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).
C1110, C1153, C1170 ABS actuator and electric unit (control unit)
DTC Logic
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.CHECK SELF-DIAGNOSIS RESULTS
Check the self-diagnosis results.
Diagnosis Procedure
1.REPLACE ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
CAUTION:
Replace ABS actuator and electric unit (control unit) when self-diagnostic
...
Jacking up vehicle and removing the damaged tire
WARNING
Never get under the vehicle while it is
supported only by the jack. If it is necessary
to work under the vehicle, support
it with safety stands.
Use only the jack provided with your
vehicle to lift the vehicle. Do not use the
jack provided with your vehicle on other
veh ...
P0101 MAF sensor
Description
The mass air flow sensor (1) is placed in the stream of intake air. It
measures the intake flow rate by measuring a part of the entire
intake flow. The mass air flow sensor controls the temperature of the
hot wire to a certain amount. The heat generated by the hot wire is ...