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P0420, P0430 THREE WAY CATALYST FUNCTION EC-221 < COMPONENT DIAGNOSIS > [VQ40DE] C D E F G H I J K L M A EC N P O NG >> Repair or replace. 4. CHECK IGNITION TIMING Check the following items. Refer to OK or NG OK >> GO TO 5. NG >> Follow the 5. CHECK FUEL INJECTOR 1. Stop engine and then turn ignition switch ON. 2. Check voltage between ECM terminals 21, 22, 23, 40, 41, 42 Diagram - ENGINE CONTROL SYSTEM -" OK or NG OK >> GO TO 6. NG >> Perform . 6. CHECK FUNCTION OF IGNITION COIL-I CAUTION: Do the following procedure in the place where ventilation is good without the combustible. Turn ignition switch OFF. 2. Remove fuel pump fuse in IPDM E/R to release fuel pressure. 3. Start engine. 4. After engine stalls, crank it two or three times to release all fuel 5. Turn ignition switch OFF. 6. Remove all ignition coil harness connectors to avoid the electri- 7. Remove ignition coil and spark plug of the cylinder to be 8. Crank engine for five 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 between the edge of the spark plug and grounded metal portion 11. Crank engine for about three seconds, and check whether spark is generated between the spark plug and the grounded metal CAUTION: • Do not approach to the spark plug and the ignition coil within 50cm. Be careful not to get an electrical shock • It might cause to damage the ignition coil if the gap of more than 17 mm is taken. Items Specifications Target idle speed 625 ± 50 rpm (in P or N position) Ignition timing 15 ± 5 ° BTDC (in P or N position) Battery voltage should exist. PBIB1172E Spark should be generated. BBIA0534E PBIB2325E |