sensor TOYOTA RAV4 1996 Service Owner's Manual

disable system from operating normally. If SRS is not functional, park vehicle until it is repaired and
functions properly.
DISABLING & ACTIVATING AIR BAG SYSTEM
DISABLING SYSTEM
Turn ignition switch to LOCK position. Disconnect and shield negative battery cable. Wait at least 90 seconds
before working on system. On the passenger side, remove glove box door. Disconnect passenger-side air bag
connector. See Fig. 2
. Remove steering column lower cover. Disconnect driver-side air bag connector-to-spiral
cable connector. See Fig. 3
. Disconnect connector of air bag sensor assembly, located forward of center
console. NOTE: If diagnosing SRS, check for diagnostic codes before disconnecting negative
battery cable.
WARNING:Back-up power supply maintains SRS voltage for about 90 seconds after
battery is disconnected. After disabling SRS, wait at least 90 seconds
before servicing SRS. Servicing SRS before 90 seconds may cause
accidental air bag deployment and possible personal injury.

1996 Toyota 4Runner
AIR BAG RESTRAINT SYSTEM 1996 ACCESSORIES/SAFETY EQUIPMENT Toyota Air Bag Restraint System
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Fig. 2: Disconnecting Passenger-Side Air Bag Connector
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
Fig. 3: Disconnecting Driver
-Side Air Bag Connector
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
ACTIVATING SYSTEM
Reconnect air bag sensor assembly connector. Reconnect passenger-side air bag connector and driver-side air
bag-to-spiral cable connector. Reinstall steering wheel pad. Reconnect negative battery cable. Perform
SYSTEM OPERATION CHECK
.
DISPOSAL PROCEDURES
WARNING:Undeployed air bags contain substances that can cause illness or injury if
improperly handled. Disposing of undeployed components may violate
federal, state and/or local laws. If scrapping vehicle, components must be
deployed while still mounted in vehicle. DO NOT deploy components
inside vehicle unless vehicle is to be scrapped. Wear gloves and safety

1996 Toyota 4Runner
AIR BAG RESTRAINT SYSTEM 1996 ACCESSORIES/SAFETY EQUIPMENT Toyota Air Bag Restraint System
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Fig. 7: Aligning Marks On Spiral Cable
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
REMOVAL & INSTALLATION
AIR BAG SENSOR ASSEMBLY
Removal & Installation
WARNING:Failure to follow air bag service precautions may result in air bag
deployment and personal injury. See SERVICE PRECAUTIONS
. After
component replacement, perform a system operational check to ensure
proper system operation. See SYSTEM OPERATION CHECK
.
NOTE: Disconnect air bag sensor electrical connector before removing sensor
mounting screws.

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

1996 Toyota 4Runner
AIR BAG RESTRAINT SYSTEM 1996 ACCESSORIES/SAFETY EQUIPMENT Toyota Air Bag Restraint System
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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
AIR BAG RESTRAINT SYSTEM 1996 ACCESSORIES/SAFETY EQUIPMENT Toyota Air Bag Restraint System
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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
AIR BAG RESTRAINT SYSTEM 1996 ACCESSORIES/SAFETY EQUIPMENT Toyota Air Bag Restraint System
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Tuesday, August 18, 2009 7:33:32 PMPage 19 © 2005 Mitchell Repair Information Company, LLC.

(s). Measure resistance between body ground and terminal 7 (Tc) of the air bag sensor connector. See Fig. 13.
If resistance is 1000 ohms or more, replace air bag sensor. If resistance is not infinite ohms, replace harness.
CONNECTOR IDENTIFICATION
Fig. 14: Identifying Spiral Cable (Upper) To Passenger
-Side Air Bag Connector
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
RELEASING SHORTING BAR SPRING (ACTIVATION PREVENTION) NOTE: To identify connector terminals, See Fig. 14
.

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