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EC-408 < DTC/CIRCUIT DIAGNOSIS > [VQ35DE] P1217 ENGINE OVER TEMPERATURE >> Repair or replace malfunctioning part. 4. CHECK RADIATOR CAP Check radiator cap. Refer to . Is the inspection result normal? YES >> GO TO 5. NO >> Replace radiator cap. 5. CHECK THERMOSTAT Check thermostat. Refer to CO-22, "Removal and Installation" Is the inspection result normal? YES >> GO TO 6. NO >> Replace thermostat. Refer to CO-22, "Removal and Installation" 6. CHECK ENGINE COOLANT TEMPERATURE SENSOR EC-203, "Component Inspection" Is the inspection result normal? YES >> GO TO 7. NO >> Replace engine coolant temperature sensor. Refer to CO-24, "Removal and Installation" 7. CHECK MAIN 12 CAUSES If the cause cannot be isolated, check the following. *1: Turn the ignition switch ON. Engine Step Inspection item Equipment Standard Reference page OFF 1 • Blocked radiator • Visual No blocking — 2 • Coolant mixture • Coolant tester • MA-15, "FOR USA AND CANADA : Engine Oil Recom- (For NORTH AMERICA) • MA-17, "FOR MEXICO : Engine Oil Recommendation" (For MEXICO) 3 • Coolant level • Visual Coolant up to MAX level in 4 • Radiator cap • Pressure tester ON* 2 5 • Coolant leakage • Visual No leakage ON* 2 6 • Thermostat • Touch the upper and lower radiator hoses Both hoses should be hot CO-22, "Removal and In- ON* 1 7 • Cooling fan • CONSULT Operating EC-486, "Component Func- OFF 8 • Combustion gas leak- age • Color checker chemical tester 4 Gas analyzer Negative — ON* 3 9 • Coolant temperature gauge • Visual Gauge less than 3/4 when — • Coolant overflow to res- ervoir tank • Visual No overflow during driving OFF* 4 10 • Coolant return from res- ervoir tank to radiator • Visual Should be initial level in res- OFF 11 • Cylinder head • Straight gauge feeler gauge 0.1 mm (0.004 in) Maximum EM-95, "Inspection After 12 • Cylinder block and pis- tons • Visual No scuffing on cylinder |