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EC-310 < DTC/CIRCUIT DIAGNOSIS > [VK56VD] P0420, P0430 THREE WAY CATALYST FUNCTION 6. Remove all ignition coil harness connectors to avoid the electrical discharge from the ignition coils. 7. Remove ignition coil and spark plug of the cylinder to be checked. 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 approximately 3 seconds, and check whether spark is generated between the spark plug and the grounded CAUTION: • Never place the spark plug and the ignition coil within 50 cm (19.7 in) each other. Be careful not to get an electrical • It might damage the ignition coil if the gap of more than 17 mm (0.66 in) is made. Is the inspection result normal? YES >> GO TO 10. NO >> GO TO 7. 7. CHECK FUNCTION OF IGNITION COIL-II 1. Turn ignition switch OFF. 2. Disconnect spark plug and connect a non-malfunctioning spark plug. 3. Crank engine for approximately 3 seconds, and recheck whether spark is generated between the spark 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. Then GO TO 9. 9. CHECK FUNCTION OF IGNITION COIL-III 1. Reconnect the initial spark plugs. 2. Crank engine for approximately 3 seconds, and recheck whether spark is generated between the spark Is the inspection result normal? YES >> INSPECTION END Spark should be generated. JMBIA0066GB Spark should be generated. SEF156I Spark should be generated. |