AIR24 - Visually Inspect Check Valve System (Externally)

^ Key OFF.

^ Visually inspect secondary air hoses, tubes, control valves and check valves for leaks or external signs of damage (from back flow of hot exhaust gases).

^ Are hoses and valves intact?

YES -- Go to AIR25. AIR25 - Visually Inspect Hoses at Valves (Internally)

NO -- Service or replace damaged parts including check valve. Verify drive concern.