Mazda RX-8 Workshop Manual page 572

Are DTCs besides P0455, P0442 or P0456 present?
VERIFY EVAP DTCs
5
Did the M-MDS EVAP test produce DTCs P0455, P0442 or
P0456?
SECONDARY EVAP SYSTEM TEST
6
Tighten the fuel-filler cap then perform the EVAP system
leak inspection using the M-MDS again.
(See ENGINE CONTROL SYSTEM OPERATION INSPECTION
[13B-MSP].)
Verify that all PIDs are within the following specifications:
NOTE:
the EVAP test If the fuel
level is lower than 15%
or higher than 85%.
Allow the M-MDS to run
the EVAP test.
To successfully perform this procedure, all
PIDs must be within the specification before
proceeding to the next step.
Select the following items
from the initialization
screen of the M-MDS.
Select "Powertrain".
Select "Fuel".
Select "EVAP Test".
Verify that ECT and IAT
are within the specification
on the confirmation screen.
To successfully perform
this procedure, ECT and
IAT must be within the
specification before
proceeding to the next
step.
The fuel level must be
maintained within 15%—
85%. The PCM will cancel
the EVAP test If the fuel
level is lower than 15%
or higher than 85%.
Allow the M-MDS to run
the EVAP test.
YesGo to the next step.
No Go to Step 8.
YesGo to the next step.
No Fuel-filler cap was not
properly tightened. Go to
Step 11.