1. Disconnect the negative battery cable.
2. Remove the under cover.
3. Remove the control valve body. (See CONTROL VALVE BODY REMOVAL.)
4. Remove the solenoid valve(s).

5. Apply ATF to a new O-ring and install it on the solenoid valve.
6. Install the solenoid valve in the control valve body.
Tightening torque 7.8-10.8 N·m
{80-110 kgf·cm, 70-95.4 in·lbf}

7. Install the control valve body. (See CONTROL VALVE BODY REMOVAL.)
8. Install the under cover.
9. Connect the negative battery cable.
10. Add ATF and, with the engine idling, inspect the ATF level and inspect for leakage. (See Automatic Transaxle Fluid (ATF) Level Inspection.)
11. Carry out the mechanical system test. (See MECHANICAL SYSTEM TEST.)
12. Carry out the road test. (See ROAD TEST.)
Solenoid valve inspection
Pcm inspectionMazda 6 Service Manual: No.6 windshield fogged
When performing an asterisked (*) troubleshooting inspection, shake the
wiring harness and connectors while doing the inspection to discover whether
poor contact points are the cause of any intermittent malfunctions. If there
is a problem, check to make sure connectors, terminals and wir ...
Mazda 6 Service Manual: Wheel hub, hub spindle pre-inspection
Wheel Bearing Play Inspection
1. Position a dial indicator against the wheel hub.
2. Push and pull the wheel hub by hand in the axial direction and measure the
wheel bearing play.
Maximum wheel bearing play
0.05 mm {0.002 in}
3. If the bearing play exceeds the specification, replace a ...