A mileage of about 12,000 km, equipped with K12 engine Changan Suzuki Big Dipper. Customers report: car cooling fan doesn't operate, leading to the water temperature is too large, the engine is bursting water pipes.

Check the analysis: the maintenance personnel get the automobile, the 1st substitute of the new water pipes, and add a very good coolant, after which start out the engine and carry on to operate for a while, coolant temperature gradually greater till the temperature is also substantial, the fan still work, indicating that cooling you'll find complications with all the program.

Then, the servicing personnel of your automobile cooling procedure circuit is checked. According on the circuit diagram, we can see the engine management unit voltage signal acquisition coolant V45.06 CK100 key programmer temperature sensor to be able to decide the level in the coolant temperature. Once the temperature is too higher, the engine management unit controls the cooling fan relay, cooling fan operation, which reduces the engine coolant temperature.

Maintenance personnel in the engine coolant temperature is as well high, unplug the cooling fan connector, test accessibility lamp cooling fan power measurement terminal, never observed energy. Subsequently, the servicing workers take a fantastic cooling fan connector, the battery back-end, within the left front suspension, locate the cooling fan relay, the relay testing. Initially, load shorting relay connector at the two ends with the wire, you may see the fan is working, indicating BMW ICOM the line is typical. The inspection, servicing personnel discovered traces of rust relays have water, then get rid of the relay situation, obviously see the relay inner corrosion leading to poor do the job, bringing the bring about recognized.

Troubleshooting: Replacing the cooling fan relay, commence the car, when the coolant reaches a particular temperature, the cooling fans are working, troubleshooting.

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