Mazda CX-5 Service & Repair Manual: Master Warning Light
Purpose
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The master warning light warns the driver that any of the following malfunctions is occurring.
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Brake switch malfunction
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Engine oil solenoid valve malfunction
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Automatic configuration malfunction
Function
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The instrument cluster illuminates the master warning light based on the following CAN signals:
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Brake switch No.1 error signal, brake switch No.2 error signal, engine oil solenoid valve error signal, and automatic configuration error signal sent from the PCM
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The instrument cluster flashes the master warning light based on the master warning light flash request signal sent from the PCM as a CAN signal.
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The master warning light flashing pattern is as indicated in the figure.
Construction
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The instrument cluster microcomputer controls the illumination/flashing/turning off of the master warning light based on each error signal sent from the PCM.
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The master warning light is set in the instrument cluster.
Operation
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When the ignition is switched ON (engine off or on), the instrument cluster receives (1) each error signal or a master warning light flash request signal from the PCM.
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The instrument cluster turns the transistor on (2) intermittently for flashing and continuously for illumination based on each signal.
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The master warning light flashes (3) when the transistor is turned on intermittently, and it illuminates (3) when the transistor is turned on continuously.
Fail-safe
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Function not equipped.
Low Fuel Warning Light
Purpose
The low fuel warning light warns the driver that the remaining fuel level
is low.
Function
The instrument cluster calculates the fuel quantity based on the following
...
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 ...
Other materials:
Mass Air Flow (MAF) Sensor/Intake Air Temperature (Iat) Sensor No.1 Removal/Installation
NOTE:
Because the IAT sensor No.1 is integrated in the MAF sensor, replacing the
IAT sensor No.1 includes replacement of the MAF sensor/IAT sensor No.1.
1. Disconnect the negative battery cable..
2. Disconnect the MAF sensor/IAT sensor No.1 connector.
3. Remove the MAF sensor/IA ...
Condenser Inspection
1. Inspect the condenser for cracks, damage, and oil leakage.
If there is any malfunction, replace the condenser.
2. Visually inspect for bent fins for clogging of foreign material.
If any fins are clogged, remove the foreign material.
3. Visually inspect for bent fins.
...
Rear Window Defroster
The rear window defroster clears frost, fog, and thin ice from the rear window.
The ignition must be switched ON.
Press the switch to turn on the rear window defroster. The rear window defroster
operates for about 15 minutes and turns off automatically.
The indicator light illuminates during op ...