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EC-286 < DTC/CIRCUIT DIAGNOSIS > [VQ35DE] P0420, P0430 THREE WAY CATALYST FUNCTION Is the inspection result normal? YES >> GO TO 6. NO >> Perform . 6. CHECK FUNCTION OF IGNITION COIL-I CAUTION: Perform the following procedure in a place with no combustible objects and good ventilation. 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 2 or 3 times to release all fuel pressure. 5. Turn ignition switch OFF. 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: • During the operation, always stay 0.5 m (19.7 in) or more away from the spark plug and the ignition coil. Be careful • It might cause to damage the ignition coil if the gap of more than 17 mm (0.66 in) is taken. 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 known-good spark plug. 3. Crank engine for approximately 3 seconds, and recheck whether spark is generated between the spark ECM Voltage + – Connector Terminal Connector Terminal F7 1 E16 112 Battery voltage 3 29 30 31 32 Spark should be generated. JMBIA0066GB |