Where is the fan relay located in the Sylphy?
4 Answers
The fan relay in the Sylphy is located next to the battery in the engine compartment. Here is some extended information: 1. The engine control ECU uses signals from the coolant temperature sensor and the air conditioning switch. 2. It controls the fan motor circuit through the fan relay to regulate the fan operation. The specific steps to access the Sylphy's fan relay are as follows: 1. Open the driver's side door of the Nissan Sylphy. 2. Pull the hood release lever located on the left side of the driver's leg area. 3. Lift up the hood of the Nissan Sylphy. 4. Secure the hood with the support rod. 5. The fan relay of the Nissan Sylphy is located next to the battery in the engine compartment.
As an experienced Sylphy owner, I replaced the fan relay myself last time. When you open the hood and look towards the battery, there's a labeled diagram on the back of the left fuse box cover. The relays are arranged by function. In the 14th generation, it's usually the small black square marked 'RADIATOR FAN' – remember to disconnect the battery negative terminal when removing/installing. For the new Sylphy, it might be in the cabin fuse box under the dashboard, requiring you to crouch down to locate it. Extra reminder: A stuck relay can cause the fan to run continuously and drain the battery, a common summer malfunction. If you can't find it by following the diagram, I recommend going directly to a repair shop to check the circuit diagram.
Last time my boyfriend's Sylphy's fan wasn't working, I helped him look for the relay in the engine compartment. Focus on two locations: the black square box near the battery (older models) or the fuse box under the steering wheel (newer models). The relay is about the size of a matchbox and is often labeled COOLING FAN. Here's a little trick: have a friend turn on the AC, and if you feel a slight vibration when touching the relay, it means it's working. If you find blackened and burnt contacts, it needs to be replaced. The part costs around 50 yuan at the dealership, but labor can be expensive. If you're handy, you can do it in about ten minutes. Just make sure not to work when the engine is hot to avoid burns.
A 20-year experienced mechanic shares a secret with you: The Sylphy fan relay is concentrated in the right front fuse box of the engine compartment. There are slight differences in location across different model years: the classic version is next to the air filter box, the 14th generation is attached to the battery bracket, and the 2021 model has been moved above the driver's left foot. Judging its condition is simple: remove it and shake to listen for any loose internal parts, then use a multimeter to measure the resistance between pins 85/86, which should be between 60-90Ω. Common failure reasons include contact welding due to long-term high load and increased burden from dust accumulation on the heat sink. When replacing it yourself, be sure to disconnect the negative cable to prevent short circuits.
