1999 HEATER SYSTEMS
RAV4, Tacoma & 4Runner
DESCRIPTION
Major components of the heater system are a heater core, control panel, blower motor, water valve, hoses,
control cables and air ducts. 4Runner may be equipped with a dual heater system with separate controls for
front and rear. Rear temperature and blower controls are located in the console between front seats.
OPERATION
BLOWER SWITCH
Switch controls blower motor speed through blower resistor. Blower speed is adjusted by control lever, knob or
push button.
CONTROL PANEL
Temperature and mode knobs or levers are connected by cable to heater coolant valve and air doors. All models
have a fresh/recirculation lever to provide choice of outside air or recirculated inside air.
HEATER RELAY
A heater (or main) relay controls current through system. For location of heater (main) relay, see WIRING
DIAGRAMS .
ADJUSTMENTS
AIR INLET DAMPER CABLE
Set air inlet damper and control lever to fresh (recirculated on RAV4) air position. Remove cable retaining clip,
and ensure damper and cable are in full fresh (recirculated on RAV4) air position. Install control cable clip.
Check operation of air intake damper.
AIRFLOW MODE DAMPER CABLE WARNING:To avoid injury from accidental air bag deployment, read and carefully
follow all SERVICE PRECAUTIONS and DISABLING & ACTIVATING AIR
BAG SYSTEM procedures in AIR BAG SYSTEM SAFETY article in
GENERAL SERVICING.
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.
1999 Toyota RAV4
1999 HEATER SYSTEMS RAV4, Tacoma & 4Runner
1999 Toyota RAV4
1999 HEATER SYSTEMS RAV4, Tacoma & 4Runner
Microsoft
Sunday, November 22, 2009 10:30:50 AMPage 1 © 2005 Mitchell Repair Information Company, LLC.
Microsoft
Sunday, November 22, 2009 10:30:55 AMPage 1 © 2005 Mitchell Repair Information Company, LLC.
