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AID DIAGNOSTIC SIGNAL WAVEFORMS System Check operations to prevent the system from overheating. When performing the Air Injection Check operation after the battery cable Turn the ignition switch off when the Air Injection Check operation AID Diagnostic Signal Waveforms ECM Commands DTCs (ECM Output) Suspected Trouble Areas 100% Duty Ratio Any Secondary Air Injection (AIR) System operation P1613 Open in diagnostic signal Air Injection Control Open in AID BATT circuit Short between +B and 0% Duty Ratio AIR System: ON (Air pump ON, ASV ON) P1613 Open or short in air pump Short between diagnostic AID ECM 0% Duty Ratio AIR System: OFF (Air pump OFF, ASV OFF) - Normal 20% Duty Ratio Air Pump: ON P0418 Short between air pump Harness and connector Air pump AID ECM 20% Duty Ratio Open in air pump drive
2009 Toyota Tundra 2009 ENGINE PERFORMANCE Engine Control System (3UR-FBE) - Tundra
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