TOYOTA RAV4 1996 Service Repair Manual

Fig. 2: Identifying Headlight Control Relay Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
HEADLIGHT DIMMER RELAY
Except Land Cruiser & Tundra Without DRL
Remove dimmer relay located on left side of engine compartment, in relay block No. 2. Continuity should exist
between relay terminals No. 1 and 4, and 2 and 4 at all times. For relay terminal locations, see Fig. 3
.
Continuity should not exist between relay terminals No. 3 and 4. Apply battery voltage across relay terminals
No. 2 and 4. Continuity should now exist between relay terminals No. 3 and 4. If continuity is not as specified,
replace rela
y.
NOTE: For Land Cruiser, use testing procedure for headlight control relay. See
HEADLIGHT CONTROL RELAY
. Tundra without Daytime Running Lights (DRL)
does not use headlight dimmer relay.

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Fig. 3: Headlight Dimmer Relay Terminals (Except Land Cruiser & Tundra Without DRL)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
TAILLIGHT CONTROL RELAY
Remove taillight control relay. See TAILLIGHT CONTROL RELAY LOCATION
table. Continuity should
exist between relay terminals No. 1 and 2 at all times. See Fig. 4
or Fig. 5 . Apply battery voltage across
specified terminals of relay connector. See TAILLIGHT CONTROL RELAY TEST
table. Check for
continuity between other specified terminals. If there is no continuity, replace relay.
TAILLIGHT CONTROL RELAY LOCATION
TAILLIGHT CONTROL RELAY TEST
NOTE: Tundra uses an integration relay instead of taillight relay. Integration relay
testing information is not available. 4Runner does not use a taillight relay.
ApplicationLocation
Land Cruiser & RAV4Behind Left Kick Panel, In Junction Block No. 1
SiennaUnder Left Side Of Dash, In Junction Block No. 1
TacomaLeft Side Of Engine Compartment, In Relay Block No. 2
Application
(1) Apply Voltage To Terminals
No.(1)Continuity Between Terminals
No.

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Fig. 4: Taillight Control Relay Terminals (Land Cruiser & Sienna)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
Fig. 5: Taillight Control Relay Terminals (RAV4 & Tacoma)

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
HORN SWITCH
All Models1 & 23 & 5
(1)For relay terminal locations, see Fig. 4 or Fig. 5 .
NOTE: On RAV4 and Tundra, integration relay operates horn. Testing is not available.

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1. Disconnect combination switch connector. With horn pad pressed and held down (horn ON), check
continuity between appropriate wire terminal of combination switch connector. See Fig. 1
. See
appropriate wiring diagram in WIRING DIAGRAMS
.
2. If there is no continuity, repair wiring or replace components as necessary. Components include horn pad
and contact pin, slip ring and spiral cable. If there is continuity, check for open in horn circuit, faulty horn
or faulty horn relay. See HORN RELAY LOCATION
table.
HORN RELAY LOCATION (EXCEPT RAV4, TUNDRA & 4RUNNER)
IGNITION SWITCH
Disconnect ignition switch connector. With ignition switch in specified position, check continuity between
specified terminals of ignition switch connector. For switch terminal locations, see Fig. 6
. Also see IGNITION
SWITCH CONTINUITY TEST table. If continuity is not as specified, replace ignition switch.
IGNITION SWITCH CONTINUITY TEST 4Runner uses body ECU to control horn operation. See ANTI-THEFT SYSTEMS -
4RUNNER article.
ApplicationLocation
Land CruiserLeft Side Of Engine Compartment, In Junction Block
SiennaLeft Side Of Engine Compartment, In Junction Block No. 2
TacomaBehind Left Kick Panel, In Junction Block No. 1
Switch Position(1) Terminals No.Continuity
LOCKNoneNo
ACC2 & 3Yes
ON2, 3 & 4; 6 & 7Yes
START1, 2 & 4; 6, 7 & 8Yes
(1)For switch terminal locations, see Fig. 6 .

