|
|
EC-246 < COMPONENT DIAGNOSIS > [VQ35HR] P0300, P0301, P0302, P0303, P0304, P0305, P0306 MISFIRE Is the inspection result normal? YES >> GO TO 7. NO >> Check ignition coil, power transistor and their circuits. Refer to . 7. CHECK SPARK PLUG Check the initial spark plug for fouling, etc. 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 8. 8. CHECK FUNCTION OF IGNITION COIL-III 1. Reconnect the initial spark plugs. 2. Crank engine for about 3 seconds, and recheck whether spark is generated between the spark plug and Is the inspection result normal? YES >> INSPECTION END NO >> Replace spark plug(s) with standard type one(s). For spark plug type, refer to . 9. CHECK COMPRESSION PRESSURE Check compression pressure. Refer to . Is the inspection result normal? YES >> GO TO 10. NO >> Check pistons, piston rings, valves, valve seats and cylinder head gaskets. 10. CHECK FUEL PRESSURE 1. Install all removed parts. 2. Check fuel pressure. Refer to . Is the inspection result normal? YES >> GO TO 12. NO >> GO TO 11. 11. DETECT MALFUNCTIONING PART Check fuel hoses and fuel tubes for clogging. Is the inspection result normal? YES >> Replace “fuel filter and fuel pump assembly”. NO >> Repair or replace malfunctioning part. 12. CHECK IDLE SPEED AND IGNITION TIMING Check idle speed and ignition timing. EC-12, "BASIC INSPECTION : Special Repair Requirement" For specification, refer to . Is the inspection result normal? YES >> GO TO 13. NO >> Follow the EC-12, "BASIC INSPECTION : Special Repair Requirement" 13. CHECK A/F SENSOR 1 INPUT SIGNAL CIRCUIT 1. Turn ignition switch OFF. 2. Disconnect corresponding A/F sensor 1 harness connector. SEF156I Spark should be generated. |