horn TOYOTA RAV4 1996 Service Repair Manual

Fig. 10: Removing Air Bag Sensor Assembly
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
DRIVER-SIDE AIR BAG MODULE
Removal & Installation
1. Before proceeding, see SERVICE PRECAUTIONS . Ensure front wheels are in straight-ahead position.
Turn ignition switch to LOCK position. Disconnect negative battery cable. Wait at least 90 seconds.
Working from back of steering wheel, loosen air bag module mounting Torx screws until groove around
screw circumference catches on screw case. See Fig. 11
.
2. Pull drive
r-side air bag module from steering wheel and disconnect driver-side air bag module connector.
NOTE: If steering wheel horn button contact plate is deformed, replace steering wheel
assembly.

1999 Toyota RAV4
AIR BAG RESTRAINT SYSTEM 1999 Toyota
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If battery is replaced, it should be of the same group number as shown on original battery label.
CAUTIONS & WARNINGS
SUPPLEMENTAL RESTRAINT SYSTEM (AIR BAG)
Modifications or improper maintenance, including incorrect removal and installation of the Supplemental
Restraint System (SRS), can adversely affect system performance. DO NOT cover, obstruct or change the
steering wheel horn pad in any way, as such action could cause improper function of the system. Use only plain
water when cleaning the horn pad. Solvents or cleaners could adversely affect the air bag cover and cause
improper deployment of the system.
AIR CONDITIONING SERVICING
ANTI-LOCK BRAKE SYSTEM CAUTION: When battery is disconnected, vehicles equipped with computers may lose
memory data. When battery power is restored, driveability problems may
exist on some vehicles. These vehicles may require a relearn procedure.
See COMPUTER RELEARN PROCEDURES article in the GENERAL
INFORMATION section.
WARNING:To avoid injury from accidental air bag deployment, read and carefully
follow all warnings and service precautions. See appropriate AIR BAG
RESTRAINT SYSTEM article in ACCESSORIES/SAFETY EQUIPMENT.
CAUTION: Disconnect negative battery cable before servicing any air bag system,
steering column or passenger side dash component. After any repair, turn
ignition key to the ON position from passenger's side of vehicle in case of
accidental air bag inflation
NOTE: See the AIR BAG RESTRAINT SYSTEM article in the ACCESSORIES/SAFETY
EQUIPMENT Section.
CAUTION: Avoid breathing R-134a refrigerant and PAG lubricant vapors, exposure
may irritate eyes, nose and throat. To remove R-134a from system use R-
134a recycling equipment that meets SAE J2210 specifications. If
accidental system discharge occurs, ventilate work area before resuming
service.
WARNING:R-134a service equipment or vehicle A/C systems SHOULD NOT be
pressure tested or leak tested with compressed air. Some mixtures of
air/R134a have shown to be combustible at elevated pressures. These
mixtures are dangerous and may cause fire and/or explosions. See AIR
CONDITIONING SERVICE article in GENERAL INFORMATION section.

