sensor TOYOTA RAV4 1996 Service Owner's Guide

3. With squib circuit connector disconnected, insert paper into female terminal, sliding it under shorting bar
spring. This lifts the spring, breaking the circuit and allowing the test procedure to be performed as
specified.
TESTING - DIAGNOSTIC
NO CODES - SOURCE VOLTAGE DROP
1. Disconnect negative battery cable. Wait at least 90 seconds. Remove steering wheel pad. See
STEERING WHEEL PAD & SPIRAL CABLE
under REMOVAL & INSTALLATION. Disconnect
passenger-side air bag harness connector, accessible through finish plate in glove box. See Fig. 2
.
Disconnect air bag sensor assembly connector.
2. Reconnect negative battery cable. Turn ignition switch to ON position. Measure voltage between ground
and terminals IG2 and ACC of air bag sensor connector. See Fig. 13
. Operate electrical components
(defogger, wiper, headlights, heater blower, etc.). If voltage is 8-14 volts, go to next step. If voltage is not
8-14 volts, check harness between battery and air bag sensor assembly and check battery and charging
system.
3. Turn ignition switch to LOCK position. Connect steering wheel pad connector. Connect passenger-side
air bag connector. Turn ignition switch to ON position. Operate electrical components as in step 2) and
check that SRS warning light goes off. If light does not go off, check diagnostic trouble code and go to
appropriate CODE under TESTING - DIAGNOSTIC. If a normal code is output, replace air bag sensor
assembly. If warning light goes off, no problem detected at this time.
CODE 11
1. Disconnect negative battery cable. Wait at least 90 seconds. Remove steering wheel pad. See
STEERING WHEEL PAD & SPIRAL CABLE
under REMOVAL & INSTALLATION. Disconnect
passenger-side air bag harness connector, accessible through finish plate in glove box. See Fig. 2
.
Disconnect air bag sensor assembly connector.
2. Measure resistance on spiral cable side of connector between spiral cable and steering wheel pad between
D+, D- and ground. If resistance is 1000 ohms or more, go to next step. If resistance is less than 1000
ohms, go to step 7).
3. Measure resistance on air ba
g sensor assembly side of connector between air bag sensor and passenger- WARNING:Paper must not be thicker than male terminal. If paper is thicker,
connector terminal may be damaged, possible resulting in system
fault.
NOTE: Use Diagnosis Check Wiring (09843-18020) when connecting jumper wire
between terminals of DLC. Spiral cable upper connector is same as steering
wheel pad (squib) connector. Spiral cable lower connector (located under
steering column) connects the harness between spiral cable and center air bag
sensor.
NOTE: During testing, if codes other than Code 11 are displayed, disregard them.

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side air bag assembly between P+, P- and ground. If resistance is 1000 ohms or more, go to next step. If
resistance is less than 1000 ohms, replace harness or connector between air bag sensor assembly and
passenger-side air bag assembly.
4. Connect connector to air bag sensor assembly. Use a jumper wire to connect D+ and D- on spiral cable
side of connector between spiral cable and steering wheel pad. Use a jumper to connect P+ and P- on air
bag sensor assembly side of connector between air bag sensor assembly and passenger-side air bag
assembly. Connect negative battery cable and wait 2 seconds. Turn ignition switch to ACC or ON
position and wait at least 20 seconds. Clear malfunction codes. Turn ignition switch to LOCK position.
Wait 20 seconds. Turn ignition switch to ACC or ON position and wait at least 20 seconds. Using
Diagnosis Wire (09843-18020), connect terminals Tc and E1 of DLC1. If DTC 11 is output, go to next
step. If DTC 11 is not output, Replace air bag sensor assembly.
5. Turn ignition switch to LOCK position. Disconnect negative battery cable. Wait 90 seconds. Connect
steering wheel pad connector. Connect negative battery cable. Wait 2 seconds. Turn ignition switch to
ACC or ON position. Wait 20 seconds. Clear malfunction codes. Turn ignition switch to LOCK position.
Wait at least 20 seconds. Turn ignition switch to ACC or ON position. Wait at least 20 seconds. Use
Diagnosis Wire (09843-18020), connect terminals Tc and E1 of DLC1. If DTC 11 is output, replace
steering wheel pad. If DTC 11 is output, go to next step.
6. Turn ignition switch to LOCK position. Disconnect negative battery cable. Wait at least 90 seconds.
Connect passenger-side air bag assembly connector. Connect negative battery cable. Wait at least 2
seconds. Turn ignition switch to ACC or ON position. Wait at least 20 seconds. Clear malfunction codes.
Turn ignition switch to LOCK position. Wait at least 20 seconds. Turn ignition switch to ACC or ON
position. Wait at least 20 seconds. Use Diagnosis Wire (09843-18020) to connect terminals Tc and E1 of
DLC1. If DTC 11 is output, replace passenger-side air bag assembly. If DTC 11 is not output, go to next
step.
7. Disconnect connector between air bag sensor assembly and spiral cable. Measure resistance between D+
on spiral cable side of connector between spiral cable and steering wheel pad and body ground. If
resistance is 1000 ohms or more, replace harness or connector between air bag sensor assembly and spiral
cable. If resistance is less than 1000 ohms, replace spiral cable.
CODE 12
1. Disconnect negative battery cable. Wait at least 90 seconds. Remove steering wheel pad. See
STEERING WHEEL PAD & SPIRAL CABLE
under REMOVAL & INSTALLATION. Disconnect
passenger-side air bag connector, accessible through finish plate inside glove box. See Fig. 2
. Disconnect
air bag sensor assembly connector
2. Check voltage between ground, D+ and D- of connector (spiral cable side) between spiral cable and
steering wheel pad. If voltage is zero volts, go to next step. If voltage is not zero volts, go to step 7).
3. Check voltage between P+, P- and ground of connector (air bag sensor assembly side) between air bag
sensor assembly and passenger-side air bag assembly. If voltage is zero volts, go to next step. If voltage is
not zero volts, replace harness or connector between air bag sensor assembly and passenger-side air bag
assembly.
4. Connect connector to air bag sensor assembly. Use jumper wire to connect D+ and D- on spiral cable side
of connector between spiral cable and steering wheel pad. Use a jumper wire to connect P+ and P- on air NOTE: During testing, if codes other than Code 12 are displayed, disregard them.

