3. WHEN COOLANT OVERHEAT WARNING LAMP LIGHTS UP 3. WHEN COOLANT OVERHEAT WARNING LAMP LIGHTS UP (engine is started) · Before disconnecting the connector, always turn the starting switch OFF. · Before carrying out below procedure, check all the related connectors are properly inserted. · After checking, insert the disconnected connectors again immediately unless otherwise specified. KEY OFF ECU CN-93 5-25 YES Resistance YES between water temp sensor (1,2) is in range of 120~150Ω? NO Does display go Disconnect CD-30 off when disconnect water temp sensor? Starting switch : ON YES Engine : Start Resistance between CN-93 NO (16) and (28) is 0~1Ω?
NO Cause Remedy Coolant overheat (115˚C±2˚C) Defective temp sensor Short circuit in wiring harness Defective cluster Check engine cooling system Replace Repair or replace (after clean) Replace 16 28 WATER TEMPERATU SENSOR 1 C 2 1 2 C