Mazda RX-8 Manual page 116

Connect the WDS or equivalent to the DLC-2.
Turn the ignition switch to the ON position
(Engine off).
2
Retrieve any DTCs for the PCM, TCM, ABD
HU/CU and the EPS CM.
Are there any DTCs displayed?
3
Notes:
DTC is displayed:
Yes Go to the applicable DTC inspection.
(See DTC TABLE .)
No DTC is displayed:
No
Go to the next step.
Yes Go to the next step.
(w) RX8-Engine Troubleshooting
Page 67