TOYOTA PREVIA 91-97 REPAIR MANUAL

CHASSIS ELECTRICAL 6-17

*»You can first remove the blower motor and the blower before sep-
arating them.

To install:

7. To assemble the motor assembly:
   a. Temporarily secure the blower to the blower motor.
   b. Place the blower motor unit on the blower lower case.
   c. Visually adjust the blower protrusion so that the clearance between
   the blower and the blower case on the right side is equal to that of the
   left side.
   d. Tighten the screw and check that the blower rotates smoothly.
   Assemble the blower upper case to the lower case.


8. Install the blower motor assembly to the upper case.


9. Install the lower case and secure it to the upper case.


10. Install the right and left air filters to the lower case.


11. Install the right and left suction grills, and the register grill to the
    lower case.


12. Connect the negative battery cable.

Blower Motor Resistor

REMOVAL & INSTALLATION

Remove the front blower motor unit assembly from the vehicle. Remove
the two retaining screws and extract the resister from the housing. Insert the
resister into the housing and secure with the screws. Install the blower
motor housing into the vehicle. Refer to Blower Motor (front) removal and
installation in this section.

Ice Box Motor

REMOVAL & INSTALLATION

1. Disconnect the negative battery cable. Wait at least 90 seconds on
   models equipped with an airbag after disconnection.


2. Remove the cool/ice box amplifier if necessary.


3. Detach the upper case from the ice box assembly.


4. Unbolt and disconnect the wiring from the blower motor, then extract
   the motor from the lower case.
   To install:


5. Connect the wiring of the motor to the harness.


6. Attach and secure the blower motor inside the ice box.


7. Attach the upper cover to the lower portion of the box.


8. Install the amplifier if removed.


9. Connect the negative battery cable.

Heater Water Control Valve

REMOVAL & INSTALLATION

1. Partially drain the engine coolant


2. Mark and disconnect the cable from the heater control valve.


3. Disconnect the heater hoses from the heater control valve.

-»Be careful not to pull on the heater core tubes when removing the
heater hoses, since the heater core can be easily damaged.

4. Remove the bolt and the heater control valve.
   To install:


5. Install the bolt and the heater control valve.


6. Connect the heater hoses to the heater control valve, making sure
   that the hoses and the clamps are past the outer flaring of the heater control
   valve tubes. Use new clamps.


7. Install the control cable to its premarked position.


8. Fill the cooling system, then start and warm the engine, making sure
   it stays full.


9. Stop the engine, pressure test the cooling system and check for
   leaks. Check for proper heater operation.

Air Conditioning Components

REMOVAL & INSTALLATION

Repair or service of air conditioning components is not covered by this

manual, because of the risk of personal injury or death, and because of the

legal ramifications of servicing these components without the proper EPA

certification and experience. Cost, personal injury or death, environmental

damage, and legal considerations (such as the fact that it is a federal crime

to vent refrigerant into the atmosphere), dictate that the A/C components on

your vehicle should be serviced only by a Motor Vehicle Air Conditioning

(MVAC) trained, and EPA certified automotive technician.

i»lf your vehicle's A/C system uses R-12 refrigerant and is in need of

recharging, the A/C system can be converted over to R-134a refriger-

ant (less environmentally harmful and expensive). Refer to Section 1

for additional information on R-12 to R-134a conversions, and for

additional considerations dealing with your vehicle's A/C system.

Control Cables

REMOVAL & INSTALLATION

1. Remove the control panel.


2. Disengage the adjusting clip at the heater/cooling unit end of the cable.


3. Disengage the end of the control cable from the control lever.


4. Remove the cable from the vehicle.
   To install:


5. Attach the cable to the end of the lever on the A/C or heater box.


6. Route the cable through the dash to the control lever and secure to
   the back of the unit.


7. Adjust the cable.


8. Install the control panel.

ADJUSTMENT

Air Inlet Door

I See Figure 41

1. Disengage the control cable from the lever at the heater/cooling unit
   end of the cable.

Air Damper Case

Blower Unit

Fig. 41 Setting the air inlet door cable