Mazda RX-8 Manual page 424

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If there is no sound of operation from the AIR pump relay, inspect the following items and repair

or replace the malfunction part.

AIR pump relay stuck open

Wiring harness, connectors: open circuit (PCM terminal 4OAIR pump)

Wiring harness, connector: open circuit (main relay terminal DAIR pump relay

If there is no sound of operation from the AIR pump, inspect the following items and repair or

replace the malfunction part.

Wiring harness, connectors: open or short circuit (BatteryAIR pump relayAIR pump

Wiring harness, connectors: open or short circuit (AIR pump terminal Bground)

5. Inspect the discharging pressure of the AIR pump. (See Discharging Pressure Inspection .)

If the discharging pressure is not as specified, replace the AIR pump.

6. Remove the vacuum hose connected to the AIR control valve.

7. Verify that vacuum hose removed when idling is not pressurized with negative pressure.

Engine Specifications

Troubleshooting