Infiniti EX35. Manual - part 1520

WT-36

< COMPONENT DIAGNOSIS >

TIRE PRESSURE RECEIVER

TIRE PRESSURE RECEIVER

Description

INFOID:0000000003579738

The tire pressure receiver (1) receives the air pressure signal trans-
mitted by the transmitter in each wheel.

Component Function Check

INFOID:0000000003579739

1.

TIRE PRESSURE MONITORING SYSTEM OPERATION

With CONSULT-III 

1.

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

2.

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

Is the inspection result normal?

YES

>> INSPECTION END

NO-1

>> Perform BCM self-diagnosis. Refer to 

WT-82, "DTC Index"

.

NO-2

>> Proceed to diagnosis procedure. Refer to 

WT-36, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000003579740

1.

CHECK TIRE PRESSURE RECEIVER SIGNAL

1.

Turn the ignition switch ON.

CAUTION:

Never start the engine.

2.

Check tire pressure receiver connector and ground signal with oscilloscope.

JPEIC0056ZZ

Monitored item

Condition

Display value

AIR PRESS FL

Start engine and drive at a 40 km/h (25MPH) or 
more for 10 minutes.

Approximately equal to the indication on vehicle 
information display.

AIR PRESS FR

AIR PRESS RR

AIR PRESS RL

TIRE PRESSURE RECEIVER

WT-37

< 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

>> GO TO 2.

2.

CHECK TIRE PRESSURE RECEIVER INPUT VOLTAGE

1.

Disconnect tire pressure receiver connector.

2.

Check voltage between tire pressure receiver connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Check BCM harness and connector. 

3.

CHECK TIRE PRESSURE RECEIVER GROUND CIRCUIT

1.

Disconnect BCM harness connector.

2.

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

3.

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 BCM CIRCUIT

Inspect the BCM circuit. Refer to 

BCS-41, "Diagnosis Procedure"

.

Is the BCM circuit normal?

YES

>> Replace tire pressure receiver.

Tire pressure receiver

—

Condition

Voltage (Approx.)

Connector

Terminal

M101

2

Ground

Standby state

When receiving the signal from the trans-
mitter

OCC3881D

OCC3880D

Tire pressure receiver

—

Voltage (Approx.)

Connector

Terminal

M101

4

Ground

5.0 V

BCM

Tire pressure receiver

Continuity

Connector

Terminal

Connector

Terminal

M123

137

M101

1

Existed

BCM

—

Continuity

Connector

Terminal

M123

137

Ground

Not existed

WT-38

< COMPONENT DIAGNOSIS >

TIRE PRESSURE RECEIVER

NO

>> Repair or replace BCM circuit. Replace BCM. Refer to 

BCS-84, "Removal and Installation"

.

TIRE PRESSURE WARNING CHECK SWITCH

WT-39

< COMPONENT DIAGNOSIS >

C

D

F

G

H

I

J

K

L

M

A

B

WT

N

O

P

TIRE PRESSURE WARNING CHECK SWITCH

Description

INFOID:0000000003579741

The following item can be checked by grounding the tire pressure
warning check switch harness connector terminal (1).
• The low tire pressure warning lamp in the combination meter blink

according to the self-diagnostic results.

NOTE:
If low tire pressure warning lamp blinks as shown in the figure, the system is normal.
• This mode shows transmitter status is in OFF-mode.

Perform transmitter wake up operation. Refer to 

WT-6, "TRANS-

MITTER WAKE UP OPERATION : Special Repair Requirement"

.

Component Function Check

INFOID:0000000003579742

1.

CHECK LOW TIRE PRESSURE WARNING LAMP OPERATION

Check if low tire pressure warning lamp blinks 1 second and then goes off after turning ignition switch ON.

Is inspection result normal?

YES

>> GO TO 2.

NO

>> Check low tire pressure warning lamp. Refer to 

WT-41, "Diagnosis Procedure"

.

2.

CHECK TIRE PRESSURE WARNING CHECK SWITCH OPERATION

1.

Ground the tire pressure warning check switch harness connector terminal.

2.

Check the low tire pressure warning lamp blinks.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Proceed to diagnosis procedure. Refer to 

WT-39, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000003579743

1.

CHECK TIRE PRESSURE WARNING CHECK SWITCH POWER SUPPLY CIRCUIT

1.

Turn the ignition switch ON.

CAUTION:

Never start the engine.

2.

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

Is the inspection result normal?

JPEIC0051ZZ

JPEIC0031GB

Tire pressure warning check switch

—

Voltage (Approx.)

Connector

Terminal

M23

1

Ground

11.8 V