• 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?
No
Service if necessary.
Repeat Step 8.
Yes
DTC is displayed:
Go to the applicable DTC inspection.
(See DTC TABLE .)
OR
Communication error message is
displayed:
Inspect for the following:
• 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
9
Connect the WDS or equivalent to the
DLC-2.
Turn the ignition switch to the ON
position (Engine off).
Retrieve any DTCs.
Are there any DTCs displayed?
No
No DTC is displayed:
Go to the next step.
10 Yes Go to the next step.
(w) RX8-Engine Troubleshooting
Page 46
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