Nissan Leaf. Manual - part 1282

COMPONENT PARTS

WT-7

< SYSTEM DESCRIPTION >

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SYSTEM DESCRIPTION

COMPONENT PARTS

Component Parts Location

INFOID:0000000010120173

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A. View with instrument panel removed B. View with tire removed

No.

Component parts

Function

1.

BCM

• Refer to 

WT-8, "BCM"

.

• Refer  to 

BCS-5, "BODY CONTROL SYSTEM : Component Parts 

Location"

 for detailed installation location.

2.

Low tire pressure warning lamp
(In combination meter)

Refer to 

WT-10, "System Description"

.

Information display
(In combination meter)

Refer to 

WT-8, "Information Display"

.

3.

Remote keyless entry receiver

Refer to 

WT-8, "Remote Keyless Entry Receiver"

.

4.

Tire pressure sensor

Refer to 

WT-8, "Tire Pressure Sensor"

.

WT-8

< SYSTEM DESCRIPTION >

COMPONENT PARTS

BCM

INFOID:0000000010120174

• The BCM (1) reads the air pressure signal received by the remote

keyless entry receiver, controls the low tire pressure warning lamp,

hazard warning lamp, and horn operation. It also has a judgment

function to detect a system malfunction.

• Controls Easy Fill tire alert function. Refer to 

WT-11, "Easy Fill Tire

Alert Function"

.

Tire Pressure Sensor

INFOID:0000000010120175

The tire pressure sensor (1) integrated with a valve is installed on a

wheel (2), and transmits a detected air pressure signal by radio

wave. 

Remote Keyless Entry Receiver

INFOID:0000000010120176

• The remote keyless entry receiver receives the air pressure signal

transmitted by the tire pressure sensor in each wheel.

Information Display

INFOID:0000000010120177

The vehicle information display (1) is shown when a low tire pres-

sure warning lamp signal is transmitted from BCM to combination

meter via CAN communication.

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COMPONENT PARTS

WT-9

< SYSTEM DESCRIPTION >

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Condition

Vehicle information display

Power switch OFF

Not indicated

Power switch ON

Low tire pressure warning lamp remains ON after blinking for one 
minute. [Tire Pressure Monitoring System (TPMS) malfunction.]

Not indicated

Power switch ON

Low tire pressure warning lamp remains ON. (low tire pressure)

Indicated

WT-10

< SYSTEM DESCRIPTION >

SYSTEM

SYSTEM

System Description

INFOID:0000000010120178

When the vehicle has reached a speed of 40 km/h (25 MPH) or greater, the BCM receives a signal transmitted

from the tire pressure sensors/transmitters installed in each wheel. If the BCM detects low inflation pressure or

a system malfunction, it sends a signal to the combination meter via CAN communication to illuminate the low

tire pressure warning lamp. Refer to the Owner’s Manual for additional information.

The tire pressure monitoring system (TPMS) has Easy Fill tire alert function to aid in tire inflation. Refer to 

WT-

11, "Easy Fill Tire Alert Function"

.

SYSTEM DIAGRAM

INPUT/OUTPUT SIGNAL

Major signal transmission between each unit via communication lines is shown in the following table:

LOW TIRE PRESSURE WARNING LAMP INDICATION CONDITION

Uses CAN communication from the BCM to illuminate the low tire pressure warning lamp on the combination

meter.

HAZARD WARNING LAMP INDICATION CONDITION

The hazard warning lamp blinks under the following conditions:

ALEIA0192GB

Component parts

Signal item

Combination meter

Mainly receives the following signals from BCM via CAN communication:
• Low tire pressure warning lamp signal
• TPMS malfunction warning lamp signal

ABS actuator and electric unit (con-
trol unit)

Mainly transmits the following signals to BCM via CAN communication:
• Vehicle speed signal (ABS)

VCM (Vehicle Control Module)

Mainly transmits the following signals to BCM via CAN communication:
• Shift position signal (P range signal)

IPDM E/R

Mainly transmits the following signals to BCM via CAN communication:
• Horn reminder signal

Condition

Low tire pressure warning lamp

Power switch OFF

OFF

Power switch ON
(System normal)

Warning lamp turns on for 1second, then turns off.

Low tire pressure

ON

Tire pressure sensor ID not registered in BCM

Tire pressure monitoring system malfunction
(Other diagnostic item)

Warning lamp blinks 1 min, then turns on.