warning light TOYOTA RAV4 1996 Service User Guide

1. Before proceeding, see SERVICE PRECAUTIONS . Disable SRS. See DISABLING &
ACTIVATING AIR BAG SYSTEM .
2. Air bag sensor is located forward of center console. See Fig. 1
. Remove upper console panel, rear
console box, console panel garnish, ash receptacle box, heater control panel, and center cluster finish
panel. See Fig. 8
. Disconnect the connector with air bag sensor installed. Remove 3 Torx screws and air
bag sensor assembly.
Fig. 8: Removing Air Bag Sensor

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
Installation
To install, reverse removal procedure. Tighten 3 air bag sensor screws to specification. See TORQUE
SPECIFICATIONS . Connect air bag sensor connector after the sensor is installed. Activate SRS. See
DISABLING & ACTIVATING AIR BAG SYSTEM
. Check air bag warning light to ensure system is
functioning properly. See SYSTEM OPERATION CHECK
.
STEERING WHEEL PAD & SPIRAL CABLE

1996 Toyota 4Runner
AIR BAG RESTRAINT SYSTEM 1996 ACCESSORIES/SAFETY EQUIPMENT Toyota Air Bag Restraint System
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Installation
To install, reverse removal procedure. Ensure spiral cable is properly aligned. See SPIRAL CABLE under
ADJUSTMENTS. Connect air bag connector. Tighten 2 Torx screws to specification. See TORQUE
SPECIFICATIONS . Install steering wheel side covers. Perform SYSTEM OPERATION CHECK .
PASSENGER-SIDE AIR BAG
Removal & Installation
1. Before proceeding, follow air bag service precautions. See SERVICE PRECAUTIONS . Turn ignition
switch to LOCK position. Disconnect and shield negative battery cable. Wait at least 90 seconds before
working on system.
2. Disable SRS. See DISABLING & ACTIVATING AIR BAG SYSTEM
. Remove instrument panel.
Remove the 2 bolts securing passenger-side air bag. See Fig. 10
. Remove air bag. Remove 3 bolts and
pry up the 5 air bag door clips and remove the air bag door. See Fig. 11
.
3. To install, reverse removal procedure. Tighten passenger-side air bag bolts to specification. See
TORQUE SPECIFICATIONS
. Activate SRS. See DISABLING & ACTIVATING AIR BAG
SYSTEM . Check air bag warning light to ensure system is functioning properly. See SYSTEM
OPERATION CHECK . WARNING:During installation, if spiral cable mating mark is not properly aligned,
steering wheel may not turn completely, or flat cable inside spiral cable
may be severed, disabling SRS system.

1996 Toyota 4Runner
AIR BAG RESTRAINT SYSTEM 1996 ACCESSORIES/SAFETY EQUIPMENT Toyota Air Bag Restraint System
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Fig. 11: Removing Passenger-Side Air Bag Door
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
SELF-DIAGNOSTIC
AIR BAG WARNING LIGHT CHECK
Turn ignition switch to ACC or ON position. If air bag warning light comes on then goes out after about 6
seconds, the system is okay at this time. If air bag warning light comes on and stays on (or flashes), diagnostic
code is stored in the air bag sensor. Go to RETRIEVING CODES
. If air bag warning light responds in any
other way, go to DIAGNOSIS
.
RETRIEVING CODES
1. Turn ignition switch to ACC or ON position. Wait about 20 seconds. Using Diagnosis Check Wire
(09843-18020), jump terminals Tc and E1 of Data Link Connector (DLC), located under left side of
instrument panel, next to junction block. See Fig. 12
.
CAUTION: If jumper wire is incorrectly connected across terminals of Data Link
Connector (DLC), system may be damaged. Use Diagnosis Check Wire
(09843-18020) when connecting terminals of DLC

1996 Toyota 4Runner
AIR BAG RESTRAINT SYSTEM 1996 ACCESSORIES/SAFETY EQUIPMENT Toyota Air Bag Restraint System
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Fig. 12: Identifying Data Link Connector (DLC) Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
2. If air bag warning light does not flash codes, go to CODE(S) NOT DISPLAYED
under DIAGNOSIS. If
air bag warning light flashes continuously at a rate of 2 times per second, source voltage is low. Go to NO
CODES - SOURCE VOLTAGE DROP under appropriate TESTING - DIAGNOSTIC.
3. If air bag warning light flashes codes, count number of flashes to determine code(s) that are set. For
example, Code 12 is: FLASH, pause, FLASH, FLASH. If more than one code is present, a 2.5-second
pause will occur between each code. Lowest numbered codes will be displayed followed by higher
numbered codes. See SRS CODES
.
4. After all codes are displayed, a 4-second pause will occur and codes will be repeated. After code(s) have
been identified, see appropriate CODE under TESTING
- DIAGNOSTICand perform tests as specified.
After repairing system, clear codes. See CLEARING CODES
.
SRS CODES
NOTE: If a code that is not listed in SRS CODES table is displayed, replace air bag
sensor. If air bag warning light does not function as described, go to CODE(S)
NOT DISPLAYED or see CODE(S) CONTINUOUSLY DISPLAYED .
CodePossible Cause
Light Is OffSystem Okay

