Mazda 6 Service Manual: Dtc 21

Dtc 19

Dtc 22

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Mazda 6 Service Manual: Engine coolant
ENGINE COOLANT LEVEL INSPECTION Verify that the coolant level in the coolant reservoir is between the F and L marks. If the engine coolant level is below L, remove the radiator cap and add coolant. (See COOLING SYSTEM SERVICE WARNINGS.) ENGINE COOLANT REPLACEMENT Warning Drain the ...

Mazda 6 Service Manual: Variable air duct (vad) shutter valve inspection (l3)
1. Remove the air cleaner case. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION.) 2. Disconnect the vacuum hose from the VAD shutter valve actuator. 3. Connect a vacuum pump to the VAD shutter valve actuator. 4. Apply vacuum and verify that the rod moves. If the rod dose not move, replace the a ...