bulb TOYOTA RAV4 1996 Service User Guide

Fig. 4: Testing Center Differential Lock Control Switch
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
CENTER DIFFERENTIAL LOCK INDICATOR LIGHT SWITCH
With switch off (released), ensure no continuity exists between switch terminals No. 1 and No. 2. With switch
on (pushed in), ensure continuity exists between switch terminals No. 1 and No. 2. Replace indicator light
switch if continuity is not as specified.
CENTER DIFFERENTIAL LOCK SOLENOID
Disconnect connector from solenoids No. 1 and No. 2. Check for continuity to each port. Apply battery voltage
to vacuum switching valve terminals and check air flow across passage ports. Disconnect battery voltage and
ensure air flow across passage ports changes. Replace center differential lock solenoid if necessary.
INTEGRATION RELAY
1. Connect positive battery voltage to terminals No. 12 and No. 20. Connect negative battery voltage to
terminal No. 11. See WIRING DIAGRAMS
.
2. Ensure bulb lights up and buzzer sounds for 4-8 seconds. Repeat step 1 . Connect positive battery voltage
to terminal No. 20. Ensure buzzer stops sounding.

1999 Toyota RAV4
1999-2000 DRIVE AXLES Center Differential Lock
Microsoft
Sunday, November 22, 2009 10:08:59 AMPage 6 © 2005 Mitchell Repair Information Company, LLC.

Blown fuse or poor contact. Defogger switch defective. Poor connections. Broken wire. Relay defective.
INDICATOR LIGHT DOES NOT WORK
Bulb burned out. Open wire or poor connection.
REAR WINDOW DEFOGGER SYSTEM CHECK
1. Ensure all in-line fuses or circuit breakers are okay. Turn ignition and control switches to ON position.
Glass should feel warm after a few minutes.
2. If glass is not warm, use a test light or voltmeter to check for battery voltage at grid feed wire. If voltage
is not correct, check wiring harness, control switch and timer/relay.
SYSTEM TESTS
DEFOGGER SWITCH CIRCUIT
2000 Celica
1. Disconnect defogger switch 10-pin connector. Check continuity between ground and defogger switch
harness connector terminal No. 3 (White/Black wire). See Fig. 2
. If continuity exists, go to next step. If
continuity does not exist, repair ground circuit as necessary. See WIRING DIAGRAMS
.
2. Turn ignition on. Measure voltage between ground and defogger switch harness connector terminal No. 5
(Red/White wire). Battery voltage should exist. With ignition switch in LOCK or ACC position, no
voltage should exist. If voltage is as specified, go to next step. If voltage is not as specified, repair
appropriate circuit as necessary. See WIRING DIAGRAMS
.
3. Connect defogger switch harness connector. Turn ignition on. Measure voltage between ground and
defogger switch connector (backprobe) terminal No. 5 (Red/White wire). Battery voltage should exist.
Turn defogger switch to ON position. No voltage should exist. If voltage is not as specified, replace
defo
gger switch and retest system.

1999 Toyota RAV4
1999-2000 ACCESSORIES & EQUIPMENT Rear Window & Mirror Defoggers
Microsoft
Sunday, November 22, 2009 10:55:10 AMPage 2 © 2005 Mitchell Repair Information Company, LLC.

panel if operation is not as specified.
Fig. 8: Testing Rear Window Defogger Switch (2000 Avalon With Automatic A/C
-Heater System)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
Camry & Camry Solara
1. Remove rear defogger switch. Terminals No. 2 and 6 are for bulb illumination. Using an ohmmeter,
check for continuity between terminals No. 2 and 6 of switch. See Fig. 9
. Continuity should exist at all
times. If continuity does not exist, check illumination bulb.
2. Connect battery positive lead to terminal No. 4, and battery negative lead to terminal No. 3. See Fig. 9
.
Connect a 3.4-watt test light between battery voltage and terminal No. 5. Turn defogger on. Ensure test
light comes on for 12-18 minutes and then goes out. If switch does not operate as specified, replace
switch.

