TOYOTA PREVIA 91-97 REPAIR MANUAL

6-12 CHASSIS ELECTRICAL

5. Do not expose the steering wheel pad, front air bag sensors or center
   air bag sensor assembly directly to flames or hot air.


6. If the steering wheel pad, front air bag sensors or center air big sen-
   sor assembly have been dropped, or there are cracks, dents or othe| defects
   in the case, bracket or connectors, have them replaced with new ones.


7. Information labels are attached to the periphery of the SRS cojnpo-
   nents. Follow the instructions of the notices.


8. After arming the system, check for proper operation of the SRB warn-
   ing light.


9. If the wiring harness in the SRS system is damaged, have theijentire
   harness assembly replaced.

DISARMING THE SYSTEM

Work must be started only after 90 seconds from the time the igr

switch is turned to the LOCK position and the negative battery cabl

tion

has

been disconnected. The SRS is equipped with a back-up power source so

that if work is started within 90 seconds of disconnecting the negative bat-

tery cable, the SRS may deploy. When the negative terminal cable is dis-

connected from the battery, memory of the clock and radio will be canceled.

Before you start working, make a note of the contents memorized by the

audio memory system. When you have finished work, reset the audio sys-

tems as before and adjust the clock. To avoid erasing the memory of each

system, never use a back-up power supply from outside the vehicle.

ARMING THE SYSTEM

Reconnect the negative battery cable and perform the airbag warning

light check by turning to the ON or ACC position, the air bag warning lamp

will turned ON for approximately 6 seconds. If no malfunctions are detected

in the system, after the 6 second period have elapse, the warning light will

go OFF.

HEATING AND AIR CONDITIONING

Blower Motor Jndenser Receiver Sight Glass

Blower Unit

• Water Valve

Expansion Valve

Front Blower

Resister

Evaporator

Thermistor

Heater Radiator

A/C Control

Assembly

Cool Box Amplifier -

Blower Motor'

Idle Up VSV-

Magnetic Valve.

(with Rear A/C)

Expansion Valve -

Fig. 22 View ol the heating and air conditioning component

Blower Motor

locations

, Compressor

Pressure Switch

Magnetic Valve

(with Cool Box)

Magnetic

Clutch Relay

A/C Cut Relay

A/C Amplifier

Relay Box

• Rear A/C
  Rear A/C Relay
  Fuse and Relay Block


• Heater Relay


• Front Blower High Relay


• Heater CB


• A/C Fuse

Cool Box Unit

Expansion

Evaporator

Blower Resistor

Rear Cooling

Unit

Evaporator