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AIR BAG RESTRAINT SYSTEM 1996 ACCESSORIES/SAFETY EQUIPMENT Toyota Air Bag Restraint System
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bag sensor assembly side of connector between airbag sensor assembly and passenger-side air bag
assembly. Connect negative battery cable. Wait 2 seconds. Turn ignition switch to ACC or ON position.
Wait at least 20 seconds. Clear malfunction codes. Turn ignition switch to LOCK position. Wait at least
20 seconds. Turn ignition switch to ACC or ON position. Wait at least 20 seconds. Using Diagnosis Wire
(09843-18020) connect terminals Tc and E1 of DLC1. If DTC 12 is output, replace air bag sensor
assembly. If DTC 12 is output, go to next step.
5. Turn ignition switch to LOCK position. Disconnect negative battery cable. Wait 90 seconds. Connect
steering wheel pad connector. Connect negative battery cable. Wait 2 seconds. Turn ignition to ACC or
On. Wait at least 20 seconds. Clear malfunction codes. Turn ignition switch to LOCK position. Wait at
least 20 seconds. Turn ignition to ACC or On. Wait at least 20 seconds. Using Diagnosis Wire (09843-
18020) connect terminals Tc and E1 of DLC1. If DTC 12 is output, replace passenger-side air bag. If
DTC 12 is not output, go to next step.
6. Turn ignition switch to LOCK position. Disconnect connector between air bag sensor assembly and spiral
cable. Turn ignition ON. Measure voltage between D+ terminal on spiral cable side of connector between
spiral cable and steering wheel pad. If voltage is zero volts, replace harness or connector between air bag
sensor assembly and spiral cable. If voltage is not zero volts, replace spiral cable.
CODE 14
1. Disconnect negative battery cable. Wait at least 90 seconds. Remove steering wheel pad. See
STEERING WHEEL PAD & SPIRAL CABLE
under REMOVAL & INSTALLATION. Disconnect
passenger-side air bag connector, accessible through finish plate inside glove box. See Fig. 2
. Disconnect
air bag sensor assembly connector.
2. Use a jumper wire to connect D+ and D- on air bag sensor assembly connector. Measure resistance
between D+ and D-. If resistance is less than one ohm, go to next step. If resistance is more than one ohm,
go to step 5).
3. Connect connector to air bag sensor assembly. Using a jumper wire, connect D+ and D- on spiral cable
side of connector between spiral cable and steering wheel pad. Connect negative battery cable. Wait 2
seconds. Turn ignition switch to ACC or ON position. Wait at least 20 seconds. Clear malfunction codes.
Turn ignition switch to LOCK position. Wait at least 20 seconds. Using Diagnosis Wire (09843-18020),
connect terminals Tc and E1 of DLC1. If DTC 14 is output, replace air bag sensor assembly. If DTC 14 is
not output, go to next step.
4. Turn ignition switch to LOCK position. Disconnect negative battery cable. Wait at least 90 seconds.
Connect steering wheel pad (squib) connector. Connect negative battery cable. Wait 2 seconds. Turn
ignition switch to ACC or ON position. Wait at least 20 seconds. Clear malfunction codes. Turn ignition
switch to LOCK position. Wait at least 20 seconds. Turn ignition switch to ACC or ON position. Wait at
least 20 seconds. Using Diagnosis Wire (09843-18020), connect terminals Tc and E1 of DLC1. If DTC
14 is output, replace steering wheel pad. If DTC 14 is not output, no problem is detected at this time..
5. Disconnect connector between air bag sensor assembly and spiral cable. Measure resistance between
terminals D+ and D- on spiral cable side of connector between spiral cable and steering wheel pad. If
resistance is less than one ohm, go to next step. If resistance is more than one ohm, replace spiral cable.
6. Use a jumper wire to connect D+ and D- on air bag sensor assembly connector. Measure resistance
between D+ and D- on air bag side of connector between air bag sensor assembly and spiral cable. If NOTE: During testing, if codes other than Code 14 are displayed, disregard them.

