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EC-354 < COMPONENT DIAGNOSIS > [VQ35HR] P1217 ENGINE OVER TEMPERATURE >> Repair or replace malfunctioning part. 4. CHECK RADIATOR CAP Check radiator cap. Refer to CO-11, "RADIATOR CAP : Inspection" Is the inspection result normal? YES >> GO TO 5. NO >> Replace radiator cap. 5. CHECK THERMOSTAT Check thermostat. Refer to Is the inspection result normal? YES >> GO TO 6. NO >> Replace thermostat 6. CHECK ENGINE COOLANT TEMPERATURE SENSOR EC-174, "Component Inspection" Is the inspection result normal? YES >> GO TO 7. NO >> Replace engine coolant temperature sensor. 7. CHECK MAIN 12 CAUSES If the cause cannot be isolated, check the following. *1: Turn the ignition switch ON. *2: Engine running at 3,000 rpm for 10 minutes. *3: Drive at 90 km/h (56 MPH) for 30 minutes and then let idle for 10 minutes. *4: After 60 minutes of cool down time. Engine Step Inspection item Equipment Standard Reference page OFF 1 • Blocked radiator • Visual No blocking — 2 • Coolant mixture • Coolant tester 50 - 50% coolant mixture — 3 • Coolant level • Visual Coolant up to MAX level in 4 • Radiator cap • Pressure tester 107 kPa (1.1 kg/cm 2 , 16 psi) (Limit) CO-11, "RADIATOR CAP ON* 2 5 • Coolant leaks • Visual No leaks ON* 2 6 • Thermostat • Touch the upper and lower radiator hoses Both hoses should be hot ON* 1 7 • Cooling fan • CONSULT-III Operating EC-443, "Component OFF 8 • Combustion gas leak • 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 OFF 11 • Cylinder head • Straight gauge feeler gauge 0.1 mm (0.004 in) Maxi- 12 • Cylinder block and pis- tons • Visual No scuffing on cylinder |