Repair Requirement

INFOID:0000000003579729

1.

CHECK TIRE AIR PRESSURE

Check all tire air pressures. Refer to 

WT-104, "Tire Air Pressure"

.

Does all tire pressure data meet the specification?

YES

>> GO TO 2.

NO

>> Inspect or repair the tires or wheels and adjust the tire pressure to the specification.

2.

PERFORM ID REGISTRATION

Perform ID registration. Refer to 

WT-6, "ID REGISTRATION PROCEDURE : Special Repair Requirement"

.

>> END

Monitored item

Condition

Display value

AIR PRESS FL

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

Approximately equal to the indication on vehicle 
information display.

AIR PRESS FR

AIR PRESS RR

AIR PRESS RL