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:
Bsm Indicator Light Does Not Flash While Under Bsm Indicator Light Flashing
Conditions (With Combination Switch Operation (Turn Signal Switch)) [Blind Spot
Monitoring (Bsm)]
Description
BSM indicator light does not flash while under BSM indicator light-flashing
conditions (with combination switch operation (turn signal switch))
The BSM indicator light does not flash or illuminate continuously,
but the cond ...
Seat Belt Extender
If your seat belt is not long enough, even when fully extended, a seat belt extender
may be available to you at no charge from your Authorized Mazda Dealer.
This extender will be only for you and for the particular vehicle and seat. Even
if it plugs into other seat belts, it may not hold in the ...
Fuel Injector Relay [Skyactiv G 2.0]
Purpose, Function
Supplies power to the PCM for the fuel injector and spill valve control solenoid
valve operation.
Construction
The fuel injector relay is installed in the relay and fuse block.
Operation
When the ignition is switched ON, the battery voltage ...
