For 1990-2009 cars

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 | Important: Transmission fluid may turn dark with normal use and does not always indicate contamination or oxidation. Check the fluid color. Is the fluid color red? | -- | Go to Step 4 | Go to Step 2
2 | Check the fluid color. Is the fluid color a non-transparent pink? | -- | Go to Step 13 | Go to Step 3
3 | Check the fluid color. Is the fluid color light brown? | -- | Go to Step 18 | --
4 | Check the fluid level. Is the fluid level high? | -- | Go to Step 8 | Go to Step 5
5 | Check the fluid level. Is the fluid level OK? | -- | Go to Step 20 | Go to Step 6
6 | Check the fluid level. Is the fluid level low? | -- | Go to Step 9 | Go to Step 7
7 | Check the fluid level. Does the fluid have foam? | -- | Go to Step 12 | Go to Step 13
8 | Remove excess fluid. Did you remove the excess fluid? | -- | Go to Step 20 | --
9 | Add fluid in order to obtain the proper level. Did you add fluid to the proper level? | -- | Go to Step 10 | --
10 | Inspect for external leaks. Are there any external leaks? | -- | Go to Step 11 | --
11 | Repair the leak. Did you repair the leak? | -- | Go to Step 20 | --
12 | Inspect for a high fluid level. Is the fluid level high? | -- | Go to Step 8 | Go to Step 13
13 | Check for contaminants in the fluid. Are there contaminants in the fluid? | -- | Go to Step 14 | --
14 | Drain the fluid in order to determine the source of contamination. Did you drain the fluid? | -- | Go to Step 15 | --
15 | Perform a transmission overhaul. Did you perform the procedure? | -- | Go to Step 16 | --
16 | Add new fluid. Did you add new fluid? | -- | Go to Step 17 | --
17 | Check the fluid level. Did you check the fluid level? | -- | Go to Step 20 | --
18 | Important: A very small amount of material in the bottom pan is a normal condition. Drain the fluid in order to determine if there is contamination. Are there large pieces of metal or other material in the bottom of the pan? | -- | Go to Step 15 | Go to Step 19
19 | Change the fluid and filter. Did you change the fluid and filter? | -- | Go to Step 20 | --
20 | Perform the road test. Did you perform the test? | -- | System OK | --