Where are the cooling fan relays on a radiator?
The electric cooling fan (s) are controlled by the Body Control Module (BCM) which enables the fans through the PCM. The PCM enables the ground path for the three cooling fan relays. The relay (s) are used to control the high current flow to power the cooling fan motors.
What to do if your cooling fan relay is failing?
For this reason, if you suspect that your cooling fan, or relay, may possibly be having issues, have the vehicle diagnosed by a professional technician, such as one from YourMechanic. They will be able to look over your vehicle and replace your cooling fan relay if necessary.
Why is my radiator cooling fan not working?
The radiator cooling fans will not come and it causes overheating. It may be the fan relay or switch (whatever it is called). My problem is trying to locate it. Is it near the battery or where is it so I can install the one sold to me by Autozone automotive parts store.
What are the signs of a bad cooling fan?
Common signs include the engine running hot and cooling fans either not functioning or running all the time. 1. Engine running hot 2. Cooling fans do not function 3. Cooling fans stay on at all times Most modern vehicles use electric cooling fans to help pull air through the radiator so that it can keep the engine cool.
The electric cooling fan (s) are controlled by the Body Control Module (BCM) which enables the fans through the PCM. The PCM enables the ground path for the three cooling fan relays. The relay (s) are used to control the high current flow to power the cooling fan motors.
How does the mode control relay work on a radiator?
The relay (s) are used to control the high current flow to power the cooling fan motors. When minimum cooling is required, the BCM will command the PCM to energize cooling fan relay #1 and since both fans are connected in series through the Mode Control relay, both fans will operate at low speed.
What happens when a radiator relay goes bad?
A faulty or broken relay cannot deliver power to the cooling fans. In turn, the unpowered fans won’t run, leaving the radiator to its own devices. Deprived of the helpful influx of air from the cooling fans, the radiator cannot remove as much heat as it usually does.
What are the symptoms of a bad cooling fan relay?
1. Engine running hot One of the first symptoms commonly associated with a bad or failing cooling fan relay is an engine that runs hot or overheats. If you notice that your engine is running at higher temperatures than normal, that may be a sign that the relay is not functioning properly.
Do you need a relay kit for a cooling fan?
A relay kit, our part number CCFKRL, will include everything you need to properly wire up your electric cooling fans, with the exception of additional wiring needed to complete all of the circuits. The first part of the installation is to install the electric fan to your radiator, and remove the mechanical fan.
How to disconnect the bottom of a fan relay?
To disconnect the bottom, use a flat screwdriver to release the tabs all around it. With the bottom off, look for the green wire going to the fan relay. Being very careful not to cut into any wires, use a utility knife to cut through the tape holding the large wire loom closed leading into the fuse box.
When does the first relay turn on the fan?
1ST RELAY TURNS ON FAN WHEN TEMP SWITCH IS ACTIVATED 5 AMP FUSE SIGNAL CIRCUIT 12V SWITCHED (IGNITION OR FUSE PANEL) Power “ON” when key is in the “RUN” position. 86 87 30 85 Optional override switch turns on fan, by-passing temp sensor and A/C relay.
What’s the circuit diagram for a cooling fan?
The parts in black are the stock wiring for the cooling fan. The parts in red are what you’re adding to make this work. For those of you that know how to read a circuit diagram, this should be all you need to know. Make sure you get the right green wire and go make it happen. This is what you’ll need to make this happen.
Where is the fuse box on a Pontiac Grand Prix?
Pontiac Grand Prix (2004-2008)…>>. Cigar lighter / power outlet fuse in the Pontiac Grand Prix is located in the Instrument panel fuse box (see fuse “CIG LTR”). It is located in the glovebox, behind the cover on the right.
When did the Pontiac Grand Prix come out?
In this article, we consider the sixth-generation Pontiac Grand Prix, produced from 1997 to 2003. Here you will find fuse box diagrams of Pontiac Grand Prix 1997, 1998, 1999, 2000, 2001, 2002 and 2003, get information about the location of the fuse panels inside the car, and learn about the assignment of each fuse (fuse layout) and relay.