Mazda RX-8 Manual page 95

Vacuum connection
•
External fuel shut off or
•
accessory (such as kill switch,
alarm.)
Fuel quality: proper octane,
•
contamination, winter/summer
blend
No air leakage from intake-air
•
system
Proper sealing of intake
•
manifold
Ignition wiring
•
Electrical connections
•
Fuses
•
Smooth operation of throttle
•
valve
Are all the items normal?
Connect the WDS or equivalent to the
DLC-2.
Turn the ignition switch to the ON
9 position (Engine off).
Retrieve any DTCs.
Are there any DTCs displayed?
10
Service if necessary.
No
Repeat Step 8.
DTC is displayed:
Go to the applicable DTC inspection.
(See DTC TABLE .)
OR
Communication error message is
displayed:
Inspect for the following:
Yes
Open circuit between main
•
relay and PCM terminal 5AC
or 5AF
Open main relay GND circuit
•
Main relay is stuck open.
•
Open or poor GND circuit
•
(PCM terminal 4A, 4J, 5T, 5D,
5O or 5R)
Poor connection of vehicle
•
body GND
No DTC is displayed:
No
Go to the next step.
Yes Go to the next step.
(w) RX8-Engine Troubleshooting
Page 46