Mazda CX-5 Service & Repair Manual: Lap Pre Tensioner Seat Belt [Two Step Deployment Control System]
Purpose
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The lap pre-tensioner seat belts retract and tighten the seat belt webbing to protect the front passengers during a collision.
Function
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The lap pre-tensioner seat belts operate (deploy) based on the operation signal from the SAS control module to instantly retract and tighten the belt webbing, restraining the driver.
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The lap pre-tensioner seat belts operate in conjunction with the pre-tensioner seat belts.
Construction
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The lap pre-tensioner seat belts are installed to the anchors of the front seat belts.
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The lap pre-tensioner seat belts consist of the following parts shown in the figure:
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
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Function not equipped.
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
Continuity Inspection
1. Disconnect the negative battery cable..
2. Remove the neutral switch..
3. Inspect for continuity between neutral switch No.1 terminal A and B.
If not as speci ...
Other materials:
Engine Oil Control
Outline
The PCM reduces the oil pump load applied to the engine by controlling the
appropriate engine hydraulic pressure according to the engine operation conditions.
The engine hydraulic pressure switches in two steps. When hydraulic pressure
is not needed, the oil pump dischar ...
Fuel Distributor [Skyactiv G 2.0]
Purpose, Function
Distributes fuel pumped from the high pressure fuel pump to each fuel injector.
Construction
The fuel distributor is installed to the cylinder head.
The fuel distributor is integrated with the fuel pressure sensor.
...
Seat Warmer System
Purpose
The seat warmer system warms the front seat cushion and front seat back using
the seat warmer unit.
Function
The seat warmer unit warms the seat cushion and seat back by supplying power
to the built-in filaments.
The seat warmer unit can adjust the tempe ...