Mazda 6 Service Manual: No.12 torque converter clutch (tcc) non-operation

No.11 shift point is high or low

No.13 no kickdown

Other materials:

Mazda 6 Service Manual: Gear Shift Indicator (GSI)
The Gear Shift Indicator (GSI) supports you to obtain optimum fuel economy and smooth driving. It displays the selected gear position in the instrument cluster as well as notifies the driver to change to the most suitable gear position corresponding to the actual driving condition. CAUTIO ...

Mazda 6 Service Manual: Clutch fluid replacement
Caution Be careful not to spill clutch fluid on a painted surface. If this should happen, wash it off immediately. Note Do not mix different brands of clutch fluid. Do not reuse the clutch fluid that was drained out. 1. Remove the under cover. 2. Draw the fluid from the reservoir ...