1999 Toyota RAV4
1999-2000 ACCESSORIES & EQUIPMENT Rear Window & Mirror Defoggers
Microsoft
Sunday, November 22, 2009 10:55:10 AMPage 12 © 2005 Mitchell Repair Information Company, LLC.

Fig. 9: Identifying Defogger Switch Terminals (Camry, Camry Solara, 1999 Celica, Corolla, Sienna,
Tercel & 4Runner)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
1999 Celica
1. Backprobe defogger switch terminal No. 5 with positive voltmeter lead and terminal No. 4 with negative
lead. See Fig. 9
. Ensure battery voltage exists with defogger switch in OFF position. Turn defogger
switch to ON position. Ensure indicator light is on and less than one volt exists. If voltage is not as
specified, replace switch.
2. Terminals No. 2 and 6 are for bulb illumination. Using an ohmmeter, check for continuity between switch
terminals No. 2 and 6. See Fig. 9
. Continuity should exist at all times.
3. If defogger switch is equipped with timer, ensure defogger switch turns off and battery voltage is again
present after 12-18 minutes. If defogger switch does not operate as specified, replace switch.
2000 Celica
1. Disconnect defogger switch 10-pin connector. Connect a jumper wire between battery positive and
defogger switch terminal No. 1. See Fig. 2
. Connect another jumper wire between ground and terminal
No. 3.
2. Connect a 3.4-watt test light between battery positive and defogger switch terminal No. 5. Turn defogger
switch to ON position. Test light and indicator light should illuminate on for 12-18 seconds, then turn off.
If operation is not as specified, replace defogger switch.
Corolla (With Timer)
Disconnect defogger switch 6-pin connector. Connect fused jumper between battery positive lead and terminal
No. 2 and battery negative lead to terminal No. 3 (switch side). Connect a 3.4-watt test light between terminal
No. 6 and battery voltage. See Fig. 10 . Push defogger switch to ON position. Ensure test light and indicator

1999 Toyota RAV4
1999-2000 ACCESSORIES & EQUIPMENT Rear Window & Mirror Defoggers
Microsoft
Sunday, November 22, 2009 10:55:10 AMPage 13 © 2005 Mitchell Repair Information Company, LLC.

light come on for 12-18 minutes and then goes out. If switch does not operate as specified, replace switch.
Fig. 10: Testing Defogger Switch With Timer (Corolla & Tercel)

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
Corolla (Without Timer)
Disconnect defogger switch 6-pin connector. With defogger switch on, ensure continuity exists between
terminals No. 3 and 6. See Fig. 9
. With switch off, continuity should not exist between any terminals. Check
continuity between terminals No. 1 and 4 (light bulb). Continuity should exist at all times. If continuity is not as
specified, replace switch.
ECHO (With Timer)
1. Disconnect defogger switch 4-pin connector. Connect a jumper wire between battery positive terminal
and defogger switch terminal No. 3. See Fig. 11
. Connect another jumper wire between ground and
terminal No. 4.
2. Connect a 3.4-watt test light between battery positive and terminal No. 2. Turn defogger switch to ON
position. Indicator light and test light should come on, then turn off after 12-18 minutes. Replace switch i
f
operation is not as specified.
ECHO (Without Timer)

1999 Toyota RAV4
1999-2000 ACCESSORIES & EQUIPMENT Rear Window & Mirror Defoggers
Microsoft
Sunday, November 22, 2009 10:55:10 AMPage 14 © 2005 Mitchell Repair Information Company, LLC.

