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P0300, P0301, P0302, P0303, P0304, P0305, P0306 MISFIRE EC-257 < COMPONENT DIAGNOSIS > [VQ37VHR] C D E F G H I J K L M A EC N P O 3. Make sure that each circuit produces a momentary engine speed drop. Is the inspection result normal? YES >> GO TO 9. NO >> GO TO 4. 4. CHECK FUNCTION OF FUEL INJECTOR-I 1. Start engine and let it idle. 2. Listen to each fuel injector operating sound. Is the inspection result normal? YES >> GO TO 5. NO >> Perform trouble diagnosis for FUEL INJECTOR, refer to . 5. 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 (1) in IPDM E/R (2) to release fuel pres- 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 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. Is the inspection result normal? YES >> GO TO 9. NO >> GO TO 6. Clicking sound should be heard. PBIB3332E Spark should be generated. JMBIA0021ZZ JMBIA0066GB |