Mazda CX-5 Service & Repair Manual: Ion Sensor
Purpose/Function
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Detects ion generation in the combustion chamber for detecting pre-ignition.
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Detects ions which occur due to fuel combustion as current by applying bias voltage to the spark plug, which is amplified in the ignition coil internal circuit and input to the PCM.
Construction
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Built into the ignition coil.
Operation
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Accumulates the secondary current of the ignition coil in bias condenser (1) and detects ion current (2) by applying the bias voltage to the spark plug.
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Pulls in current (4) increased by current amplification circuit (3) to the ignition coil from the PCM.
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The PCM measures/converts the current sent to the ignition coil and monitors.
Ion generation mechanism
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Ions are generated based on: fuel combustion = chemical reaction / disassociation. The generated negative ions move to the center electrode of the spark plug to which bias voltage is applied, positive ions move to the grounded engine wall surface, and then current flows from the spark plug to the ignition coil.
Fail-safe
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Function not equipped.
Ion Sensor Inspection
DTC Inspection
1. Connect the M-MDS to the DLC?2.
2. Perform the DTC inspection using the M-MDS..
If any DTC related to the ignition coil/ion sensor is present, repair the
malfunctioning ...
Lap Pre Tensioner Seat Belt [Two Step Deployment Control System]
Purpose
The lap pre-tensioner seat belts retract and tighten the seat belt webbing
to protect the front passengers during a collision.
Function
The lap pre-tensioner seat belts ...
Other materials:
Front Door Key Cylinder Removal/Installation
1. Disconnect the negative battery cable..
2. Remove the service hole cover.
3. Detach the screw from the front door key cylinder.
NOTE:
The screw cannot be removed because the front outer handle bracket has a
stopper which prevents the screw from falling.
4. While pre ...
Passenger Side Air Bag Module [Standard Deployment Control System]
Purpose
When the passenger-side air bag module receives an impact from a frontal
or frontal offset collision, the operation (deployment) of the air bag mediates
the impact to the head and face of the front passenger.
Function
When the passenger-side air bag module receives ...
ABS Wheel Speed Sensor And ABS Sensor Rotor
Purpose/Function
The ABS wheel-speed sensor and ABS sensor rotor detect the rotation condition
of each wheel and transmit this information to the DSC HU/CM.
The signal from the ABS wheel-speed sensor is the primary signal that the
DSC HU/CM uses when carrying out control.
...