Fig. 13: Identifying Defogger Switch Terminals (RAV4)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
Sienna
1. Remove defogger switch. Terminals No. 1 and 4 are for bulb illumination. Check continuity between
defogger switch terminals No. 1 and 3. See Fig. 9
. Continuity should exist at all times. If continuity does
not exist, check illumination bulb.
2. Connect a jumper wire between battery positive and terminal No. 2. Connect another jumper wire
between ground and terminal No. 4. Connect a 3.4-watt test light between battery positive and terminal
No. 6. Turn defogger on. Ensure test light comes on for 12-18 minutes and then goes out. If switch does
not operate as specified, replace switch.
Tercel
1. Remove defogger switch. Terminals No. 1 and 4 are for bulb illumination. Check continuity between
defogger switch terminals No. 1 and 4. See Fig. 9
. If continuity exists, go to next step. If continuity does
not exist, check illumination bulb.
2. On models without timer, check continuity between defogger switch terminals No. 2, 3 and 6 with switch
in ON position. See Fig. 9
. With defogger switch off, continuity should not exist between any terminals.
If continuity is not as specified, replace defogger switch and retest system.
3. On models with timer, connect jumper wire between battery positive lead and defogger switch terminal
No. 2. Connect another jumper wire between ground and terminal No. 3. Connect a 3.4-watt test light
between battery positive and terminal No. 6. See Fig. 10
. Turn defogger switch to ON position. Ensure
indicator light and test light come on for 12-18 minutes and then go out. If defogger switch with timer
does not operate as specified, replace switch.
4Runner

1999 Toyota RAV4
1999-2000 ACCESSORIES & EQUIPMENT Rear Window & Mirror Defoggers
Microsoft
Sunday, November 22, 2009 10:55:10 AMPage 17 © 2005 Mitchell Repair Information Company, LLC.

1999-2000 ACCESSORIES & EQUIPMENT
Instrument Panels - Trucks
DESCRIPTION & OPERATION
GAUGES
Standard instrument clusters contain fuel and temperature gauges with telltale warning lights. Some optional
instrument panels are equipped with a tachometer, oil pressure gauge and voltmeter. Gauge internal operating
components use either a 2-terminal bimetallic strip type or a 3-terminal coil type. The 2-terminal type gauges
are generally used on clusters without tachometers.
SWITCHES
All models contain hazard warning switch on instrument panel. All models use a combination switch for
headlight, turn signal, wiper/washer, and cruise control switches. Combination switch is mounted on steering
column. For testing and/or removal and installation procedures for combination switch components, see
appropriate STEERING COLUMN SWITCHES article.
COMPONENT TESTS
A/T OIL TEMPERATURE SWITCH
RAV4
1. Turn ignition switch to OFF position. Disconnect A/T oil temperature switch 1-pin connector. Switch is
located on side of transaxle, near park/neutral position switch. Remove A/T oil temperature switch. Place
probe end of switch and thermometer in a container of water.
2. Connect an ohmmeter between switch terminal and switch body. Heat water and check for continuity.
With temperature at 284-302°F (140-150°C), continuity should exist. If continuity does not exist, replace
switch.
A/T OIL TEMPERATURE WARNING LIGHT
RAV4
Disconnect A/T oil temperature switch connector. Switch is located on side of transaxle, near park/neutral
position switch. Using a jumper wire, connect switch connector terminal to ground. Turn ignition switch to ON
position. A/T oil temperature warning light should be on. If warning light is off, check bulb and wiring harness.
Repair as necessary. WARNING:Deactivate air bag system before performing any service operation. See
AIR BAG RESTRAINT SYSTEMS article. DO NOT apply electrical power to
any component on steering column without first deactivating air bag
system. Air bag may deploy.

1999 Toyota RAV4
1999-2000 ACCESSORIES & EQUIPMENT Instrument Panels - Trucks

1999 Toyota RAV4
1999-2000 ACCESSORIES & EQUIPMENT Instrument Panels - Trucks
Microsoft
Sunday, November 22, 2009 10:54:09 AMPage 1 © 2005 Mitchell Repair Information Company, LLC.
Microsoft
Sunday, November 22, 2009 10:54:14 AMPage 1 © 2005 Mitchell Repair Information Company, LLC.

