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CHECK MODE PROCEDURE HINT: Compared to the normal mode, check mode is more sensitive to malfunctions. Therefore, check mode can 1. CHECK MODE PROCEDURE a. Check and ensure the following condition: 1. Battery positive voltage 11 V or higher. 2. Throttle valve fully closed. 3. Transmission in the P or N position. 4. A/C switch OFF. b. Turn the ignition switch OFF. c. Connect the Techstream to the DLC3. d. Turn the ignition switch ON. e. Turn the Techstream ON. f. Enter the following menus: Powertrain/Engine and ECT/Utility/Check Mode. g. Switch the ECM from normal mode to check mode. h. Make sure the MIL flashes as shown in the illustration. i. Start the engine. j. Make sure the MIL turns OFF. k. Simulate the conditions of the malfunction described by the customer. l. Check DTCs and freeze frame data using the Techstream. DTC Cleared cleared - Warmup Cycle Cleard DTC Warm-up cycle after DTC - NOTE: All the stored DTCs and freeze frame data are erased if: 1) the ECM is changed
2008 Toyota Tundra 2008 ENGINE PERFORMANCE Engine Control System (1GR-FE) - Tundra
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