Infiniti FX35, FX50 (S51). Manual - part 1940

LOW TIRE PRESSURE WARNING LAMP BLINKS

WT-63

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LOW TIRE PRESSURE WARNING LAMP BLINKS

Description

INFOID:0000000005549653

• The low tire pressure warning lamp blinks when the ignition switch is turned ON.
• Blinking mode

When the low tire pressure warning lamp blinks as shown in the
figure, the transmitter is not waked up. Perform the transmitter
wake-up operation. Refer to 

WT-6, "TRANSMITTER WAKE UP

OPERATION : Transmitter Wake-up Procedure"

. 

Diagnosis Procedure

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1.

CHECK POWER OF TIRE PRESSURE WARNING CHECK SWITCH CONNECTOR

1.

Turn the ignition switch ON.

2.

Check the voltage between the tire pressure warning check switch and the ground.

Is the output voltage normal?

YES

>> Repair or replace the low tire pressure warning control unit. Or, replace the low tire pressure warn-

ing control unit.

NO

>> GO TO 2.

2.

CHECK TIRE PRESSURE WARNING CHECK SWITCH CONNECTOR CIRCUIT

1.

Turn the ignition switch OFF.

2.

Disconnect the low tire pressure warning control unit harness connector.

3.

Check the continuity between the terminals of the low tire pressure warning control unit harness connec-
tor and the tire pressure warning check switch the connector.

4.

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

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace error-detected parts.

3.

CHECK LOW TIRE PRESSURE WARNING CONTROL UNIT

Check the input/output signals of the low tire pressure warning control unit. Refer to 

WT-45, "Reference

Value"

. 

Is the inspection result normal?

JSEIA0033GB

Tire pressure warning check switch

—

Voltage

Connector

Terminal

M23

1

Ground

7.6 - 14.6 V

Low tire pressure warning control unit

Tire pressure warning check switch

Continuity

Connector

Terminal

Connector

Terminal

Existed

M96

12

M23

1

Low tire pressure warning control unit

—

Continuity

Connector

Terminal

M96

12

Ground

Not existed

WT-64

< SYMPTOM DIAGNOSIS >

LOW TIRE PRESSURE WARNING LAMP BLINKS

YES

>> Replace the low tire pressure warning control unit. 

NO

>> GO TO 4.

4.

CHECK LOW TIRE PRESSURE WARNING CONTROL UNIT HARNESS CONNECTOR

Check for looseness or damage at the harness connector pins of the low tire pressure warning control unit.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Repair or replace error-detected parts.

TURN SIGNAL LAMP BLINKS

WT-65

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TURN SIGNAL LAMP BLINKS

Description

INFOID:0000000005549655

DESCRIPTION

The turn signal lamp blinks when the ignition switch is turned ON.

Diagnosis Procedure

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1.

CHECK LOW TIRE PRESSURE WARNING CONTROL UNIT

1.

Check low tire pressure warning control unit input/output signal. Refer to 

WT-45, "Reference Value"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 2.

2.

CHECK LOW TIRE PRESSURE WARNING CONTROL UNIT CIRCUIT

With CONSULT-III

Perform “AIR PRESSURE MONITOR” self-diagnosis. Refer to 

WT-32, "Diagnosis Procedure"

. 

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace error-detected parts.

3.

CHECK TIRE PRESSURE WARNING CONTROL UNIT AND BCM CIRCUIT

1.

Turn the ignition switch OFF.

2.

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

3.

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

Is the inspection result normal?

YES

>> Check the BCM. Refer to 

BCS-4, "CONFIGURATION (BCM) : Work Procedure"

. 

NO

>> Repair or replace error-detected parts.

Low tire pressure warning control unit

BCM

Continuity

Connector

Terminal

Connector

Terminal

M96

30

M122

110

Existed

WT-66

< SYMPTOM DIAGNOSIS >

ID REGISTRATION CANNOT BE COMPLETED

ID REGISTRATION CANNOT BE COMPLETED

Description

INFOID:0000000005549657

DESCRIPTION

The ID of the transmitter installed in each wheel cannot be registered in the tire pressure monitoring system.
Inspect the transmitter or the tire pressure monitoring system circuit.

Diagnosis Procedure

INFOID:0000000005549658

1.

CHECK ID REGISTRATION

1.

Perform ID registration of all transmitters. Refer to 

WT-7, "ID REGISTRATION PROCEDURE : Transmit-

ter 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. 

3.

Within 5 minutes, select “DATA MONITOR”of “AIR PRESSURE MONITOR” and display the tire pressure
for all wheels.

4.

Check that the displayed tire pressure is the specified value.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 2.

2.

CHECK TRANSMITTER

1.

Perform trouble diagnosis for transmitters. Refer to 

WT-16, "Diagnosis Procedure"

.

2.

Perform ID registration of all transmitters. Refer to 

WT-7, "ID REGISTRATION PROCEDURE : Transmit-

ter ID Registration Procedure"

.

Can ID registration of all transmitters be completed?

YES

>> INSPECTION END

NO

>> Replace the transmitter. Refer to 

WT-77, "Exploded View"

.

Monitored item

Condition

Display value

AIR PRESS FL

Start the engine and drive at a speed of 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