Introduction applicable vehicles some vehicles equipped with 1mz–fe (v6) engines without vvtI may exhibit a rough idle and/or a m.I.L. “on” condition with a diagnostic trouble code or codes for misfire caused by an improperly operating ignition coil assembly. Production changes have been implemented to prevent this condition from occuring. S 2001 model year japan built camry vehicles equipped with 1mz–fe engines (v6). S 1998–2001 model year north american built camry vehicles equipped with 1mz–fe engines (v6) s 1998 – 1999 model year avalon vehicles. S 1998 – 2000 model year sienna vehicles. S 1999 – 2002 model year solara vehicles equipped with 1mz–fe engines produced before the production change effective vin shown below. Repair procedure 1. Confirm if vehicle is currently misfiring, running rough or hesitating. If yes – go to step 2.
If no – review freeze frame data and attempt to operate vehicle under similar driving conditions – see notes below for information that makes it more likely to duplicate misfire. Is the cylinder(s) identified by the dtc(s) misfiring? If yes – go to step 3. If no – follow normal diagnostics for applicable dtc in technical information system (tis) in applicable repair manual: diagnostics: sfi: p030#. 3. Swap suspect ignition coil(s) from cylinder that is misfiring to cylinder that is not misfiring. 4. Using diagnostic tester, confirm that misfire is now occurring in cylinder that has suspect ignition coil(s). Has misfire followed swapped ignition coil(s)? If yes – replace ignition coil(s) and go to step 5. If no – follow normal diagnostics in technical information system (tis) for applicable repair manual: diagnostics: sfi: p030#. 5. Confirm misfire has been eliminated (0% at all times) using diagnostic tester while engine is idling.