SYSTEM DESCRIPTION
1. GENERAL
(a) The air conditioning system has the following controls.
Control |
Outline |
---|---|
Manual Control |
The air conditioner amplifier assembly controls the damper positions (air inlet control damper, air mix control damper and mode control damper) and blower speed in accordance with the positions of the switches (temperature control dial, blower dial, mode select dial and air inlet control switch). |
Air Inlet Control |
Drives the air inlet servo motor (damper servo sub-assembly) according to the operation of the air inlet control switch and moves the dampers to the fresh or recirculation position. |
Compressor Control |
Controls the compressor with magnet clutch assembly to turn on or off based on the signals from various sensors. |
MAX Air Conditioning Control |
When the temperature control dial is turned to the MAX A/C position, the air conditioner amplifier assembly performs the following control to improve cooling efficiency:
|
Diagnosis |
A Diagnostic Trouble Code (DTC) is stored in the memory when the air conditioner amplifier assembly detects a problem with the air conditioning system. |
2. MODE POSITION AND DAMPER OPERATION
(a) Mode Position and Damper Operation
Functions of Main Dampers
Control Door |
Operation Position |
Door Position |
Operation |
|
---|---|---|---|---|
Air Inlet Control Door |
FRESH |
A |
Brings in fresh air. |
|
RECIRCULATION |
B |
Recirculates internal air. |
||
Air Mix Control Door |
MAX COLD to MAX HOT Temperature Setting |
C - D - E (C' - D' - E') |
Varies the mixture ratio of warm air and cool air in order to regulate the temperature continuously between hot and cold. |
|
Mode Control Door |
FACE |
F, J, N |
Air blows out of the front center register and side register. |
|
BI-LEVEL |
G, L, N |
Air blows out of the front center register, side register and front and rear footwell register ducts*. |
||
FOOT |
H, M, O |
Air blows out of the front and rear footwell register ducts*. In addition, air blows out slightly from the front and rear center register*, side register and defroster. |
||
FOOT AND DEFROSTER |
H, M, P |
Defrosts the windshield through the center defroster, side defroster, side register, front and rear center register ducts*, while air is also blown out from the front and rear footwell register ducts*. |
||
DEFROSTER |
I, J, Q |
Defrosts the windshield through the center defroster, side defroster. |
3. AIR OUTLETS AND AIRFLOW VOLUME
(a) Air Outlets and Airflow Volume
HINT:
The size of each circle â—‹ indicates the ratio of airflow volume.
Rear Door(for Access Cab)
Adjustment
ADJUSTMENT
CAUTION / NOTICE / HINT
HINT:
Use the same procedures for both the LH and RH sides.
The procedure described below is for the LH side.
Centering bolts are used to mount the door hinge to the vehicle body
and door. The door cannot be adjusted with the ce ...
Parts Location
PARTS LOCATION
ILLUSTRATION
*A
for Hydraulic Brake Booster
*B
for Vacuum Brake Booster
*C
w/ Toyota Safety Sense P
-
-
*1
BRAKE BOOSTER ASSEMBLY (SKID CONTROL ECU)
...
Low Power Supply Voltage Malfunction (C1241)
DESCRIPTION
If there is a problem with the skid control ECU (master cylinder solenoid) power
supply circuit, the skid control ECU outputs the DTC and prohibits operation under
the fail-safe function.
If the voltage supplied to terminal IG1 is not within the DTC detection threshold
due to mal ...