Refer to service manuals i. This is accomplished with a professional level scan tool. This type of tools allows much greater access to information than the scan tools that simply read and clear codes. How do you troubleshoot P0480? Should there any problem within the circuit that will cause the fan to fail, the engine will heat up, causing it to overheat. However, they may also include an overheating engine when the vehicle is not in motion and reduced air conditioner efficiency.
Do you see any problem? This duty cycle corresponds to fan speed which correlates to the amount of air movement caused by the fan. Some vehicles require multiple drive cycles usually three for the service engine soon lamp to be illuminated. Clear codes using code reader and test drive. Current flow continues out of the fan motor on circuit 532 to relay 3. Common Symptoms As with other error codes, this code triggers the Check Engine light. This circuit is a series circuit which allows half speed operation for each fan since each fan motor will use half of the supplied battery power.
The unenergized relay 3 switch contacts allow current to flow to circuit 504. If the coolant temperature becomes too hot, it is possible that the engine could be damaged. If your are for a different car, select that vehicle series before searching for the diagnostic codes because not all used by one manufacture are used by the other makes. When the vehicle is not running, then there will be no air passing through the radiator. Unplug connectors at both ends. For the most part, the fuse box will be under hood somewhere or under dash refer to service manual for specific locations and specific procedures. Look up the other , please use the search box.
The high speed mode operates both fans at full speed by using a parallel circuit configuration. If your are for a different car, select that vehicle series before searching for the diagnostic codes because not all used by one manufacture are used by the other makes. Symptoms Symptoms will likely be limited to only service engine soon lamp illumination and a stored code. Battery acid will burn your skin!. When you see P0480 engine fault code on your engine code reader this description will help you. Refer to in Wiring Systems. Clear codes, and test drive vehicle.
The information contained on this site is presented for informational purposes only. Common Symptoms Aside from the illumination of the Check Engine light, the only obvious symptom of this error code is the increase of engine temperature as soon as the vehicle idles or stops, this is because the fans are not running to cool off the engine. This closes the relay switch and allows current to flow from the battery, through the switch contacts on circuit 409 to the Left Hand cooling fan. Perform basic electrical test as follows: Connect your red positive multimeter end to + battery post and your black ground multimeter end to - battery post and measure voltage. These are the low speed fan and the high speed fan operating modes. Refer to in Wiring Systems.
Does the scan tool indicate that this test passed? Next, they clear the codes and then take the vehicle for a test drive to duplicate the conditions when the code was set. How to Fix Repairs for this error code are pretty simple and straightforward, and of course can be derived from a thorough diagnosis. The currently selected is for the Buick makes. This provides power to the Right Hand cooling fan motor. Then, they conduct a visual inspection of the fan system.
Thankfully, auto makers had that in mind when adding a cooling fan s to the radiator, which in turn blows air through the fins of the radiator, mimicking the air that would typically pass through while driving at any speed. Common Misdiagnosis Technicians report the replacement of cooling fan motors without performing a thorough diagnosis results in many unsuccessful repairs. This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Look up the other , please use the search box. What are the common causes of code P0480? When your car is idling at a stop sign for a while there is no cool air passing through the fins of your radiator this means the temperature within the cooling system will rise.
Error Code P0480 refers to the basic circuit, and its related codes Error Code P0481 and Error Code P0482, relates to similar problem, but specific to different fan speed relays. Perform any necessary repairs, clear codes and test drive vehicle. . Then they test the fan control relay using a relay tested, or switch the relay using a good relay to test. The cooling fan system in this vehicle provides for two separate modes of operation. Start by measuring the fuel pressure and checking whether you have bright white-bluish spark at all four plugs. Got power to both rad fan relays.
Now Follow Step 11 Now Follow Step 13 10 Correct the faulty relay control circuit. Refer to in Wiring Systems. Does the scan tool indicate that this diagnostic has been run and passed? We are not responsible for any actions you take on your vehicle. Next, they clear the codes and then take the vehicle for a test drive to duplicate the conditions when the code was set. When the vehicle idles or stops, there will be no air to pass through the radiator. Refer to the thumbnail wiring schematic for terminal identification.