The cooling fan of a 2007 Dodge Caliber is an essential component for proper engine operation. Without it, the engine can overheat and cause severe damage. In this article, we will discuss the wiring diagram of the cooling fan and its components to help you diagnose and repair any issues that may arise.
How Does the Cooling Fan Work?
The cooling fan in a 2007 Dodge Caliber is designed to turn on automatically when the engine reaches a certain temperature. This is achieved through a series of electrical components that work together to regulate the temperature of the engine.
The engine coolant temperature sensor (ECT) is responsible for monitoring the temperature of the engine. When the engine reaches a predetermined temperature, the ECT sends a signal to the powertrain control module (PCM), which then sends a signal to the cooling fan relay. This signal tells the cooling fan relay to turn on the cooling fan.
Once the cooling fan is turned on, it draws air through the radiator, which in turn cools the engine. The fan will continue to run until the engine cools down to a certain temperature, at which point it will turn off.
Wiring Diagram and Components
The wiring diagram for the cooling fan in a 2007 Dodge Caliber is relatively simple. The cooling fan relay is located in the power distribution center (PDC) under the hood of the vehicle. The PDC is essentially the fuse box for the vehicle’s electrical system.
The cooling fan relay is responsible for switching power to the cooling fan on and off. The relay is controlled by the PCM through the use of a signal wire. When the PCM sends a signal to the relay, it allows power to flow to the cooling fan. The relay is typically a black box with four or five terminals.
The cooling fan motor is located behind the radiator and is attached to a plastic shroud. The shroud is designed to direct airflow through the radiator and across the engine. The fan motor is typically a three-wire unit, with one wire for power, one for ground, and one for the signal from the cooling fan relay.
Table 1: Cooling Fan Relay Pinout
| Pin | Color | Description |
|---|---|---|
| 1 | Black/Orange | Ground |
| 2 | Signal from PCM | |
| 3 | Dark Green | Power to Cooling Fan |
| 4 | N/A | Not Used |
FAQ
How do I know if my cooling fan is working?
The easiest way to tell if your cooling fan is working is to turn on the air conditioning. The cooling fan should turn on when the air conditioning is turned on. If the fan does not turn on, there may be an issue with the cooling fan relay or the fan motor itself.
What should I do if my cooling fan isn’t working?
If your cooling fan isn’t working, there are a few things you can do to diagnose and repair the issue. First, check the fuses and relays in the PDC to ensure they are all working properly. If the fuses and relays are good, then you may need to replace the cooling fan motor or the cooling fan relay.
Can I drive my vehicle if the cooling fan isn’t working?
We do not recommend driving your vehicle if the cooling fan is not working. Without the cooling fan, the engine can overheat and cause severe damage. If you must drive the vehicle, be sure to keep an eye on the temperature gauge and pull over immediately if it starts to get too hot.
How much does it cost to replace a cooling fan?
The cost to replace a cooling fan in a 2007 Dodge Caliber can vary depending on the location of the repair and the cost of the parts. On average, you can expect to pay between $300 and $500 for a cooling fan replacement.
