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Mazda CX-5 Service & Repair Manual: Lap Pre Tensioner Seat Belt [Two Step Deployment Control System]

Mazda CX-5 Service & Repair Manual / Engine / Control / Lap Pre Tensioner Seat Belt [Two Step Deployment Control System]

Purpose

Function


Construction


Operation

Lap pre-tensioner activation

1. The gas generator emits a spark when a signal is received from the SAS control module, causing gas to form.

2. The gas pressure pushes the piston inside the tube, pulling the lead wire.

3. As the lead wire is pulled, the part of the seat belt attached to the wire is also pulled.

4. The slack in the belt is tightened by the front seat belt being pulled by the lap pre-tensioner seat belt and the seat belt ELR mechanism, restraining the passengers.


After activation

1. After operating (deploying) the pre-tensioner, the lead wire is pulled back. However the front seat belts are locked by activation of the stopper function so that the belt webbing is not released.

2. The restraint force of the seat belt is adjusted by the front seat belt load limiter mechanism, preventing injury to the driver and passenger from seat belt pressure.


Fail-safe

Ion Sensor
Purpose/Function Detects ion generation in the combustion chamber for detecting pre-ignition. Detects ions which occur due to fuel combustion as current by applying bias voltage to t ...

Neutral Switch Inspection
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Other materials:

Hydraulic Lash Adjuster (Hla) Removal/Installation
WARNING: A hot engine can cause severe burns. Turn off the engine and wait until it is cool before servicing. CAUTION: If the camshaft is rotated with the timing chain removed and the piston at the top dead center position, the valve may contact the piston and the engine ...

Front ABS Wheel Speed Sensor Removal/Installation
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Catalytic Converter
Purpose, Function Purifies contaminants in the exhaust gas by utilizing the chemical reactions of the three-way catalytic converter. A WU-TWC and a TWC have been adopted. WU-TWC The three-way catalyst is integrated with the exhaust manifold. Because the c ...

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