Mazda 3 Service Manual: Engine Coolant Protection Inspection [Mzr 2.0, Mzr 2.5]
1. Measure the engine coolant temperature and specific gravity using a thermometer and a hydrometer.
CAUTION:
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Use engine coolant at a concentration that meets the environmental conditions in which the vehicle is driven, otherwise engine damage could occur.
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The engine has aluminum parts and must be protected by an ethylene-glycol-based coolant to prevent corrosion and freezing.
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Do not use coolants containing Alcohol, Methanol, Borate or Silicate. These coolants could damage the cooling system.
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Use only soft (demineralized) water in the coolant mixture. Water that contains minerals will cut down on the coolant’s effectiveness.
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Engine coolant damages paint. If engine coolant does get on a painted surface, rinse it off quickly.
NOTE:
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If the “FL22” mark is shown on or near the cooling system cap, use Mazda Genuine FL22 engine coolant.
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FL22 type engine coolant is shipped as a diluted solution. Use the solution as is when replacing coolant.
2. Determine the engine coolant protection level by referring to the graph shown in the figure.
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If the engine coolant protection level is not correct, add water or engine coolant.
Engine Coolant Level Inspection [Mzr 2.0, Mzr 2.5]
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 ...
Engine Coolant Replacement [Mzr 2.0, Mzr 2.5]
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:
ABS HU/CM Inspection
1. Disconnect the ABS HU/CM connector..
2. Connect the negative battery cable..
3. Attach the tester lead to the ABS HU/CM wiring harness-side connector and
inspect the voltage, continuity, or resistance according to the standard (reference
value) in the table below.
Standard (reference)
...
Electric Variable Valve Timing Actuator, Hydraulic Variable Valve Timing Actuator
Removal/Installation [Skyactiv G 2.0]
WARNING:
A hot engine can cause severe burns. Turn off the engine and wait until it
is cool before servicing.
CAUTION:
Do not disassemble the electric variable valve timing actuator and hydraulic
variable valve timing actuator because they are precision units.
If ...
Front Drain Hose Installation
CAUTION:
If the front drain hose is pinched or bent anywhere, the water in the hose
may not discharge and enter the inside of the vehicle. During and after installation
of the trims and the headliner, always make sure there is no interference with
the front drain hose. Fix any probl ...
