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Nissan Sentra B18 (2020-2025) Service Manual / Steering / Steering System :: System Description

Nissan Sentra B18 (2020-2025) Service Manual: Steering System :: System Description

Component Parts. Heated Steering Wheel System. Heated Steering Wheel System

Component Parts Location

Component Parts Location

No.

Component

Function

1.

Heated steering wheel relay

Refer to Heated Steering Wheel Relay.

2.

A/C auto amp.

Refer to A/C Auto Amp.

3.

A/C switch assembly (heated steering wheel switch)

The heated steering wheel switch is integrated into the A/C switch assembly and is used to activate/deactivate the heated steering wheel system.

Refer to Component Parts Location for detailed component location.

4.

Combination switch (spiral cable)

The spiral cable provides a rotating physical connection to the steering wheel.

Refer to Component Parts Location for detailed component location.

5.

Heated steering wheel

Refer to Heated Steering Wheel.

Heated Steering Wheel

Heated Steering Wheel

With the power supply from the heated steering wheel relay, the heated steering wheel controls temperature through the heating element 1 and thermostat 2 built into the steering wheel.

  • Heating element: Generates heat by energization.

    Note:

    Heating element is located at the back of the steering wheel leather surface.

  • Thermostat: Turns ON/OFF power supply according to the specified temperature.

Heated Steering Wheel Relay

Heated Steering Wheel Relay

Through the control of the A/C auto amp., the heated steering wheel relay turns ON/OFF electricity to the heating element built-in the steering wheel. For location, refer to Component Parts Location.

A/c Auto Amp.

A/C Auto Amp.

  • Located behind front side of center console.

  • A/C auto amp. turns ON/OFF the heated steering wheel relay, according to the heated steering wheel switch signal transmitted from the A/C switch assembly via LIN communication.

  • The A/C auto amp. includes a timer. The heated steering wheel relay is turned OFF when the timer operating time reaches 30 minutes.

    • Timer: Turns ON/OFF the heated steering wheel relay for a specified period of time.

  • For other information of A/C auto amp., refer to A/C Auto Amp.

Heated Steering Wheel Switch

Heated Steering Wheel Switch

  • The heated steering switch is integrated in the A/C switch assembly and is used to activate heated steering wheel.

  • The A/C switch assembly transmits the heated steering wheel switch signal to the A/C auto amp. via LIN communication.

System. Heated Steering Wheel System. Heated Steering Wheel System

System Description

System Description

SYSTEM DIAGRAM

INPUT SIGNAL AND OUTPUT SIGNAL

Switch

Input signal to A/C auto amp.

A/C auto amp. function

Actuator

Heated steering wheel switch

Switch ground signal

Heated steering wheel control

Heated steering wheel

DESCRIPTION

The heated steering wheel switch controls the heated steering wheel relay through the A/C auto amp. When the switch is turned on, the relay is energized and the heated steering system will operate. The heated steering system will turn off when the steering wheel temperature reaches approximately 86°F (30°C). Heated steering system operation can also be canceled by pressing the heated steering wheel switch again. If the surface temperature of the steering wheel is below 68°F (20°C), the system will heat the steering wheel and cycle off and on to maintain a temperature above 68°F (20°C). The indicator light will remain on as long as the system is on.

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