To avoid injury from accidental air bag deployment, read and
carefully follow all SERVICE PRECAUTIONS and DISABLING &
ACTIVATING AIR BAG SYSTEM procedures in the AIR BAG RESTRAINT
SYSTEM article in the ACCESSORIES/SAFETY EQUIPMENT section.
CAUTION: When battery is disconnected, radio will go into anti-theft
protection mode. Obtain radio anti-theft protection code from
owner prior to servicing vehicle.
Slight variations exist among the various manual A/C-heater
systems used. Nippondenso 10-cylinder compressors are used.
Compressors only operate in normal operating temperatures and
pressures set for each model. An electric condenser fan operates at 2
speeds, depending on system pressure and A/C switch position. An A/C
cut-off relay used on 4Runner. Relay is controlled by an engine
coolant temperature switch.
System components used vary depending on model. Most systems
consist of a fan switch, A/C amplifier, evaporator, thermistor, dual-
pressure (high and low) switch, single pressure switch, engine coolant
temperature switch, compressor, condenser, receiver-drier and all the
necessary pipes and hoses. air door operation is controlled through
cable connections. Compressor operation and associated A/C modes are
electrically controlled.
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