1. Drain the ATF. (See AUTOMATIC TRANSAXLE FLUID (ATF) REPLACEMENT.)
Caution
2. Remove the drive shaft. (See DRIVE SHAFT REMOVAL/INSTALLATION.)
3. Remove the oil seal.
4. Using the SST
and a hammer, tap a new oil seal in evenly until the SST
contacts the transaxle case.

5. Coat the lip of the oil seal with transaxle oil.
6. Install the drive shaft. (See DRIVE SHAFT REMOVAL/INSTALLATION.)
7. Add ATF to the specified level. (See AUTOMATIC TRANSAXLE FLUID (ATF) REPLACEMENT.)
8. Carry out the mechanical system test. (See MECHANICAL SYSTEM TEST.)
Automatic transaxle removal/installation
Control valve body removalMazda 6 Service Manual: No.1 while vehicle is in reverse, vehicle locator mark goes forward
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 malfunction. If there
is a problem, check to make sure connectors, terminals and wiri ...
Mazda 6 Service Manual: Dtc clearing procedure
1. Start the on-board diagnostic test mode.
2. First press the POWER button, then simultaneously press AUDIO CONT button
for 2 seconds or more.
Caution
Before clearing the DTCs, be sure to enter all of them displayed
in the on-board diagnostic test mode in the Audio Repair Order Form. ...