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AIR BAG RESTRAINT SYSTEM 1996 ACCESSORIES/SAFETY EQUIPMENT Toyota Air Bag Restraint System
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resistance is less than one ohm, no problem detected at this time. If resistance is more than one ohm,
replace harness or connector between air bag sensor and spiral cable.
CODE 31
1. Disconnect negative battery cable. Wait at least 90 seconds. Remove steering wheel pad. See
STEERING WHEEL PAD & SPIRAL CABLE
under REMOVAL & INSTALLATION. Disconnect
passenger-side air bag connector, accessible through finish plate inside glove box. See Fig. 2
. Disconnect
air bag sensor assembly connector.
2. Turn ignition switch to ON position. Measure voltage between terminals IG2 and ACC of air bag sensor
assembly and ground. If voltage is less than 16 Volts, go to next step. If voltage is more than 16 volts,
check battery and charging system.
3. Clear malfunction code. Turn ignition switch to LOCK position. Wait at least 20 seconds. Turn ignition
switch to ACC or ON position. Wait at least 20 seconds. Repeat these steps at least 5 times. Using
Diagnosis Wire (09843-18020), connect terminals Tc and E1 of DLC1. Check DTC. If CODE 31 is
output, replace air bag sensor assembly. If CODE 31 is not output, check for intermittent fault. See AIR
BAG WARNING LIGHT INTERMITTENT under DIAGNOSIS.
CODE 54
1. Disconnect negative battery cable. Wait at least 90 seconds. Remove steering wheel pad. See
STEERING WHEEL PAD & SPIRAL CABLE
under REMOVAL & INSTALLATION. Disconnect
passenger-side air bag connector, accessible through finish plate inside glove box. See Fig. 2
. Disconnect
air bag sensor assembly connector.
2. Using a jumper wire, connect P+ and P- of air bag sensor connector. Measure resistance between
terminals of passenger-side air bag connector. If resistance is less than one ohm, go to next step. If
resistance is more than one ohm, replace harness or connector between air bag sensor assembly and
passenger-side air bag assembly.
3. Connect connector to center air bag sensor assembly. Using a jumper wire, connect P+ and P- terminals
(on center air bag sensor assembly side of connector between center air bag sensor assembly) and
passenger-side air bag assembly. Connect negative battery cable and wait 20 seconds. Turn ignition
switch to ACC or ON position. Wait at least 20 seconds. Clear malfunction codes. Turn ignition switch to
LOCK position. Wait at least 20 seconds. Turn ignition switch to ACC or ON position. Wait for at least
20 seconds. Using Diagnosis Wire (09843-18020), check for DTC 54. If DTC 54 is output, replace air
bag sensor assembly. If DTC 54 is not output, go to next step.
4. Turn ignition switch to LOCK position. Disconnect negative battery cable. Wait at least 90 seconds.
Connect passenger-side air bag assembly connector. Connect negative battery cable. Wait 2 seconds.
Turn ignition switch to ACC or ON position. Wait at least 20 seconds. Clear malfunction codes. Turn
ignition switch to LOCK position. Wait at least 20 seconds. Turn ignition switch to ACC or ON position.
Wait at least 20 seconds. Using Diagnosis Wire (09843-18020), check for DTC 54. If DTC 54 is output,
replace passen
ger-side air bag assembly. If DTC 54 is not output, the malfunction is now normal. NOTE: During testing, if codes other than Code 14 are displayed, disregard them.
NOTE: During testing, if codes other than Code 54 are displayed, disregard them.

