Mazda CX-5 Service & Repair Manual: Low Engine Coolant Temperature Indicator Light (Blue)/High Engine Coolant Temperature Warning Light (Red)
Purpose
Low engine coolant temperature indicator light (blue)
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The low engine coolant temperature indicator light (blue) notifies the driver that the engine coolant temperature is low and vaporization of the fuel is difficult.
High engine coolant temperature warning light (red)
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The high engine coolant temperature warning light (red) notifies the driver that the engine coolant temperature is high and that there is the danger of overheating.
Function
Low engine coolant temperature indicator light (blue)
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The low engine coolant temperature indicator light (blue) illuminates when the engine coolant temperature is low.
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The illumination condition of the low engine coolant temperature indicator light (blue) is as shown in the figure.
High engine coolant temperature warning light (red)
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The high engine coolant temperature warning light flashes at 0.5 s intervals when the engine coolant temperature exceeds the set value, and illuminates if the temperature increases further.
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The flashing/illumination condition of the high engine coolant temperature warning light (red) is as shown in the figure.
Construction
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Illumination, flashing, or turning off of the low engine coolant temperature indicator light (blue)/high engine coolant temperature warning light (red) is controlled by the instrument cluster microcomputer based on the engine coolant temperature signal from the PCM.
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The low engine coolant temperature indicator light (blue)/high engine coolant temperature warning light (red) is set in the instrument cluster.
Operation
Low engine coolant temperature indicator light (blue)
1. When the ignition is switched ON (while engine is running), the instrument cluster receives (1) the engine coolant temperature signal from the PCM via the CAN signal.
2. The instrument cluster turns the transistor on (2) based on the engine coolant temperature signal.
3. When the transistor turns on, the ground circuit of the low engine coolant temperature indicator light (blue) is established and the low engine coolant temperature indicator light (blue) illuminates (3).
High engine coolant temperature warning light (red)
1. When the ignition is switched ON (while engine is running), the instrument cluster receives (1) the engine coolant temperature signal from the PCM via the CAN signal.
2. The instrument cluster turns the transistor on (2) intermittently for flashing and continuously for illumination based on the engine coolant temperature signal.
3. The high engine coolant temperature warning light (red) 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.
Fuel Gauge Sender Unit Removal/Installation [Awd]
WARNING:
Always keep sparks and flames away from fuel when servicing the fuel system.
Fuel can be easily ignited which could cause serious injury or death, and damage
to equipment.
...
Radiator Removal/Installation
WARNING:
Never remove the cooling system cap or loosen the radiator drain plug while
the engine is running, or when the engine and radiator are hot. Scalding engine
coolant and steam may ...
Other materials:
Power Steering
Power Steering
• Power steering is only operable when the
engine is running. If the engine is off or if the power steering system is inoperable,
you can still steer, but it requires more physical effort.
If the steering feels stiffer than usual during normal driving or the steering
vibrate ...
Rear Map Light
Purpose
The rear map lights shine light at the center of the vehicle interior.
Function
The rear map lights illuminate when the interior light switch is in the ON
position or the map light switch is turned on.
The rear map lights illuminate according to the lock condit ...
Cooling System
Outline
Passing water resistance is reduced by improvement of the engine coolant
passage shape.
Pump efficiency is improved by changing the water pump impeller to the closed
impeller.
Structural View
Flow Chart
Structure
Consists of the followi ...
