Mazda RX8 - Secondary Air Injection (AIR) System Inspection

Secondary Air Injection (AIR) System Inspection
1. Connect the WDS or equivalent to the DLC-2.
2. Verify that DTC P2257, P2258, P2259 or P2260 is not displayed.
• If DTC P2257, P2258, P2259 or P2260 are displayed, perform DTC inspection.
(See DTC TABLE .)
3.
4. Access the ECT PID.
5. Start the engine and warm it up to the normal operating temperature.
6. Cool down the engine to that the ECT PID is 30°
°°
°C {86°
°°
°F} or less .
7. Turn the ignition switch to the ON position.
8. Verify that the PCM terminal 1O voltage is B+ and the AIR pump is not operating.
• If the PCM terminal 1O voltage is not B+, inspect and repair or replace open or short circuit
between PCM terminal 1O and AIR solenoid valve connector B.
• If the AIR pump is operating inspect for the following:
! AIR pump relay (stuck closed)
! Wiring harnesses and connectors (Main relay terminal CAIR pump relayPCM
terminal 4O/AIR PUMP fuseAIR pump relayAIR pump)
9. Start the engine.
10. Verify that the AIR pump is operating and the PCM terminal 1O voltage is 0 V after the engine is
started.
• If the AIR pump does not operate, inspect for the following:
! AIR pump relay (stuck open)
! AIR pump (internal malfunction)
! Wiring harnesses and connectors (Main relay terminal CAIR pump relayPCM
terminal 4O/AIR PUMP fuseAIR pump relayAIR pumpGND)
• If PCM terminal 1O voltage is not 0 V , inspect and repair or replace open or short circuit
between PCM terminal 1O and AIR solenoid valve connector B.
(w) RX8-Engine Troubleshooting
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