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A HINT: CHANGE IN DATA LIST WHEN NUMBER OF STEPS IS INCREASED USING CONTROL THE EGR STEP POSITION ACTIVE TEST Engine Idle becomes rough MAP Pressure rises Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information PROCEDURE 1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO P0401) (a) Connect the Techstream to the DLC3. (b) Turn the ignition switch to ON. (c) Turn the Techstream on. (d) Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. (e) Read the DTCs. Result RESULT PROCEED TO DTC P0401 is output A DTC P0401 and other DTCs are output B HINT: If any DTCs other than P0401 are output, perform troubleshooting for those DTCs first. B GO TO DTC CHART 2. PERFORM ACTIVE TEST USING TECHSTREAM (OPERATE EGR VALVE) (a) Connect the Techstream to the DLC3. 1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0401; Exhaus... |