1999 Toyota RAV4
MAINTENANCE INFORMATION 1997-99 MAINTENANCE Toyota Maintenance Information
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System
2 - DOME 15 Amp Personal Lights, Open Door Warning Light, Clock
3 - EFI 15 Amp Multiport Fuel Injection System/Sequential Multiport Fuel Injection System
4 - HAZ-HORN 15 Amp Emergency Flashers, Horns
5 - ALT-S 5 Amp Charging system
6 - SPARE 15 Amp Spare fuse
7 - SPARE 7.5 Amp Spare fues
8 - H-LP (LH) 15 Amp Left-Hand Headlight
9 - H-LP (RH) 15 Amp Right-Hand Headlight
10 - DRL 7.5 Amp Daytime Running Light System
11 - H-LP LH-L 10 Amp Left Hand Headlight (Low Beam)
12 - H-LP RH-L 10 Amp Right Hand Headlight (Low Beam)
13 - H-LP LH-H 10 Amp Left Hand Headlight (High Beam)
14 - H-LP RH-H 10 Amp Right Hand Headlight (High Beam)
15 - TAIL 10 Amp Tail Lights, Parking Lights, License Plate Lights, Interior Lights
16 - GAUGE 10 Amp Gauges And Meters, Service Reminder Indicators (Except Discharge And Open
Door Warning Lights), Back-up Lights, Air Conditioning System, Power Windows, Rear Window
Defogger, Center Differential Lock System, Electronically Controlled Automatic Transaxle System
17 - TURN 7.5 Amp Turn Signal Lights
18 - CIG & RAD 15 Amp Cigarette Lighter, Clock, Car Audio System, Power Rear View Mirrors
19 - DEF-I/UP 7.5 Amp Multiport Fuel Injection System/Sequential Multiport Fuel Injection System
20 - IGN 7.5 Amp Multiport Fuel Injection System/Sequential Multiport Fuel Injection System,
Discharge Warning Light
21 - ECU-IG 7.5 Amp Anti-Lock Brake Syste, Electronically Controlled Automatic Transmission
System
22 - WIPER 20 Amp Windshield Wipers And Washer, Rear Window Wiper And Washer
23 - SRS 7.5 Amp SRS Airbag System
24 - OBD 7.5 Amp On-Board Diagnostic System
25 - STOP 10 Amp Stop Lights
26 - A/C 7.5 Amp Air Conditioning System
27 - MAIN No. 1 30 Amp Starting System, Headlights
28 - RDI FAN 30 Amp Electric Cooling Fan
29 - CDS FAN 30 Amp Electric Cooling Fan
30 - POWER 30 Amp Power Windows, Power Door Lock System
31 - DEF 30 Amp Rear Window Defogger
32 - AM 1 40 Amp CIG & RAD, WIPER, GAUGE, ECU-IG, TURN, TAIL, and PANEL fuses
33 - MAIN 80 Amp AM 2, HAZ-HORN, EFI, DOME, RADIO and ALT-S fuses
34 - ALT 100 Amp Tail lights, ABS, RADIO, HTR, AM 1, POWER, STOP and DEF fuses

1999 Toyota RAV4
MAINTENANCE INFORMATION 1997-99 MAINTENANCE Toyota Maintenance Information
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26 - HORN 10 Amp Horn
27 - DEFOG 20 Amp Rear Window Defogger
28 - DEF 30 Amp Rear Window Defogger
29 - A/C 10 Amp Air Conditioning System
30 - MAIN No. 1 40 Amp Starting System, H-LP (RH), H-LP (LH), H-LP RH-H, H-LP LH-H, H-LP
RH-L, H-LP LH-L Fuses
31 - CDS FAN 30 Amp Electric Cooling Fans
32 - RDI FAN 30 Amp Electric Cooling Fans
33 - PWR 30 Amp Power Door Lock System, Electric Moon Roof, Power Windows
34 - ABS 50 Amp Anti-Lock Brake System
35 - MAIN 80 Amp IGN, HAZ, DOME, ALT-S, MAIN No.1, AM2, & EFI Fuses
36 - ALT 100 Amp HTR, ABS, RDI FAN, CDS FAN, CIG, SRS-ACC, WIPER, ECU-IG, TURN &
GAUGE, DEFOG, TAIL, STOP, HORN, OBD, SRS-B, PWR OUTLET, PWR, & AM1 Fuses
37 - HTR 50 Amp Air Conditioning System, A/C Fuse

1999 Toyota RAV4
MAINTENANCE INFORMATION 1997-99 MAINTENANCE Toyota Maintenance Information
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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.

1999 Toyota RAV4
1999 ACCESSORIES & EQUIPMENT Steering Column Switches - Trucks
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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 .

1999 Toyota RAV4
1999 ACCESSORIES & EQUIPMENT Steering Column Switches - Trucks
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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

1999 Toyota RAV4
1999 ACCESSORIES & EQUIPMENT Steering Column Switches - Trucks
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Fig. 12: Horn System Wiring Diagram (Land Cruiser)

1999 Toyota RAV4
1999 ACCESSORIES & EQUIPMENT Steering Column Switches - Trucks
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Fig. 13: Horn System Wiring Diagram (RAV4)

1999 Toyota RAV4
1999 ACCESSORIES & EQUIPMENT Steering Column Switches - Trucks
Microsoft
Sunday, November 22, 2009 10:56:55 AMPage 18 © 2005 Mitchell Repair Information Company, LLC.

Fig. 14: Horn System Wiring Diagram (Sienna)

1999 Toyota RAV4
1999 ACCESSORIES & EQUIPMENT Steering Column Switches - Trucks
Microsoft
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