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NG: Go to step 4 OK: Go to next step. 3. CHECK WHETHER DTC OUTPUT RECURS (DTC P0011, P0012, P0021 OR P0022) a. Connect the Techstream to the DLC3. b. Turn the ignition switch to ON and turn the Techstream ON. c. Clear DTCs (see DTC CHECK/CLEAR ). d. Start the engine and warm it up. e. Switch the ECM from normal mode to check mode using the Techstream. f. Drive the vehicle for more than 10 minutes. g. Read DTCs using the Techstream. OK: No DTC output. NG: Go to step 4 OK: CHECK FOR INTERMITTENT PROBLEMS (See CHECK FOR INTERMITTENT 4. CHECK VALVE TIMING (CHECK FOR LOOSE AND JUMPED TOOTH OF TIMING CHAIN) Fig. 41: Identifying Valve Timing Marks a. Remove the cylinder head cover LH and RH. b. Turn the crankshaft pulley, and align its groove with the timing mark "0" of the timing chain cover. c. Check that the timing marks of the camshaft timing gears and camshaft timing exhaust gears are at the positions shown in the illustration. OK: Timing marks on camshaft timing gears are aligned as shown in the illustration. NG: ADJUST VALVE TIMING (See REASSEMBLY ) OCV ON Soon after OCV switched from OFF to ON, engine idles roughly or stalls
2009 Toyota Tundra 2009 ENGINE PERFORMANCE Engine Control System (3UR-FBE) - Tundra
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