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P0420 THREE WAY CATALYST FUNCTION EC-293 < DTC/CIRCUIT DIAGNOSIS > [MR20DD] C D E F G H I J K L M A EC N P O 7. Remove ignition coil and spark plug of the cylinder to be checked. Refer to . 8. Crank engine for 5 seconds or more to remove combustion gas in the cylinder. 9. Connect spark plug and harness connector to ignition coil. 10. Fix ignition coil using a rope etc. with gap of 13 - 17 mm (0.52 - 0.66 in) between the edge of the spark plug and grounded metal 11. Crank engine for about 3 seconds, and check whether spark is generated between the spark plug and the grounded metal por- CAUTION: • Do not approach to the spark plug and the ignition coil within 50 cm (19.7 in). Be careful not to get an electrical • It might cause to damage the ignition coil if the gap of more than 17 mm (0.66 in) is taken. NOTE: Is the inspection result normal? YES >> GO TO 10. NO >> GO TO 7. 7. CHECK FUNCTION OF IGNITION COIL-2 1. Turn ignition switch OFF. 2. Disconnect spark plug and connect a known-good spark plug. 3. Crank engine for about 3 seconds, and recheck whether spark is generated between the spark plug and Is the inspection result normal? YES >> GO TO 8. NO >> Check ignition coil, power transistor and their circuits. Refer to . 8. CHECK SPARK PLUG Check the initial spark plug for fouling, etc. Is the inspection result normal? YES >> Replace spark plug(s) with standard type one(s). For- spark plug type, refer to . NO >> Repair or clean spark plug. Refer to . Then GO TO 9. 9. CHECK FUNCTION OF IGNITION COIL-3 1. Reconnect the initial spark plugs. 2. Crank engine for about 3 seconds, and recheck whether spark is generated between the spark plug and Is the inspection result normal? YES >> INSPECTION END NO >> Replace spark plug(s) with standard type one(s). For spark plug type, refer to . 10. CHECK FUEL INJECTOR JMBIA0066GB Spark should be generated. SEF156I Spark should be generated. |