Toyota 89170-52D70 Sensor Assembly, Air Bag

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To remove the driver's airbag, first deactivate the airbag system, then remove the two Torx screws located at the back of the steering wheel centre pad, which may be tight. Carefully pull away the back section of the wheel boss to release the airbag unit, then disconnect the wiring plug by pressing and sliding back the locking catch and prising up the yellow section before disconnecting the main body. Store the airbag safely. For refitting, ensure the battery remains disconnected while reconnecting the airbag wiring, securely reconnect the wiring plug, and tighten the Torx screws. For the passenger's airbag, deactivate the airbag system, remove the upper facia panel, and then the two retaining nuts before prising up the clips to release the unit. During refitting, keep the battery disconnected, ensure the wiring harness is routed correctly, and tighten the mounting nuts. To remove the airbag clockspring, first take out the driver's airbag unit, then the steering wheel and column shrouds. Disconnect the airbag wiring plug and horn connector, secure the clockspring in its centred position with tape, and release the clips to withdraw the unit without turning it. Refitting involves centralising the clockspring before attaching the steering wheel. Side airbags should not be removed; any issues should be addressed by a dealer. For the airbag control unit, deactivate the airbag system, remove the trim panel, disconnect the wiring plugs, and unscrew the securing bolts. During refitting, ensure the battery is disconnected, reconnect the wiring securely, and tighten the bolts to the specified torque. Front impact sensors are located under the bonnet; deactivate the airbag system, remove the air cleaner if necessary, disconnect the wiring plug, and unscrew the mounting bolts. For side impact sensors, located in the 8-pillars and possibly inside the door on 3-door models, deactivate the airbag system, remove the appropriate trim panel, disconnect the wiring plug, and unscrew the mounting bolts. Refitting for both types of sensors requires the battery to be disconnected, secure reconnection of wiring, and tightening of the mounting bolts to the specified torque.

The airbag's two Torx screws are fitted to the back of the steering wheel centre pad and are recessed. Use only the proper tools to remove them, as they may be quite tight. The screws cannot be removed completely; when the screw head is flush with the back of the wheel pad, it has been released.