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01
Bora1. 4t maintenance manual 2021
Case name: maintenance case for fast-moving 1. 4t engine cooling system failure
Car configuration: 2019 fast-moving 1. 4t with 1. 4 litres of turbine booster engines。
Fault: the owner of the vehicle reflects the water temperature warning light on the vehicle as it moves and the dashboard shows an excessive cooling fluid temperature。
Maintenance:
Fault diagnosis: using fast-moving 1. 4t maintenance manual 2019-2021, the connector reads the vehicle failure code and the engine control unit (ecu) reports “cooling fluid pump failure”. Refrigeration system inspection: the cooling fluid pumps and temperature sensors of the cooling system are checked according to the fast-moving 1. 4t maintenance manual 2019-2021. Refrigerated fluid pump inspection: confirm whether the cooling fluid pump is working properly and check whether the circuit connection and the pump body are damaged or blocked. Replacement of components: replacement of new cooling fluid pumps in accordance with the guidelines of the maintenance manual if the cooling fluid pump is damaged. Circuit inspection: check the circuit connection of the cooling fluid pump to ensure that there are no break or short circuits by reference to the circuit map in the fast-moving 1. 4t maintenance manual 2019-2021. Systems testing: replacement of cooling fluid pumps, removal of fault codes, system testing of engine control units to ensure normal operation of cooling systems. Engine testing: start the engine, check whether the cooling fluid temperature is normal and confirm that the water temperature warning light is not on. Road test certificates: a road test with the owner of the vehicle to confirm that the cooling system is working properly and that there are no anomalies in the vehicle's operation。
Summary of cases:
Engine cooling system malfunctions may be caused by cooling fluid pumps or circuit problems. The maintenance will require a comprehensive application of the maintenance manual and a comprehensive inspection and maintenance of the cooling system. Replacement of cooling fluid pumps and inspection of circuit connections are important steps in addressing cooling system failures. System tests and road test certificates are important elements in confirming the effectiveness of maintenance and need to ensure the safety of vehicle performance and movement。
