Infiniti FX35, FX50 (S51). Manual - part 1933

 

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Infiniti FX35, FX50 (S51). Manual - part 1933

 

 

C1755, C1756, C1757, C1758 POOR RECEIVING CONDITIONS

WT-35

< DTC/CIRCUIT DIAGNOSIS >

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C1755, C1756, C1757, C1758 POOR RECEIVING CONDITIONS

Description

INFOID:0000000005549630

A DTC is detected if the radio signal output from the transmitter is interrupted by external electromagnetic
interference for 10 minutes or more. 

DTC Logic

INFOID:0000000005549631

DTC logic

CAUTION:

If DTC C1755, C1756, C1757, or C1758 (low communication performance) is detected along with,
C1708, C1709, C1710, or C1711 (no transmitter data) first diagnose C1755, C1756, C1757, or C1758 (low
communications performance).

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 “C1755”, “C1756”, “C1757”, or “C1758 ” detected?

YES

>> Perform trouble diagnosis. Refer to 

WT-35, "Diagnosis Procedure"

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000005549632

1.

REGISTER THE TRANSMITTER ID

Perform transmitter ID registration for all wheels. Refer to 

WT-7, "ID REGISTRATION PROCEDURE : Trans-

mitter ID Registration Procedure"

Is ID registration for all wheels completed?

YES

>> GO TO 2.

NO

>> Change the work location and perform ID registration again, then perform trouble diagnosis. Refer

to 

WT-66, "Diagnosis Procedure"

2.

CHECK TIRE PRESSURE SIGNAL

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.

Within 5 minutes, select “DATA MONITOR” of “AIR PRESSURE MONITOR”.

3.

Display the following: “AIR PRESS FL”, “AIR PRESS FR”, “AIR PRESS RR”, and “AIR PRESS RL”.

4.

Check that the displayed tire pressures is the specified value.

DTC

Display Item

Malfunction detected condition

Possible causes

C1755

PR RECEIV COND FL

The data signal from the front LH wheel transmitter cannot be 
detected due to external electromagnetic interference. (DTC 
C1708 is displayed at the same time.)

External electromagnet-
ic interference

C1756

PR RECEIV COND FR

The data signal from the front RH wheel transmitter cannot be 
detected due to external electromagnetic interference. (DTC 
C1709 is displayed at the same time.)

C1757

PR RECEIV COND RR

The data signal from the rear RH wheel transmitter cannot be 
detected due to external electromagnetic interference. (DTC 
C1710 is displayed at the same time.)

C1758

PR RECEIV COND RL

The data signal from the rear LH wheel transmitter cannot be 
detected due to external electromagnetic interference. (DTC 
C1711 is displayed at the same time.)

WT-36

< DTC/CIRCUIT DIAGNOSIS >

C1755, C1756, C1757, C1758 POOR RECEIVING CONDITIONS

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Change the work location, then GO TO 1.

3.

CHECK THE DIAGNOSIS RESULTS

With CONSULT-III

1.

Erase the self-diagnosis memory of the low tire pressure warning control unit.

2.

Turn ignition switch OFF, and wait for 10 seconds or more.

3.

Perform “AIR PRESSURE MONITOR” self-diagnosis.

Are DTC “C1755”, “C1756”, “C1757”, or “C1758” and “C1708”, “C1709”, “C1710”, or “C1711” detected?

YES

>> Change the work location, then GO TO 1.

NO

>> GO TO 4.

4.

CHECK TIRE PRESSURE SIGNAL

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.

Within 5 minutes, select “DATA MONITOR” of “AIR PRESSURE MONITOR”.

3.

Display the following: “AIR PRESS FL”, “AIR PRESS FR”, “AIR PRESS RR”, and “AIR PRESS RL”.

4.

Check that the tire pressures is the specified value.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Change the work location, then GO TO 1.

Monitor item

Condition

Displayed value

AIR PRESS FL

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

Air pressure of tire pressure

AIR PRESS FR

AIR PRESS RR

AIR PRESS RL

Monitor item

Condition

Displayed value

AIR PRESS FL

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

Air pressure of tire pressure

AIR PRESS FR

AIR PRESS RR

AIR PRESS RL

U1000 CAN COMM CIRCUIT

WT-37

< DTC/CIRCUIT DIAGNOSIS >

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U1000 CAN COMM CIRCUIT

Description

INFOID:0000000005549633

CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN-H line, CAN-L line) allowing a high rate of information transmission with less wiring.
Each control unit communicates data but selectively reads required data only.

DTC Logic

INFOID:0000000005549634

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

DTC REPRODUCTION PROCEDURE

With CONSULT-III

1.

Turn the ignition switch OFF to ON.

2.

Perform “AIR PRESSURE MONITOR” self-diagnosis.

Is DTC “U1000” detected?

YES

>> Proceed to trouble diagnosis procedure. Refer to 

WT-37, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000005549635

1.

PERFORM SELF-DIAGNOSIS

With CONSULT-III

Perform “AIR PRESSURE MONITOR” self-diagnosis.

Is DTC “U1000” detected?

YES

>> CAN specification chart. Refer to 

LAN-29, "CAN System Specification Chart"

.

NO

>> INSPECTION END

DTC

Display item

Malfunction detected condition

Possible cause

U1000

CAN COMM CIRCUIT

Low tire pressure warning control unit is 
not communicating CAN communication 
signal for 2 seconds or more.

• CAN communication malfunction
• Malfunction of low tire pressure warn-

ing control unit

WT-38

< DTC/CIRCUIT DIAGNOSIS >

U1010 CONTROL UNIT (CAN)

U1010 CONTROL UNIT (CAN)

Description

INFOID:0000000005549636

CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN-H line, CAN-L line) allowing a high rate of information transmission with less wiring.
Each control unit communicates data but selectively reads required data only.

DTC Logic

INFOID:0000000005549637

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

DTC REPRODUCTION PROCEDURE

With CONSULT-III

1.

Turn the ignition switch OFF to ON.

2.

Perform “AIR PRESSURE MONITOR” self-diagnosis.

Is DTC “U1010” detected?

YES 

>> Proceed to trouble diagnosis procedure. Refer to 

WT-38, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000005549638

1.

CHECK LOW TIRE PRESSURE WARNING CONTROL UNIT

Check low tire pressure warning control unit harness connector for disconnection or deformation.

Is the inspection result normal? 

YES

>> Replace low tire pressure warning control unit. Refer to 

WT-76, "Exploded View"

.

NO

>> Repair or replace error-detected parts.

DTC

Display item

Malfunction detected condition

Possible cause

U1010

CONTROL UNIT (CAN)

Detecting error during the initial diagno-
sis of CAN controller of low tire pressure 
warning control unit.

Malfunction of low tire pressure warning 
control unit

 

 

 

 

 

 

 

Content   ..  1931  1932  1933  1934   ..