Nissan Pathfinder: Steering System - System Description

Nissan Pathfinder (R53) 2022-2025 Service Manual / Steering :: Steering System / System Description

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

Component Parts. Heated Steering Wheel System Nissan Pathfinder

Component Parts Location

View of the front A/C switch assembly removed

Left side of instrument panel

(view with instrument panel lower LH removed)

No.	Component	Function
1.	A/C auto amp.	Refer to A/C Auto Amp..
2.	Combination switch (spiral cable)	The spiral cable provides a rotating physical connection to the steering wheel. Refer to Exploded View for detailed component location.
3.	Heated steering wheel	Refer to Heated Steering Wheel.
4.	Front A/C switch assembly (Heated steering wheel switch)	Refer to Heated Steering Wheel Switch.
5.	Heated steering wheel relay and back-up lamp relay (heated steering wheel relay)	Refer to Heated Steering Wheel Relay and Back-Up Lamp Relay (Heated Steering Wheel Relay).

Heated Steering Wheel

With the power supply from the heated steering wheel relay and back-up lamp relay (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 and Back-Up Lamp Relay (Heated Steering Wheel Relay)

Through the control of the A/C auto amp., the heated steering wheel relay and back-up lamp relay (heated steering wheel relay) turns ON/OFF electricity to the heating element built-in the steering wheel. Refer to Component Parts Location for detailed component location.

A/C Auto Amp.

The A/C auto amp. is installed to the blower unit assembly.
A/C auto amp. turns ON/OFF the heated steering wheel relay and back-up lamp relay (heated steering wheel relay), according to a signal transmitted from front A/C switch assembly via LIN communication.
The A/C auto amp. includes a timer. The heated steering wheel relay and back-up lamp relay (heated steering wheel relay) is turned OFF when the timer operating time reaches 30 minutes.
- Timer: Turns ON/OFF the heated steering wheel relay and back-up lamp relay (heated steering wheel relay) for a specified period of time.

Heated Steering Wheel Switch

The heated steering wheel switch is integrated in the front A/C switch assembly and is used to activate heated steering wheel.
The front A/C switch assembly transmits the heated steering wheel switch signal to the A/C auto amp. via LIN communication line.

System. Heated Steering Wheel System Nissan Pathfinder SUV

System Description

SYSTEM DIAGRAM

A/C AUTO AMP. INPUT SIGNAL
Component parts	Signal description
Front A/C switch assembly (heated steering wheel switch)	Transmits the heated steering wheel switch signal to the A/C auto amp. via LIN communication.
Heated steering wheel relay and back-up lamp relay (heated steering wheel relay)	Transmits the heated steering wheel relay and back-up lamp relay (heated steering wheel relay) signal to the A/C auto amp.

System Description

The heated steering wheel switch controls the heated steering wheel relay and back-up lamp relay (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.