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EC-362 < DTC/CIRCUIT DIAGNOSIS > [VQ35DE] P1217 ENGINE OVER TEMPERATURE >> Repair or replace malfunctioning part. 4. CHECK RADIATOR CAP Check radiator cap. Refer to MA-23, "RADIATOR CAP : Inspection" . Is the inspection result normal? YES >> GO TO 5. NO >> Replace radiator cap. Refer to 5. CHECK THERMOSTAT Check thermostat. Refer to Is the inspection result normal? YES >> GO TO 6. NO >> Replace thermostat. Refer to 6. CHECK ENGINE COOLANT TEMPERATURE SENSOR EC-184, "Component Inspection" Is the inspection result normal? YES >> GO TO 7. NO >> Replace engine coolant temperature sensor. Refer to 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 MA-19, "ENGINE COOLANT : Inspection" 3 • Coolant level • Visual Coolant up to MAX level in MA-19, "ENGINE COOL- 4 • Radiator cap • Pressure tester MA-23, "RADIATOR CAP : Inspection" ON* 2 5 • Coolant leakage • Visual No leakage MA-19, "ENGINE COOL- ON* 2 6 • Thermostat • Touch the upper and lower radiator hoses Both hoses should be hot ON* 1 7 • Cooling fan • CONSULT Operating EC-436, "Component 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 MA-19, "ENGINE COOL- OFF* 4 10 • Coolant return from res- ervoir tank to radiator • Visual Should be initial level in MA-19, "ENGINE COOL- 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 |