Description
Provides inputs to the climate controlled seat control unit for climate controlled seat operation.
Component Function Check
1.CHECK CLIMATE CONTROLLED SEAT SWITCH FUNCTION
Turn the climate controlled seat switch to the H (Heat) LO, MED, and HI positions and the C (Cool) LO, MED, and HI positions. Check that the climate controlled seat operates at low, medium and high heat, and low, medium and high cool.
Diagnosis Procedure
Regarding Wiring Diagram information, refer to SE-44, "Wiring Diagram".
1.CHECK CLIMATE CONTROLLED SEAT SWITCH
Perform climate controlled seat switch component inspection. Refer to SE-21, "Component Inspection (Climate Controlled Seat Switch)".
2.CHECK CLIMATE CONTROLLED SEAT SWITCH POWER SUPPLY CIRCUIT


4. Check continuity between climate controlled seat switch connector M302 (A) terminal 1 and ground.

3.CHECK CLIMATE CONTROLLED SEAT SWITCH COOL CIRCUIT


3. Check continuity between climate controlled seat switch connector M302 (A) terminal 2 and ground.

4.CHECK CLIMATE CONTROLLED SEAT SWITCH HEAT CIRCUIT
1. Check continuity between climate controlled seat switch connector M302 (A) terminal 3 and climate controlled seat control unit connector B212 (B) terminal 1.


2. Check continuity between climate controlled seat switch connector M302 (A) terminal 3 and ground.

Component Inspection (Climate Controlled Seat Switch)
1.CHECK CLIMATE CONTROLLED SEAT SWITCH


Seatback thermal electric device
Climate controlled seat switch indicatorP0451 evap control system pressure sensor
Description
The EVAP control system pressure sensor detects pressure in the
purge line. The sensor output voltage to the ECM increases as pressure
increases
DTC Logic
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
NOTE:
Never remove fuel filler cap during DTC confirmation procedur ...
Mode door control system
System Diagram
System Description
The mode door is automatically controlled by the temperature setting, ambient
temperature, in-vehicle temperature,
intake temperature and amount of sunload.
SYSTEM OPERATION
The A/C auto amp. receives data from each of the sensors.
The A/C auto amp. ...
Microphone signal circuit
Description
Voice signals are transmitted from the microphone to the AV control unit
using the microphone signal circuits.
Diagnosis Procedure
1.CHECK HARNESS BETWEEN AV CONTROL UNIT AND MICROPHONE
Turn ignition switch OFF.
Disconnect AV control unit connector and microphone connector ...