Infiniti FX35, FX50 (S51). Manual - part 1930

 

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Infiniti FX35, FX50 (S51). Manual - part 1930

 

 

C1720, C1721, C1722, C1723 TRANSMITTER

WT-23

< DTC/CIRCUIT DIAGNOSIS >

C

D

F

G

H

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M

A

B

WT

N

O

P

NO

>> GO TO 4.

2.

CHECK HARNESS BETWEEN LOW TIRE PRESSURE WARNING CONTROL UNIT AND TIRE PRES-

SURE RECEIVER

1.

Turn the ignition switch OFF.

2.

Disconnect low tire pressure warning control unit harness connector and tire pressure receiver harness
connector.

3.

Check the continuity between low tire pressure warning control unit harness connector and tire pressure
receiver harness connector.

CHECK RECEIVER POWER CIRCUIT

CHECK RECEIVER SIGNAL CIRCUIT

CHECK RECEIVER SIGNAL (SENSITIVITY) CIRCUIT

CHECK RECEIVER GROUND CIRCUIT

4.

Check the continuity between low tire pressure warning control unit harness connector and ground.

CHECK RECEIVER POWER CIRCUIT

Low tire pressure warning control unit

Tire pressure receiver

Continuity

Connector

Terminal

Connector

Terminal

M96

10

E53 (Front LH)

1

Existed

9

E19 (Front RH)

8

B43 (Rear LH)

7

B251 (Rear RH)

Low tire pressure warning control unit

Tire pressure receiver

Continuity

Connector

Terminal

Connector

Terminal

M96

6

E53 (Front LH)

3

Existed

5

E19 (Front RH)

4

B43 (Rear LH)

3

B251 (Rear RH)

Low tire pressure warning control unit

Tire pressure receiver

Continuity

Connector

Terminal

Connector

Terminal

M96

22

E53 (Front LH)

2

Existed

21

E19 (Front RH)

20

B43 (Rear LH)

19

B251 (Rear RH)

Low tire pressure warning control unit

Tire pressure receiver

Continuity

Connector

Terminal

Connector

Terminal

M96

26

E53 (Front LH)

4

Existed

25

E19 (Front RH)

24

B43 (Rear LH)

23

B251 (Rear RH)

Low tire pressure warning control unit

Continuity

Connector

Terminal

M96

10

Ground

Not existed

9

8

7

WT-24

< DTC/CIRCUIT DIAGNOSIS >

C1720, C1721, C1722, C1723 TRANSMITTER

CHECK RECEIVER SIGNAL CIRCUIT

CHECK RECEIVER SIGNAL (SENSITIVITY) CIRCUIT

CHECK RECEIVER GROUND CIRCUIT

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace error-detected parts.

3.

CHECK TIRE PRESSURE RECEIVER

Check the tire pressure receivers. Refer to 

WT-26, "Diagnosis Procedure"

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Replace the tire pressure receiver.

4.

CHECK TIRE PRESSURE MONITORING CONTROL SYSTEM

Check the Tire Pressure Monitoring System (TPMS). Refer to 

WT-32, "Diagnosis Procedure"

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Replace the low tire pressure warning control unit. 

5.

CHECK TRANSMITTERS

1.

Drive for several minutes at a speed of 40 km/h (25 MPH) or more, then stop the vehicle.

2.

Within 15 minutes, select “DATA MONITOR” of “AIR PRESSURE MONITOR” and display the tire pres-
sure for all wheels.

3.

Check that the tire pressures is the specified value.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace the transmitter.

Low tire pressure warning control unit

Continuity

Connector

Terminal

M96

6

Ground

Not existed

5

4

3

Low tire pressure warning control unit

Continuity

Connector

Terminal

M96

22

Ground

Not existed

21

20

19

Low tire pressure warning control unit

Continuity

Connector

Terminal

M96

26

Ground

Not existed

25

24

23

Display Item

Condition

Displayed value

AIR PRESS FL

Drive for several minutes at a speed of 40 km/h (25 MPH) or more, 
then stop the vehicle.

Air pressure of tire pressure

AIR PRESS FR

AIR PRESS RR

AIR PRESS RL

C1720, C1721, C1722, C1723 TRANSMITTER

WT-25

< DTC/CIRCUIT DIAGNOSIS >

C

D

F

G

H

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A

B

WT

N

O

P

Special Repair Requirement

INFOID:0000000005549616

1.

CHECK TIRE PRESSURE

Check the tire pressure of all wheels. Refer to 

WT-80, "Tire Air Pressure"

Does the tire pressure match the specified value?

YES

>> GO TO 2.

NO

>> Check the road wheels and tires. Adjust the tire pressures to the specified values.

2.

REGISTER TRANSMITTER ID

Perform transmitter ID registration. Refer to 

WT-7, "ID REGISTRATION PROCEDURE : Transmitter ID Regis-

tration Procedure"

>> END

WT-26

< DTC/CIRCUIT DIAGNOSIS >

C1728 RECEIVER ID

C1728 RECEIVER ID

Description

INFOID:0000000005549617

The front (A) tire pressure receiver (1) and rear (B) tire pressure
receiver (2) receive the tire pressure signal by radio waves from the
transmitter at each wheel, and transmit the tire pressure signal to the
low tire pressure warning control unit.

DTC Logic

INFOID:0000000005549618

DTC DETECTION LOGIC

DTC REPRODUCTION PROCEDURE

1.

DTC REPRODUCTION PROCEDURE 

With CONSULT-III

1.

Drive for 3 minutes at a speed of 40 km/h (25 MPH) or more, then drive normally for 10 minutes.

2.

Perform “AIR PRESSURE MONITOR” self-diagnosis.

Is DTC “C1728” detected?

YES

>> Perform trouble diagnosis. Refer to 

WT-26, "Diagnosis Procedure"

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000005549619

1.

CHECK RECEIVER INPUT SIGNAL

1.

Turn the ignition switch ON.

CAUTION:

Never start engine. 

2.

Use an oscilloscope and check the input signal waveform between the low tire pressure warning control
unit harness connector terminals and the ground. Refer to 

WT-45, "Reference Value"

JSEIA0007ZZ

DTC

Display Item

Malfunction detected condition

Possible causes

C1728

RECEIVER ID NO REG

Receiver ID registration cannot be performed.

• Tire pressure receiver malfunc-

tion

• Low tire pressure warning con-

trol unit malfunction

 

 

 

 

 

 

 

Content   ..  1928  1929  1930  1931   ..