Toyota Tacoma (2015-2018) Service Manual: System Description

• *1: for Hydraulic Brake Booster
• *2: for Vacuum Brake Booster

HINT:

• If the vehicle is stopped by the operation of the pre-collision braking function, the pre-collision braking function operation will be canceled after approximately 2 seconds. Depress the brake pedal as necessary.
• The pre-collision braking function may not operate if certain operations are performed by the driver. If the accelerator pedal is being depressed strongly or the steering wheel is being turned, the system may determine that the driver is taking evasive action and possibly prevent the pre-collision braking function from operating.

• *1: for Hydraulic Brake Booster
• *2: for Vacuum Brake Booster

• When passing a vehicle or pedestrian.
• When changing lanes while overtaking a preceding vehicle.
• When overtaking a preceding vehicle that is changing lanes.
• When overtaking a preceding vehicle that is making a left/right turn.
• When passing a vehicle in an oncoming lane that is stopped to make a right/left turn.
• When driving on a road where relative location to vehicle ahead in an adjacent lane may change, such as on a winding road.
• When rapidly closing on a vehicle ahead.
• If the front of the vehicle is raised or lowered, such as when the road surface is uneven or undulating.
• When approaching objects on the roadside, such as guardrails, utility poles, trees or walls.
• When there is a vehicle, pedestrian or object by the roadside at the entrance of a curve.
• When driving on a narrow path surrounded by a structure, such as in a tunnel or on an iron bridge.
• When there is a metal object (manhole cover, steel plate, etc.), steps, or a protrusion on the road surface or roadside.
• When a crossing pedestrian approaches very close to the vehicle.
• When passing through a place with a low structure above the road (low ceiling, traffic sign, etc.).
• When passing under an object (billboard, etc.) at the top of an uphill road.
• When rapidly closing on an electric toll gate barrier, parking area barrier or other barrier that opens and closes.
• When using an automatic car wash.
• When driving through or under objects that may contact the vehicle, such as thick grass, tree branches or a banner.
• When the vehicle is hit by water, snow, dust, etc. from a vehicle ahead.
• When driving through steam or smoke.
• When there are patterns or paint on the road or a wall that may be mistaken for a vehicle or pedestrian.
• When driving near an object that reflects radio waves, such as a large truck or guardrail.
• When driving near a TV tower, broadcasting station, electric power plant, or other location where strong radio waves or electrical noise may be present.

• If an oncoming vehicle is approaching your vehicle.
• If a vehicle ahead is a motorcycle or bicycle.
• When approaching the side or front of a vehicle.
• If a preceding vehicle has a small rear end, such as an unloaded truck.
• If a preceding vehicle has a low rear end, such as a low bed trailer.
• If a vehicle ahead is carrying a load which protrudes past its rear bumper.
• If a vehicle ahead has extremely high ground clearance.
• If a vehicle ahead is irregularly shaped, such as a tractor or side car.
• If the sun or other light is shining directly on a vehicle ahead.
• If a vehicle cuts in front of your vehicle or emerges from beside a vehicle.
• If a vehicle ahead makes an abrupt maneuver (such as sudden swerving, acceleration or deceleration).
• When suddenly cutting behind a preceding vehicle.
• When a vehicle ahead is not directly in front of your vehicle.
• When driving in inclement weather such as heavy rain, fog, snow or a sandstorm.
• When the vehicle is hit by water, snow, dust, etc. from a vehicle ahead.
• When driving through steam or smoke.
• When driving in a place where the surrounding brightness changes suddenly, such as at the entrance or exit of a tunnel.
• When a very bright light, such as the sun or the headlights of oncoming traffic, shines directly into the forward recognition camera.
• When the surrounding area is dim, such as at dawn or dusk, or while at night or in a tunnel.
• After the engine has started the vehicle has not been driven for a certain amount of time.
• While making a left/right turn and for a few seconds after making a left/right turn.
• While driving on a curve and for a few seconds after driving on a curve.
• If your vehicle is skidding.
• If the front of the vehicle is raised or lowered.
• If the wheels are misaligned.
• If a wiper blade is blocking the forward recognition camera.
• The vehicle is wobbling.
• The vehicle is being driven at extremely high speeds.
• When driving on a hill.
• If the millimeter wave radar sensor assembly is misaligned.

• If the braking functions cannot operate to their full extent, such as when the brake parts are extremely cold, extremely hot or wet.
• If the vehicle is not properly maintained (brakes or tires are excessively worn, improper tire inflation pressure, etc.).
• When the vehicle is being driven on a gravel road or other slippery surface.

• Pedestrians shorter than approximately 3.2 ft. (1 m) or taller than approximately 6.5 ft. (2 m).
• Pedestrians wearing oversized clothing (a rain coat, long skirt, etc.), making their silhouette obscure.
• Pedestrians who are carrying large baggage, holding an umbrella, etc., hiding part of their body.
• Pedestrians who are bending forward or squatting.
• Pedestrians who are pushing a stroller, wheelchair, bicycle or other vehicle.
• Groups of pedestrians which are close together.
• Pedestrians who are wearing white and look extremely bright.
• Pedestrians in the dark, such as at night or while in a tunnel.
• Pedestrians whose clothing appears to be nearly the same color or brightness as their surroundings.
• Pedestrians near walls, fences, guardrails or large objects.
• Pedestrians who are on a metal object (manhole cover, steel plate, etc.) on the road.
• Pedestrians who are walking fast.
• Pedestrians who are changing speed abruptly.
• Pedestrians running out from behind a vehicle or a large object.
• Pedestrians who are extremely close to the side of the vehicle (outside rear view mirror, etc.).

• When the millimeter wave radar sensor assembly or forward recognition camera or the area around either sensor is hot, such as in the sun.
• When the millimeter wave radar sensor assembly or forward recognition camera or the area around either sensor is cold, such as in an extremely cold environment.
• When a millimeter wave radar sensor assembly is dirty or covered with snow, etc.
• When the part of the windshield glass in front of the forward recognition camera is fogged up or covered with condensation or ice.
• If the forward recognition camera is obstructed, such as when the hood is open or a sticker is attached to the windshield near the forward recognition camera.
• When the millimeter wave radar sensor assembly is performing beam axis alignment correction after detecting a misaligned beam axis.

Parts Location

PARTS LOCATION ILLUSTRATION *A for Hydraulic Brake Booster *B for Vacuum Brake Booster *1 FORWARD RECOGNITION CAMERA ...

System Diagram

SYSTEM DIAGRAM Communication Table Sender Receiver Signal Line Millimeter Wave Radar Sensor Assembly Forward Recognition Ca ...

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