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Home >> Buick >> 1996 >> Roadmaster Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control Systems - Tests W/Codes >> Diagnostic Trouble Codes >> DTC P0410 - Air System >> Circuit Description
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Circuit Description

Secondary Air Injection (AIR) system is used to lower tailpipe emissions during start up. PCM supplies ground to AIR pump relay, energizing pump.

PCM runs 2 tests using the HO2S voltages to diagnose the AIR system. The test consists of:

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