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DTC OUTPUTS HINT: If the vacuum hose between the ASV and the pressure sensor is not connected correctly, case 4 may By using the Techstream to perform the Air Injection Check operation in the System Check, the air-fuel Read freeze frame data using the Techstream. Freeze frame data records the engine condition when System Check: The pressure in the secondary air passage can be checked using the Techstream. a. Start the engine and warm it up. b. Turn the ignition switch off. c. Connect the Techstream to the DLC3. d. Turn the ignition switch to ON and turn the Techstream ON. Detected Conditions while AIR operating: Air pump ON, ASV Open Detected Conditions while AIR not operating: Air pump OFF, ASV Closed ECM Determination DTCs Output Case 1 Case 8 Normal - Case 1 Case 6 ASV stuck open P2440 or P2442 Case 1 Case 7 Air pump stuck ON P2444 or P2446 Case 2 Case 8 Air pump stuck OFF P2445 or P2447 Case 3 Case 8 ASV stuck closed P2441 or P2443 Case 1 Case 5 ASV stuck open and air P2440 and P2444 or P2442 and P2446 Case 2 Case 6 ASV stuck open and air P2440 and P2445 or P2442 and P2447 Case 3 Case 7 ASV stuck closed and P2441 and P2444 or P2443 and P2446 Case 4 Case 8 ASV stuck closed and P2441 and P2445 or P2443 and P2447
2009 Toyota Tundra 2009 ENGINE PERFORMANCE Engine Control System (3UR-FBE) - Tundra
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