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AIR BAG RESTRAINT SYSTEM 1996 ACCESSORIES/SAFETY EQUIPMENT Toyota Air Bag Restraint System
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AIR BAG SENSOR CONNECTOR TERMINAL IDENTIFICATION
POST-COLLISION AIR BAG SAFETY INSPECTION
POST-COLLISION AIR BAG SAFETY INSPECTION
WIRE REPAIR
TORQUE SPECIFICATIONS
TORQUE SPECIFICATIONS
TerminalCircuit
"A" (L1)Shorting Bar
"B" (L2)Shorting Bar
1 (P-)Squib "-" Passenger-Side
2 (P+)Squib "+" Passenger-Side
3 (D+)Squib "+" Driver-Side
4 (D-)Squib "-" Driver-Side
5 (E1)Ground
6 (E2)Ground
7 (Tc)Diagnosis
8 (LA)Air Bag Warning Light
9 (IG2)Power Source (IGN Fuse)
10 (ACC)Power Source (CIG Fuse)
ActionComponents
Replace After DeploymentAir Bag Module(s), Air Bag Sensor Assembly
Inspect & If Damaged, Replace Component (Even
If Air Bag Did Not Deploy)Glove Compartment Door, Instrument Panel,
Instrument Panel Reinforcement, Spiral Cable
Steering Wheel, Wiring Harness & Connectors
CommentsIf any components are damaged or bent, they must
be replaced.
WARNING:No part of the SRS system or harnesses can be repaired. If wiring harness
is damaged, replace complete wiring harness assembly.
ApplicationFt. Lbs. (N.m)
Air Bag Sensor Screw15 (21)
Instrument Panel Reinforcement14 (19)
Passenger-Side Air Bag Bolt15 (21)
Steering Wheel Nut26 (35)
INCH Lbs. (N.m)
Steering Wheel Pad Torx Screw80 (9)

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AIR BAG RESTRAINT SYSTEM
1999 Toyota
DESCRIPTION & OPERATION
Supplemental Restraint System (SRS), also known as air bag system, is designed to provide increased accident
protection for driver and passenger by deploying air bags in a front-end collision. The air bag system is
designed to be used in conjunction with 3-point safety belts.
The air bag system includes the following components: driver-side air bag module (steering wheel pad),
passenger-side air bag module, spiral cable, AIR BAG warning light, air bag sensor assembly, right and left
front air bag sensors, right and left front seat belt pretensioners and associated wiring harnesses. See Fig. 1
. WARNING:To avoid injury from accidental air bag deployment, read and carefully
follow all WARNINGS and SERVICE PRECAUTIONS
.

1999 Toyota RAV4
AIR BAG RESTRAINT SYSTEM 1999 Toyota

1999 Toyota RAV4
AIR BAG RESTRAINT SYSTEM 1999 Toyota
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Fig. 1: Locating Restraint System Components
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
AIR BAG SENSOR ASSEMBLY
The air bag sensor assembly is located on the floor inside center console box. It consists of an air bag sensor,
safing sensor and diagnosis, ignition control and drive circuits. It receives signals from the air bag sensor and
determines whether air bag system must be deployed or not.
DRIVER-SIDE AIR BAG MODULE
The driver-side air bag and inflator is stored in the steering wheel pad. It contains a squib, igniter charge and gas
generant and inflates the air bag when instructed by air bag sensor assembly. Driver-side air bag module is also
called steering wheel pad.
FRONT AIR BAG SENSOR
The front air bag sensors are mounted inside right and left front side members. When sensor detects an impact
of sufficient force (above a predetermined limit), contacts inside the sensor close, sending a signal to the air bag
sensor assembly.
PASSENGER-SIDE AIR BAG MODULE
The passenger-side air bag and inflator is stored in the instrument panel above glove box. It contains a squib,
igniter charge and gas generant and inflates the air bag when instructed by air bag sensor assembly.
SEAT BELT PRETENSIONER
The seat belt pretensioner system is a component of the front outer seat belt assembly. It contains a squib, gas
generant, wire and piston and operates in the event of a front-end collision.
SPIRAL CABLE
The spiral cable is attached to combination switch and is used as an electrical joint between chassis wiring
harness and driver-side air bag module. Spiral cable is also known as clockspring.
SERVICE PRECAUTIONS
Observe the following precautions when servicing air bag system:
Disable air bag system before servicing any air bag system or steering column component. Failure to do
this could result in accidental air bag deployment and possible personal injury. See DISABLING &
ACTIVATING AIR BAG SYSTEM .
When diagnosing air bag system, always check for diagnostic codes before disconnecting battery.
After turning ignition switch to LOCK position and disconnecting negative battery cable, wait at least 90
seconds before workin
g on air bag system. Air bag system is equipped with a back-up power source that

