Ok..when diagnosing problems, these acronyms can get confusing. I know where the PCM, BCM and IPM is located, but....where is the FCM? Is it the same as the BCM or the IPM? or is it a completely different circuit?


Thanks in advance.

 

FCM is the module attached to the front of the fuse box. I believe it is same as the IPM, the name depends on the year of the vehicle.

 

What are you trying to fix?

 

My wiper washer isn't working. I checked both the washer motors, they're fine . The switch for the washer is fine as I had taken it out and placed it into another Caravan and it worked. I swapped the BCM with one I got from the an 02 that a buddy of mine gave me that I know works. It's fine but still no washer. I am however getting a voltage reading of 5 volts from the washer connector but still nothing is coming out of the washer. And I know there is no blockage in the line. So I'm stuck thinking that it may be a connector problem (under fuse box) but I don't see any corrosion on the connector. And if it's the FCM then I want to make sure that it's what I'm actually looking at.

Is this the module that when you lift out the fuse box, it actually comes with it?

 

What exactly doesn't work? The Windshield or Liftgate pump or the both?
The pump buzzing?

 

IPM supplies power, FCM has the control via grounding the circuit.

Fuse 33 powers both rear and front. OR/PK front....VT/PK rear. Those should be 12V.

BR is front control. BR/YL is rear control.

Assuming a 2003? Yes the shiny box held to the front of the IPM with 4 Torx screws is the FCM

 

Thanks TN, I'll check it out.