6. WHEN HYDRAULIC OIL TEMPERATURE WARNING LAMP LIGHTS UP 6. WHEN HYDRAULIC OIL TEMPERATURE 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. MCU HYDRAULIC OIL TEMPERATURE SENDER 41 CD-1 CN-51 5-28 YES Resistance YES between CD-1 (1, 2) is in range of 130~150Ω? Does display go Starting switch : ON NO off when Disconnect CD-1 disconnect CD-1? YES Resistance Starting switch : ON between CN-51 Engine : Start NO (41) and GND is 0~1Ω?
Starting switch : OFF NO Disconnect CN-51 Cause Remedy High temperature Defective temp sensor Short circuit Defective MCU Check hydraulic oi temperature (100˚C±2˚C) , Replace Replace Check and repair Replace 2 1 C