System Diagram
System Description
Fan speed is automatically controlled by the temperature setting, ambient temperature, in-vehicle temperature, intake temperature, amount of sunload and air mix door position.
By pressing the AUTO switch, the blower motor starts to gradually increase airflow volume.
When engine coolant temperature is low, the blower motor operation is delayed to prevent cool air from flowing.
SYSTEM OPERATION
System Operation
Normal Automatic Airflow Control
Fan Speed Control Specification
Starting Airflow Control
Starting Fan Speed Control
Start-up from COLD SOAK Condition (Automatic mode) In cold start-up condition, where the engine coolant temperature is below 56C (133F), the blower does not operate for a short period of time (up to 150 seconds). The exact start delay time varies depending on the ambient temperature and engine coolant temperature.
In the most extreme case (very low ambient temperature) the blower start delay is 150 seconds, as described above. After this delay, the blower will operate at low speed until the engine coolant temperature rises above 56C (133F), and then the fan speed increases to the objective speed.
Start-up from usual or HOT SOAK Condition (Automatic mode) The blower will begin operation momentarily after the AUTO switch is pressed. The fan speed rises gradually to the objective speed over a time period of 3 seconds or less (actual time depends on the objective fan speed).
EVAP canister vent control valve
Removal and Installation
REMOVAL
Remove rear stabilizer bar clamps and position rear stabilizer bar
aside. Refer to RSU-13, "Removal and Installation".
Disconnect breather hose from EVAP canister.
Disconnect EVAP canister vent control valve.
Turn EVAP canister v ...
Lifting switch (front)
Description
Lifting switch (front) is equipped to the power seat switch LH on the seat
frame. The operation signal is input to the driver seat control unit when the
lifting switch (front) is operated.
Component Function Check
1. CHECK FUNCTION
Select "LIFT FR SW-UP", "LIFT FR SW-DN" in "D ...
U1010 control unit (CAN)
Description
CAN (Controller Area Network) is a serial communication line for real time
application. It is an on-vehicle multiplex
communication line with high data communication speed and excellent malfunction
detection ability.
Many electronic control units are equipped onto a vehicle, an ...