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CLEARING CODES
1. At DLC, connect a jumper wire to terminal Tc, and another jumper wire to terminal AB. See Fig. 12
.
Turn ignition switch to ACC or ON position. Wait about 6 seconds.
2. Starting with terminal Tc, apply body ground alternately to terminal Tc and terminal AB twice each, in
cycles of 1/2 to 1 1/2 seconds. Finally, keep applying body ground to terminal Tc until air bag warning
light flashes quickly, indicating codes are cleared.
DIAGNOSIS
AIR BAG WARNING LIGHT DOES NOT COME ON AT ALL
11Short To Ground In Squib Circuit
12Short To Battery In Squib Circuit
14Open In D Squib Circuit
31Air Bag Sensor Assembly Malfunction
54Open In P Squib Circuit
NOTE: When alternately connecting jumper probes to terminals, simultaneously
release one probe from one terminal while connecting other probe to other
terminal. If time interval between probings is too long, codes will not clear.
WARNING:Failure to follow air bag service precautions may result in air bag
deployment and personal injury. See SERVICE PRECAUTIONS
. After
component replacement, perform system operational check to ensure
proper system operation. See SYSTEM OPERATION CHECK
.
CAUTION: Ensure ignition switch is in LOCK position before disconnecting or
connecting negative battery cable. If ignition switch is in ACC or ON
position when negative battery cable is disconnected or connected, center
air bag sensor may be damaged.
NOTE: For air bag sensor connector terminal identification, see Fig. 13
.

1996 Toyota 4Runner
AIR BAG RESTRAINT SYSTEM 1996 ACCESSORIES/SAFETY EQUIPMENT Toyota Air Bag Restraint System
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Fig. 13: Identifying Air Bag Sensor Connector Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
1. Remove SRS fuse. Check fuse for continuity. If fuse is okay go to next step. If fuse is not okay, replace
fuse and go to step 5).
2. 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. See Fig. 2
.
3. Connect negative battery cable. Turn ignition to ACC or ON. Measure voltage from ground to terminal
LA of harness side connector of air bag sensor assembly. If battery voltage is present, go to next step. If
battery voltage is not present, check warning light bulb or repair SRS warning light circuit.
4. Disconnect negative battery cable. Reconnect air bag sensor connector. Reconnect negative battery cable.
Wait 2 seconds. Turn i
gnition switch to ACC or ON position. Check operation of SRS warning light. If

1996 Toyota 4Runner
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light is okay, the malfunction is now corrected. If light is not okay, check terminal LA of air bag sensor
assembly. If terminal is okay, replace air bag sensor assembly.
5. If new fuse burns out again, check harness between SRS fuse and SRS warning light. If fuse is not burned
out check for intermittent fault. See AIR BAG WARNING LIGHT INTERMITTENT
under
DIAGNOSIS.
AIR BAG WARNING LIGHT STAYS ON WITH IGNITION OFF
Disable SRS. See DISABLING & ACTIVATING AIR BAG SYSTEM
. Disconnect air bag sensor connector
(s). Reconnect negative battery cable. If air bag warning light is off, replace air bag sensor. If air bag warning
light is still on, repair warning light circuit or AB circuit leading to DLC. See Fig. 12
.
AIR BAG WARNING LIGHT INTERMITTENT
If air bag warning light comes on intermittently, perform the following tests to simulate driving conditions:
Wiggle-test wiring harness.
Using a hair dryer, apply heat to components.
Spray water onto entire vehicle (not directly onto electrical components) to simulate humidity.
If problem cannot be found, replace all components including wiring harness.
CODE(S) NOT DISPLAYED
1. Turn ignition switch from LOCK to ACC or ON position. If air bag warning light does not come on,
repair air bag warning light circuit. If air bag warning light comes on, go to next step.
2. Turn ignition to ACC or ON. Measure voltage between terminals Tc and E1 of DLC. See Fig. 12
. If
battery voltage is present, go to step 4). If battery voltage is not present go to next step.
3. Measure voltage between body ground and terminal Tc of DLC. If battery voltage is present, repair
harness between body ground and terminal E1 of DLC. If battery voltage is not present, go to next step.
4. Turn ignition to LOCK. Disconnect negative battery cable. wait at least 90 seconds. Disconnect air bag
sensor assembly connector. Connect a jumper wire between body ground and terminal Tc from back side.
See Fig. 13
. If air bag warning light does not come on, replace air bag sensor. If air bag warning light
comes on, check wiring harness between air bag sensor and DLC.
CODE(S) CONTINUOUSLY DISPLAYED
Disable SRS. See DISABLING & ACTIVATING AIR BAG SYSTEM
. Disconnect air bag sensor connector
NOTE: Use the following procedure if code(s) are not displayed or air bag warning light
stays on when jumper wire is connected between terminals Tc and E1 of DLC
connector.
NOTE: Use the following procedure if code(s) are displayed without connecting jumper
wire between terminals Tc and E1 of DLC connector.

1996 Toyota 4Runner
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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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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)

1996 Toyota 4Runner
AIR BAG RESTRAINT SYSTEM 1996 ACCESSORIES/SAFETY EQUIPMENT Toyota Air Bag Restraint System
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