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may allow air bag to deploy until 90 seconds after disconnecting negative battery cable.
If vehicle was in a minor collision but air bags did not deploy, inspect all system components for any sign
of damage, and replace as necessary.
Never use air bag system components from another vehicle. Replace air bag system components with new
parts.
Remove air bag sensor assembly if repairing the vehicle requires impacting (shocking) the vehicle.
Air bag sensor assembly contains mercury. After replacement, DO NOT destroy old part. When
scrapping vehicle or replacing air bag sensor assembly, remove air bag sensor assembly and dispose of it
as toxic waste.
Never disassemble and repair air bag sensor assembly, front air bag sensors, passenger-side or driver-side
air bag modules or seat belt pretensioners.
Replace dropped, cracked, dented or otherwise damaged components.
DO NOT expose air bag sensor assembly, front air bag sensors or air bag modules directly to heat or
flame.
When diagnosing electrical circuits, use a volt/ohm meter with high impedance (10,000 ohms minimum).
Information labels are attached to air bag components. Follow all notices on labels.
After work on air bag system is complete, check AIR BAG warning light to ensure system is functioning
properly. See SYSTEM OPERATION CHECK
.
Always wear safety glasses when servicing or handling an air bag.
When placing a live air bag on a bench or other surface, always face air bag and trim cover up and away
from surface. This will reduce motion of module if it is accidentally deployed.
After deployment, air bag surface may contain deposits of sodium hydroxide, which irritates skin. Always
wear safety glasses, rubber gloves, and long-sleeved shirt during clean-up. After clean-up, wash hands
using mild soap and water.
Carry a live air bag module with trim cover (air bag) pointed away from your body to minimize injury in
case accidental deployment.
If air bag system is not fully functional for any reason, vehicle should not be driven until system is
repaired and again becomes operational. DO NOT remove bulbs, modules, sensors or other components,
or in any way disable system from operating normally. If air bag system is not functional, park vehicle
until it is repaired and functions properly.
ADJUSTMENTS
SPIRAL CABLE
Ensure front wheels are in straight-ahead position. Turn spiral cable counterclockwise until it becomes difficult
to turn. Turn spiral cable clockwise about 2 1/2 turns to align match marks. See Fig. 2
. Install steering wheel.

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AIR BAG RESTRAINT SYSTEM 1999 Toyota
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For Diagnosis & Testing
1. Turn ignition switch to LOCK position. Disconnect and shield negative battery cable. Wait at least 90
seconds. Remove driver-side air bag module. See DRIVER-SIDE AIR BAG MODULE under
REMOVAL & INSTALLATION
. Disconnect passenger-side air bag module connector, accessible by
removal of glove box assembly. See Fig. 3
.
2. Disconnect air bag sensor assembly connectors. See Fig. 4
. See AIR BAG SENSOR ASSEMBLY under
REMOVAL & INSTALLATION
. Disconnect right and left front seat belt pretensioners. See SEAT
BELT PRETENSIONER under REMOVAL & INSTALLATION
. Disconnect right and left front air
bag sensors. See FRONT AIR BAG SENSOR under REMOVAL & INSTALLATION
.
Fig. 3: Disconnecting Passenger
-Side Air Bag Connector
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

1999 Toyota RAV4
AIR BAG RESTRAINT SYSTEM 1999 Toyota
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Fig. 4: Disabling Air Bag System
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
ACTIVATING SYSTEM
For Component Replacement
Ensure ignition switch is in LOCK position. Reconnect negative battery cable. Perform SYSTEM
OPERATION CHECK .
For Diagnosis & Testing
Turn ignition switch to LOCK position. Disconnect and shield negative battery cable. Wait at least 90 seconds.
Reconnect right and left front air bag sensor connectors. Reconnect right and left seat belt pretensioners.
Reconnect passenger-side air bag connector. Install driver-side air bag module. Reconnect air bag sensor
assembl
y connector. Reconnect negative battery cable. Perform SYSTEM OPERATION CHECK.

1999 Toyota RAV4
AIR BAG RESTRAINT SYSTEM 1999 Toyota
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