Nissan Maxima Service and Repair Manual: System description
CLIMATE CONTROLLED SEAT SYSTEM
System Diagram

System Description
- The climate controlled seat system is controlled by the climate
controlled seat control unit.
- Operation of the climate controlled seat switch sends heated or
cooled airflow and adjusts the seat temperature.
SEAT CUSHION AND SEATBACK TEMPERATURE ADJUSTMENT FUNCTION
- A thermal electric device (TED) unit is installed in the seat
cushion and seatback. The device heats or cools,
sends airflow to the seat surface, and adjusts the seat temperature.
- The thermal electric device (TED) is a heat exchanger that has a
function to heat or cool the airflow from the
climate controlled seat blower motor. By changing the direction of the
current from the power supply, the
device takes or gives heat, and adjusts the heat exchange process depending
on voltage.
NOTE:
The climate controlled seat blower motor maintains low speed for
approximately 60 seconds after turning the
climate controlled seat switch off.
CAUTION:
- The thermal electric device has a dual-climate
function that allows one side to operate at a high temperature
and the other to operate at a low temperature simultaneously.
- Before starting work, always turn OFF the switch and
check that the thermal electric device is cold.
FAIL-SAFE
The fail-safe function is adopted for the climate controlled seat control
unit. Refer to SE-26, "Fail-safe".
Component Parts Location

- Climate controlled seat switch M302
- Climate controlled seat relay M58
- Seatback thermal electric device B218
- Seat cushion thermal electric device
B219
- Climate controlled seat control unit
B212, B216, B217
- Climate controlled seat blower motor
B220
Component Description

DIAGNOSIS AND REPAIR WORK FLOW
Work Flow
OVERALL SEQUENCE
DETAILED FLOW
1.GET INFORMATION FOR SYMPTOM
Get detailed information from the customer about the symptom (the condition
and the envir ...
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