Diverter Valve: Notes

Air flows from air pump into diverter valve. This valve prevents backfiring, by stopping air injection flow during periods of high increase in manifold vacuum (such as during deceleration). Diverter valve dumps air supply to atmosphere for the first few seconds of deceleration.

Most diverter valves also have built-in pressure relief valve, which bleeds off excessive air pump pressure to prevent damage to the system. Most diverter valves are similar. See Figure . Electric diverter valve is used on GM and Jeep V6 California models and is controlled by the Electronic Control Module (ECM).