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SYSTEM OPERATION CHECK An air bag light is located on left side of instrument cluster. Air bag light is used to indicate readiness of system. Light glows when ignition switch is on or engine is started. Light should stay on about 3 seconds while air bag control unit performs an electronic test of system. If air bag light does not glow when ignition is on or does not go out after 3 seconds, a fault probably exists in system. If a fault occurs while ignition is on, it is stored in fault memory. Warning light will then glow and air bag system will be switched off. If warning light glows or flickers while driving, air bag system should be tested. See DIAGNOSIS & TESTING in appropriate AIR BAG RESTRAINT SYSTEM article in ACCESSORIES/SAFETY EQUIPMENT section. * * ADJUSTMENTS AIR BAG SPIRAL SPRING To center spiral spring assembly, turn spring assembly 3 turns from stop in either direction. 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. AIR BAG MODULE Removal 1) Before proceeding, follow air bag service precautions. See SERVICE PRECAUTIONS. Disable air bag system. See DISABLING & ACTIVATING AIR BAG SYSTEM. 2) Air bag module is located in steering wheel. See Fig. 1. Remove air bag module Torx head screws from rear of steering wheel. Lift off air bag module from steering wheel, and tilt air bag module downward. Disconnect air bag module connector. AIR BAG RESTRAINT SYSTEM – 1995 AIR BAG RESTRAINT SYSTEM – 1996

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DESCRIPTION Some customers may complain of a loud, beeping noise when placing small objects on the passenger front seat such as a briefcase or laptop computer. The noise occurs after placing vehicle in drive and exceeding a speed of 12 mph. The noise may be due to the seat belt minder. The seat belt minder is a supplemental warning to the seat belt warning function established for North American specification vehicles. This feature provides an additional reminder to the passenger that the passenger’s seat belt is not fastened, by intermittently emitting a beep sound and flashing the seat belt warning light in the instru- ment cluster. The seat belt minder can be deactivated and restored again if the customer wishes. The following information is included in the Owner’s Manual:LONG-TERM DEACTIVATION To deactivate belt minder long-term, instrument cluster configuration will be changed using WDS. If belt minder is deactivated long-term, it will remain deactivated until it is restored using WDS. NOTE: Long-term deactivation cannot be canceled by turning ignition switch to OFF/ON or by disconnecting battery. To deactivate belt minder long-term using WDS version B37 or higher: 1. Identify vehicle, verify “Vehicle Specification” recognition screen information. 1511a 2. Is vehicle equipped with DSC? Select “NO”, then press Tick.

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1. Pull out on the accessory trim plate in order to release the retaining fasteners. 2. Disconnect the accessory trim plate electrical connector(s). 3. Remove the screw retaining the cluster trim plate to the center trim panel. 4. Lift up on the cluster trim plate to release the retaining fasteners. 5. Remove the cluster trim plate. 6. Remove the cluster screws 7. Pull the cluster out and disconnect the electrical connector. 8. Remove the cluster from the vehicle. Installation Procedure 1. Position the cluster in the vehicle and connect the cluster electrical connector. Notice: Refer to Fastener Notice in the Preface section. 2. Install the cluster screws Tighten Tighten the cluster screws to 2.5 N·m (22 lb in). 3. Align the cluster trim plate retaining fasteners with the center trim panel. 4. Push on the outer edge of the cluster trim plate in order to secure the retaining fasteners. 5. Install the screw retaining the cluster trim plate to the center trim panel. Tighten Tighten the cluster trim plate screw to 2.5 N·m (22 lb in). 6. Connect the accessory trim plate electrical connector(s). 7. Align the retaining fasteners with the I/P. 8. Push on the outer edge of the accessory trim plate in order to secure the retaining fasteners.

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Removing Installing . Removing Switch off ignition. Remove glove compartment Remove instrument panel center trim Installing Remove instrument cluster trim Remove passenger-side instrument panel trim Trim, Removing and Installing Note: To provide a better overview, the adjacent components are only partially shown in the illustration. Remove the two bolts – 1 – (1.5 Nm). Remove center storage compartment unit – 2 – from instrument panel. Glove Compartment, Removing and Installing Center Instrument Panel Trim, Removing and Instrument Cluster Trim, Removing and Installing Passenger Side Instrument Panel Disconnect wiring harness from warning light switch. Installing Installation is performed in the reverse order of removal.

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DTC P0500: VEHICLE SPEED SENSOR (VSS) MALFUNCTION (ES 300 & HIGHLANDER) CAUTION: If ECM replacement is instructed in following testing, always ensure ECM harness connector and ground circuit are okay. If either are suspect, repair and repeat testing to confirm ECM malfunction. If ECM is replaced, ECM must be programmed with proper ignition key code for engine immobilizer system. For programming procedures, see COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION. NOTE: For circuit reference, see CONNECTOR IDENTIFICATION and/or WIRING DIAGRAMS . Circuit Description Anti-Lock Brake System (ABS) wheel speed sensors detect wheel speed and sends signals to ABS ECU. The ABS ECU converts signals into a 4-pulse signal and outputs signal to instrument cluster. Instrument cluster converts signal to a more precise waveform and outputs signal to ECM. ECM determines vehicle speed based on frequency of these pulse signals. DTC is set when ECM does not detect any VSS signal while vehicle is in motion. Possible causes are: Faulty wheel speed sensors. Open or short in VSS circuit. Faulty instrument cluster. Faulty ECM. l l l l Diagnosis & Repair eg