Mazda 6 Service Manual: No.4 abs or tcs*1 operates frequently/tcs does not work correctly*1: dsc system function contains traction control function, dsc indicator light goes on and off while dsc operates

No.3 there is a malfunction in the system even though abs warning light, brake system warning light, dsc indicator light and tcs-off light do not illuminate

No.5 dsc*2 operates frequently/dsc does not work correctly*2: dsc indicator light goes on and off while dsc operates

Other materials:

Mazda 6 Service Manual: Inspecting Coolant Level
WARNING Do not use a match or live flame in the engine compartment. DO NOT ADD COOLANT WHEN THE ENGINE IS HOT: A hot engine is dangerous. If the engine has been running, parts of the engine compartment can become very hot. You could be burned. Carefully inspect the engine coolant in the coola ...

Mazda 6 Service Manual: Purge solenoid valve inspection
Airflow Inspection Note Perform the following test only when directed. 1. Disconnect the negative battery cable. 2. Remove the purge solenoid valve. (See PURGE SOLENOID VALVE REMOVAL/INSTALLATION.) 3. Inspect airflow between the ports under the following conditions. If not as specifi ...