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The pressure in the secondary air passage can be checked using the Techstream. Start the engine and warm it up. a. Turn the ignition switch off. b. Connect the Techstream to the DLC3. c. Turn the ignition switch to ON. d. Turn the Techstream on. e. Enter the following menus: Powertrain / Engine and ECT / Utility / Secondary Air Injection Check / Manual Mode / AIR PUMP 1: ON, ASV1: OPEN, AIR PUMP 2: ON, ASV2: OPEN and AIR PUMP 1: OFF, ASV1 CLOSE, AIR PUMP 2: OFF, ASV2 CLOSE. HINT: When Manual Mode is selected, the Techstream initialization (atmospheric pressure measurement) is performed automatically. The initialization takes 10 seconds. After the f. Start the engine. g. Perform the AIR system forced operation while the engine is idling. h. Check that the air pump (AIR PUMP), ASV and pressure in the AIR system passage (PRESSURE) displayed on the Techstream indicate the conditions shown in the table below. Standard: TESTER OPERATION AIR PUMP ASV PRESSURE*1 PULSATION*2 AIR PUMP: ON, ASV: OPEN ON OPEN 1.9 kPa or more 18 kPa or more AIR PUMP: OFF, ASV: CLOSE OFF CLOSE Less than 3.0 kPa Less than 25 kPa *1: Average pumping pressure (gauge pressure). The pressure should be 1.9 kPa or more when the AIR system operates. *2: The cumulative exhaust pulsation calculated by the ECM. If the calculated value exceeds a certain level, the ECM determines that the exhaust pulsation is in the AIR system. i. Turn the ignition switch off. NOTICE: This Secondary Air Injection Check only allows technicians to operate the AIR system for display indicates the prohibition (WAIT or ERROR). If ERROR is displayed on the Techstream during the test, stop the engine for 10 minutes, and then try again. Performing the Secondary Air Injection Check repeatedly may cause damage to the AIR been reconnected, wait for 7 minutes with the ignition switch turned to ON or the engine Turn the ignition switch off when the Secondary Air Injection Check operation finishes. j. PROCEDURE 1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2440-P2443;... |