Mazda 6 Service Manual: No.20 noise occurs at idle when vehicle is stopped in all positions/ranges

No.19 excessive shift shock on torque converter clutch (tcc)

No.21 noise occurs at idle when vehicle is stopped in d, s, l ranges, or in r position

Other materials:

Mazda 6 Service Manual: Oil leakage inspection
Use either of the following procedures to identify the type of oil that is leaking: Using UV Light (Black Light) 1. Remove on the engine or transaxle. Note Referring to the fluorescent dye instruction manual, mix the specified amount of dye into the engine oil or ATF (or transaxle ...

Mazda 6 Service Manual: Cruise actuator inspection
1. Disconnect the cruise actuator connector. 2. Measure the voltage, continuity and resistance at the cruise actuator terminals as indicated below. If not as specified, inspect the parts listed under Action. If the parts and wiring harnesses are okay but the system still does not work pr ...