Air Injection Control Valve: Service and Repair

Secondary Air Injection Shut-Off Valve Replacement

Removal Procedure




1. Remove the fuel injector sight shield.
2. Remove the AIR pump outlet hose nut (1).
3. Squeeze the tangs together on the AIR pump outlet hose clamp (2) at the valve until they lock, and reposition the clamp.




4. Disconnect the engine wiring harness electrical connector from the AIR check valve.




5. Remove the engine sight shield bracket bolts.
6. Remove the engine sight shield bracket.




7. Remove the AIR check valve bracket upper bolts (1).
8. Remove the AIR check valve to exhaust manifold nuts (2).
9. Remove the AIR check valve.
10. Remove and discard the AIR check valve to exhaust manifold gasket (3).

Installation Procedure




1. Install a NEW AIR check valve to exhaust manifold gasket (3).
2. Install and position the AIR check valve.
3. Install the AIR check valve to exhaust manifold nuts (2).
4. Install the AIR check valve bracket upper bolts (1).




5. Position the engine sight shield bracket.
6. Install the engine sight shield bracket bolts.




7. Connect the engine wiring harness electrical connector to the AIR check valve.




8. Install the AIR pump outlet hose to the AIR check valve.
9. Position and release the AIR pump outlet hose clamp (2) at the AIR check valve.

Notice: Refer to Fastener Notice in Service Precautions.

10. Install the AIR pump outlet hose nut (1).

Tighten the nut to 9 N.m (80 lb in).

11. Install the fuel injector sight shield.