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Fig. 6: Identifying Ignition Switch Connector Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
KEY UNLOCK WARNING SWITCH
Disconnect key unlock switch 2-pin connector. Check continuity between both terminals of connector.
Continuity should be present with ignition switch in ON position. There should be no continuity with key
removed from lock cylinder. If continuity is not as specified, replace key unlock switch.
TURN SIGNAL SWITCH
Disconnect combination switch connector. With turn signal switch in specified position, check continuity
between specified terminals of combination switch connector. For switch terminal locations, see Fig. 1
. Also
see TURN SIGNAL SWITCH CONTINUITY TEST
table. If continuity is not as specified, replace turn
signal switch.
TURN SIGNAL SWITCH CONTINUITY TEST
Application & Switch Position(1) Terminals No.Continuity
Land Cruiser
Left7 & 8Yes
NeutralNoneNo
Right6 & 7Yes
RAV4, Sienna, Tacoma, Tundra & 4Runner
Left1 & 2Yes
NeutralNoneNo
Right2 & 3Yes

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TURN SIGNAL FLASHER
Except Land Cruiser & Tundra
Remove turn signal flasher. See TURN SIGNAL FLASHER LOCATION table. At turn signal flasher
terminals, connect positive battery lead to terminal No. 2. See Fig. 7
. Connect negative battery lead to terminal
No. 3. Connect 2 turn signal bulbs in parallel between terminal No. 1 and negative battery terminal. Replace
turn signal flasher if bulbs do not flash 60-120 times per minute.
TURN SIGNAL FLASHER LOCATION
Fig. 7: Testing Turn Signal Flasher (Except Land Cruiser & Tundra)

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
(1)For switch terminal locations, see Fig. 1 .
NOTE: Testing for Tundra is not available.
ApplicationLocation
Land CruiserBehind Dash Panel, Left Of Steering Column
RAV4Behind Left Kick Panel In Relay Block No. 5
Sienna, Tacoma, Tundra & 4RunnerDriver-Side Junction Block No. 1

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TURN SIGNAL FLASHER CIRCUIT
Land Cruiser & Tundra
Disconnect 8-pin connector from turn signal flasher. Using a DVOM, check continuity between terminal
specified and ground. See TURN SIGNAL FLASHER CIRCUIT TEST TABLE (LAND CRUISER &
TUNDRA) . If readings are as specified, replace relay. If circuits are not as specified, repair as necessary. See
EXTERIOR LIGHTS article.
TURN SIGNAL FLASHER CIRCUIT TEST (LAND CRUISER & TUNDRA)
Terminal No. (1) Switch PositionReading
2AllContinuity
3AllContinuity
5Right T/S Or OffNo Continuity
5Left T/SContinuity
6Left T/S Or OffNo Continuity
6Right T/SContinuity
7AllContinuity
8Hazard OFFNo Continuity
8Hazard ONContinuity
1Ignition Switch In LOCK/ACC PositionNo Voltage
1Ignition Switch In ON PositionBattery Voltage
4AllBattery Voltage
(1)See Fig. 8 .

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Fig. 8: Turn Signal Flasher Connector Terminals (Land Cruiser & Tundra)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
WIPER/WASHER SWITCH
REMOVAL & INSTALLATION
NOTE: See appropriate WIPER/WASHER SYSTEMS article.
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.
CAUTION: When battery is disconnected, vehicle computer and memory systems
may lose memory data. Driveability problems may exist until computer
systems have completed a relearn cycle. Before disconnecting battery,
see appropriate COMPUTER RELEARN PROCEDURES article in GENERAL
INFORMATION.

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COMBINATION SWITCH
Removal & Installation
Disconnect negative battery cable. Remove steering column covers (it may be necessary to first remove lower
finish panel from instrument panel). Disconnect headlight/dimmer and turn signal switch connector. Remove
screws and headlight/dimmer and turn signal switch. See Fig. 9
. To install, reverse removal procedure.
Fig. 9: Exploded View Of Combination Switch

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
IGNITION SWITCH
Removal & Installation
1. Disconnect negative battery cable. Remove upper and lower steering column covers (it may be necessary
to first remove lower instrument panel trim panel). Remove outer plastic trim cover from lock cylinder
assembly (if equipped).
2. Disconnect ignition switch electrical connector(s). Remove screw(s) retaining ignition switch to lock
c
ylinder. See Fig. 10 . Remove ignition switch from lock cylinder. To install, reverse removal procedure.

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Fig. 10: Exploded View Of Ignition Switch (Typical)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
STEERING WHEEL
Removal
1. Ensure front wheels are in straight-ahead position. Turn ignition switch to LOCK position. Remove key.
Disconnect negative battery cable. Wait 90 seconds before servicing steering wheel. Remove 2 screw
covers from outer sides of steering wheel. Using Torx Wrench (T30), loosen horn pad screws until screw
head is snug against screw case. See Fig. 11
.
2. Carefully pull steering wheel pad away from steering wheel enough to unlock and disconnect air bag
electrical connector. DO NOT pull on electrical connector or wiring. Store air bag pad aside with pad
facing upward.
3. Remove steerin
g wheel lock nut and washer from steering shaft. Make alignment mark on steering shaft

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