Nissan Sentra B18 (2020-2025) Service Manual: Low Tire Pressure Warning

Nissan Sentra B18 (2020-2025) Service Manual / Suspension / Road Wheels & Tires :: System Description / System / Low Tire Pressure Warning

System Description

System Description

SYSTEM DIAGRAM

INPUT SIGNAL AND OUTPUT SIGNAL

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

Component parts	Signal item
BCM	Mainly transmits the following signals to the combination meter via CAN communication: Low tire pressure warning lamp signal Low tire pressure wheel location signal TPMS malfunction warning lamp signal
Combination meter	Mainly receives the following signals from the BCM via CAN communication: Low tire pressure warning lamp signal Low tire pressure wheel location signal TPMS malfunction warning lamp signal

Component parts

Signal item

BCM

Mainly transmits the following signals to the combination meter via CAN communication:

Low tire pressure warning lamp signal
Low tire pressure wheel location signal
TPMS malfunction warning lamp signal

Combination meter

Mainly receives the following signals from the BCM via CAN communication:

Low tire pressure warning lamp signal
Low tire pressure wheel location signal
TPMS malfunction warning lamp signal

SIGNAL PATH

The BCM receives a signal transmitted from the tire pressure sensors installed in each wheel.
If the BCM detects the following condition, it sends the signal to the combination meter via CAN communication:
- Tire pressure is low
The combination meter turns the low tire pressure warning lamp ON. In addition, warning message will be displayed in the information display.

WARNING/INDICATOR OPERATION CONDITION

Tire pressure is low

WARNING/INDICATOR CANCEL CONDITION

Erasing DTC records.
Tire pressure of all the tires reaches the reference value. For the reference value of tire pressure, refer to Tire Air Pressure.

TIMING CHART

LOW TIRE PRESSURE LOCATION INDICATOR

The low tire pressure location indicator is displayed in the information display of the combination meter with the low tire pressure warning lamp and warning message under the following conditions:

Tire pressure is low.
Tire goes flat.

Type A meter
Design	Message
	Tire Pressure Low Add Air

Type B meter
Design	Message
	Tire Pressure Low Add Air

SYNCHRONIZATION WITH MASTER WARNING LAMP

Applicable to low tire pressure warning lamp lighting by low air pressure.

Refer to System Description.

Tire Pressure Monitoring System

System Description System Description SYSTEM DIAGRAM INPUT SIGNAL AND OUTPUT SIGNAL Major signal transmission between each unit via communication lines is shown in the following table: ...

Tire Pressure Display

System Description System Description The adoption of this function allows tire pressure indication in the information display of the combination meter. Type A meter ...

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