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SYSTEM SYMPTOM Reference page HARD/NO ST AR T/REST AR T (EXCP . HA) ENGINE ST ALL HESIT A TION/SURGING/FLA T SPOT SP ARK KNOCK/DET ONA TION LACK OF POWER/POOR ACCELERA TION HIGH IDLE/LOW IDLE ROUGH IDLE/HUNTING IDLING VIBRA TION SLOW/NO RETURN T O IDLE OVERHEA TS/W A TER TEMPERA TURE HIGH EXCESSIVE FUEL CONSUMPTION EXCESSIVE OIL CONSUMPTION OVERCOOLS OVERCHARGING BA TTER Y DEAD (UNDER CHARGE) Warranty symptom code AA AB AC AD AE AF AG AH AJ AK AL AM 1P 1X HA Fuel Fuel tank 5 5 Fuel piping 2 5 5 2 5 5 5 — Vapor lock Valve deposit 5 5 5 5 5 5 5 Poor fuel (Heavy weight gasoline, Low Air Air duct 5 5 5 5 5 5 5 Air cleaner Air leakage from air duct 5 5 5 5 5 Throttle body, Throttle wire Air leakage from intake manifold/ — Cranking Battery 1 1 1 1 1 1 1 1 1 EL section Alternator circuit Starter circuit 3 Theft warning circuit PNP switch 4 Drive plate 6 Engine Cylinder head 6 6 6 6 6 6 6 6 Cylinder head gasket 4 6 Cylinder block Piston Piston ring Connecting rod Bearing Crankshaft 6 Valve Timing chain 6 6 6 6 6 6 6 6 6 Camshaft 5 5 5 5 5 5 5 5 Intake valve 6 6 6 6 6 6 6 6 6 Exhaust valve Exhaust Exhaust manifold/Tube/Muffler/Gasket 5 5 5 5 5 5 5 5 Three way catalytic converter Lubrication Oil pan/Oil strainer/Oil pump/Oil filter/Oil 5 5 5 5 5 5 5 5 5 Oil level (Low)/Filthy oil Cooling Radiator/Hose/Radiator filler cap 5 5 5 5 5 4 5 Thermostat 5 5 2 Water pump Water gallery Cooling fan 5 5 2 EC section Coolant level (low)/Contaminated coolant IVIS (Infiniti Vehicle Immobilizer System — NATS) 1 1 1 - 6: The numbers refer to the order of inspection. GI MA EM LC FE AT PD FA RA BR ST RS BT HA EL IDX TROUBLE DIAGNOSIS — General Description Symptom Matrix Chart (Cont’d) EC-101 |