Mazda CX-5 Service & Repair Manual: Power Steering Malfunction Indicator Light
Purpose
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The power steering malfunction indicator light warns the driver that there is a malfunction with the electric power steering (EPS) system.
Function
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If there is a malfunction in the EPS system, the power steering malfunction indicator light illuminates.
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If the EPS system and CAN lines are normal, it illuminates when the ignition is switched ON (engine off), and turns off after the engine is started.
Construction
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The power steering malfunction indicator light is built into the instrument cluster.
Operation
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EPS system malfunction detection
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If the EPS control module (CM) detects a system malfunction, it sends a power steering malfunction indicator light illumination on request signal to the instrument cluster via CAN.
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The instrument cluster illuminates the power steering malfunction indicator light when it receives a power steering malfunction indicator light illumination on request signal.
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Initial check
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If the EPS system and CAN lines are normal, it illuminates when the ignition is switched ON (engine off), and turns off after the engine is started. If there is a system malfunction, the power steering malfunction indicator light illuminates.
Fail-safe
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Function not equipped.
Panel Light Control Indicator Alarm
Purpose
The panel light control indicator alarm notifies the driver that the panel
light brightness is either at maximum or minimum.
Function
If the panel light control switch i ...
Seat Belt Warning Alarm
Purpose
The seat belt warning alarm warns occupants that a seat belt is not fastened.
Function
The instrument cluster sounds the seat belt warning alarm based on the following
C ...
Other materials:
Positive Crankcase Ventilation (PCV) Valve
Purpose, Function
Prevents release of blow-by gas (unburnt gas) into the atmosphere.
The PCV valve is open/closed by the intake manifold vacuum.
Construction
The PCV valve is installed to the oil separator.
The PCV valve consists of a spring and valve.
...
Immobilizer System
The immobilizer system allows the engine to start only with a key the system
recognizes.
If someone attempts to start the engine with an unrecognized key, the engine
will not start, thereby helping to prevent the theft of your vehicle.
If you have a problem with the immobilizer system or the k ...
Air Fuel Ratio (A/F) Sensor Heater Control
Outline
Based on the control of the A/F sensor heater, a stabilized oxygen concentration
is detected even at low exhaust temperatures, and feedback control of fuel injection
even at cold engine start is made possible for improved cold temperature exhaust
emission performance.
...
