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Ask A. Penland Your Own Question
A. Penland
A. Penland, Ford Senior Master Technician, ASE
Category: Ford
Satisfied Customers: 6390
Experience:  ASE Master Certified, ASE Advanced Gasoline Engine Performance
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I have I problem where I replace the out fuse #2 in the

Customer Question

I have I problem where I replace the burnt out fuse #2 in the engine bay and it keeps blowing, the stareo, blower motor, power windows, windshield wipers and horn do not work, I have the code p1633 on my obd2 reader. I've read about the pcm could be faulty but I need to be sure. I'm trying to sell the van. 2000 Ford windstar
JA: Most vehicles have two fuse panels. Have you located both?
Customer: The one in the engine bay next to the battery
JA: Are you hoping to fix this yourself? What have you tried so far?
Customer: I've tried replacing the number 2 fuse but it keeps blowing
JA: Anything else you think the mechanic should know?
Customer: I've replace and had the dash cluster replaced because I have ancidently put the battery charger on 24 volts instead of 12
Submitted: 8 months ago.
Category: Ford
Expert:  A. Penland replied 8 months ago.

First please inspect the AC compressor clutch. We have seen the compressor clutch short out and blow the KAM fuse #2. Unplug the AC compressor clutch wiring connector and see if the fuse still blows.

Customer: replied 8 months ago.
I've just did, and it blew again
Expert:  A. Penland replied 8 months ago.

Disconnect the PCM and see if it still blows. It may be something inside the vehicle because Fuse #2 also power the FEM (Frontend Electronic Module) under the drivers side of the dash.

Customer: replied 8 months ago.
I've disconnected the pcm and the few blew again
Expert:  A. Penland replied 8 months ago.

Ok, the problem is not the PCM. Below is a picture of Connector C190 on the FEM under the drivers side of the dash to the left of the brake pedal. Unplug this connector and see if it still blows.

Customer: replied 8 months ago.
It still blowing out after I disconnected the connector
Expert:  A. Penland replied 8 months ago.

Ok. The problem is a short in the harness. Look at the diagram below and locate C100 to the passenger side of the brake booster under the hood. Disconnect the connector and check the fuse again.

Customer: replied 8 months ago.
Did that it blew again. Darn!
Expert:  A. Penland replied 8 months ago.

There is a short in the harness between fuse #2 and that connector.

Customer: replied 8 months ago.
I exposed the harness and it seems there's no broken wires or anything burnt
Expert:  A. Penland replied 8 months ago.

Find the wire from fuse #2 and trace it out. It is a sold red wire from the fuse to the PCM, the FEM and connector C100.

Customer: replied 8 months ago.
Yeah I traced it back to the connector, but I looks ok, could it be the connector itself?
Expert:  A. Penland replied 8 months ago.

Pull the red locking clip out and inspect the pins.

Customer: replied 8 months ago.
I found out that one red wire from ,the number 2 fuse has another red wire attached to it going up and somewhere else up the loom. And the c100 connector was completely fine. Do you any idea where that wire could lead or a wiring diagram?
Expert:  A. Penland replied 8 months ago.

See the diagram below. Fuse #2 is on the left side of the diagram.