Mazda RX8 - Page 161

5. Connect the WDS or equivalent to the DLC-2.
6. Turn the ignition switch to the ON position (Engine off).
7. Request the PCM for on-board device control (Mode 08) using the WDS or equivalent to close the
change-over valve (COV) in the EVAP system leak detection pump.
NOTE:
• The COV closes for 10 min unless any of the following any actions are done:
! The engine is started.
! The ignition switch is turned off.
8. Turn the control valve to the FILL position.
9. Wait ( maximum 40 s ) until the left display reads 34.3 to 35.5 cm {13.5 to 14 in} of water.
• If the reading is slightly below, adjust it using the regulator knob.
• If the reading is far below, the EVAP system has a large leak. Check for leaks (using the
ultrasonic leak detector if necessary) and repair.
10. Turn the control valve to the TEST position and press the START switch.
11. After the 2 min countdown (left display) is completed, check the test result (the failed/passed light on
the tester).
• If the green light illuminates, the EVAP system is OK.
• If the red light illuminates, the EVAP system has leakage. Check for leaks using the ultrasonic
leak detector and repair.
12. Close the gas cylinder valve.
13. Turn the control valve to the FILL position.
14. Press the ON/OFF switch to turn off the tester.
(w) RX8-Engine Troubleshooting
Page 161