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EC-434 < DTC/CIRCUIT DIAGNOSIS > [VQ35DE] IGNITION SIGNAL Is the inspection result normal? YES >> Check intermittent incident. Refer to GI-42, "Intermittent Incident" . NO >> Replace malfunctioning ignition coil with power transistor. Refer to Component Inspection (Ignition Coil with Power Transistor) INFOID:0000000009651295 1. CHECK IGNITION COIL WITH POWER TRANSISTOR-I 1. Turn ignition switch OFF. 2. Disconnect ignition coil harness connector. 3. Check resistance between ignition coil terminals as per the following. Is the inspection result normal? YES >> GO TO 2. NO >> Replace malfunctioning ignition coil with power transistor. Refer to 2. CHECK IGNITION COIL WITH POWER TRANSISTOR-II CAUTION: Perform the following procedure in a place with no combustible objects and good ventilation. Turn ignition switch OFF. 2. Reconnect all harness connectors disconnected. 3. Remove fuel pump fuse in IPDM E/R to release fuel pressure. 4. Start engine. 5. After engine stalls, crank it 2 or 3 times to release all fuel pressure. 6. Turn ignition switch OFF. 7. Remove all ignition coil harness connectors to avoid the electrical discharge from the ignition coils. 8. Remove ignition coil and spark plug of the cylinder to be checked. 9. Crank engine for 5 seconds or more to remove combustion gas in the cylinder. 10. Connect spark plug and harness connector to ignition coil. 0.66 in) between the edge of the spark plug and grounded metal 12. 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 >> INSPECTION END NO >> Replace malfunctioning ignition coil with power transistor. Refer to Terminal No. (Polarity) Resistance Ω [at 25 ° C (77 ° F)] 1 and 2 Except 0 or ∞ 1 and 3 Except 0 2 and 3 Spark should be generated. JMBIA0066GB |