BRAKE FLUID LEVEL SWITCH
Remove cap and strainer from brake fluid reservoir. Disconnect brake fluid level switch connector. Check for
continuity between brake fluid level switch terminals. With reservoir full (float up), continuity should not exist.
With reservoir empty (float down), continuity should exist. If continuity is not as specified, replace brake fluid
level switch.
BRAKE WARNING LIGHT
Disconnect brake fluid warning switch connector. Release parking brake. Using a jumper wire, connect brake
fluid warning switch connector terminals together. Turn ignition switch to ON position. Brake warning light
should be on. If brake warning light is off, check bulb and wiring harness. Repair as necessary.
BULB CHECK RELAY
Tacoma & 4Runner
1. Bulb check relay is located on back of instrument cluster. See Fig. 5 . Turn ignition switch to OFF
position. Remove instrument cluster. Using a jumper wire, connect negative battery terminal to bulb
check relay terminal "B". See Fig. 1
.
2. Using another jumper wire, connect a 12-volt, 1.4-watt test light between positive battery terminal and
bulb check relay terminal "C". Test light should be off. Connect another jumper wire between positive
battery terminal and bulb check relay terminal "A". Test light should be on. If test light does not
illuminate as specified, replace relay.

1999 Toyota RAV4
1999-2000 ACCESSORIES & EQUIPMENT Instrument Panels - Trucks
Microsoft
Sunday, November 22, 2009 10:54:09 AMPage 2 © 2005 Mitchell Repair Information Company, LLC.

Fig. 1: Testing Bulb Check Relay (Tacoma & 4Runner)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
DOOR COURTESY SWITCH
Land Cruiser, RAV4, Sienna & 4Runner
Turn ignition switch to OFF position. Locate door courtesy switch in door jamb. Check for continuity between
door courtesy switch terminal and switch body. With switch pin released (switch ON), continuity should exist.
With switch pin pushed in (switch OFF), no continuity should exist. If continuity is not as specified, replace
door courtesy switch.
ENGINE COOLANT TEMPERATURE GAUGE & SENDER
Wiring Harness Operational Test
1. Disconnect coolant temperature sender connector. See ENGINE COOLANT TEMPERATURE
SENDER LOCATION table. Turn ignition switch to ON position. Temperature gauge should indicate
COOL. Turn ignition switch to OFF position. Connect a 12-volt, 3.4-watt test light between coolant
temperature sender harness connector terminal and
ground.

1999 Toyota RAV4
1999-2000 ACCESSORIES & EQUIPMENT Instrument Panels - Trucks
Microsoft
Sunday, November 22, 2009 10:54:09 AMPage 3 © 2005 Mitchell Repair Information Company, LLC.

Fig. 10: Identifying Fuel Sending Unit Harness Connector Terminals (RAV4 - Sub Unit)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
Low Fuel Warning Light (RAV4, Sienna, Tacoma With Tachometer & 4Runner)
Disconnect connector from fuel sending unit at fuel tank (main unit on RAV4). Connect a jumper wire between
fuel sending unit wiring harness connector terminals No. 1 and 3. See Fig. 9
and Fig. 10 . Turn ignition on.
Instrument cluster low fuel warning light should be on. If low fuel warning light is off, check bulb or wiring
harness. Repair as necessary.
Low Fuel Warning Light Sensor Operational Test (RAV4, Sienna, Tacoma With Tachometer, Tundra & 4Runner)
1. Remove fuel sending unit from gas tank. Using a jumper wire, connect negative battery terminal to fuel
sending unit terminal No. 3. See Fig. 9
and Fig. 10 . Using another jumper wire, connect a 12-volt, 3.4-
watt test light between positive battery terminal and fuel sending unit terminal No. 1.
2. With sending unit float/sensor dry, test light should come on in about 40 seconds. With sending unit
float/sensor submerged in gasoline or water, test light should turn off. If test light does not function as
specified, replace fuel gauge sending unit.
Fuel Gauge Resistance Test
Remove instrument cluster. Disconnect cluster connectors. Using an ohmmeter, measure resistance between
appropriate fuel gauge terminals on back of instrument cluster. See Fig. 2
-Fig. 8 . See FUEL GAUGE
RESISTANCE SPECIFICATIONS table. If resistance is not as specified, replace fuel gauge.

1999 Toyota RAV4
1999-2000 ACCESSORIES & EQUIPMENT Instrument Panels - Trucks
Microsoft
Sunday, November 22, 2009 10:54:10 AMPage 16 © 2005 Mitchell Repair Information Company, LLC.