Wednesday, November 16, 2011

Fixing the Saturn Vehicle F5 Issue (No power in fusebox to chime, dome light, fuel pump)


[COLOR="red"]1999 Saturn SC1
130,000 Miles[/COLOR]

Have been doing a lot of research on an issue that has plagued me for a while now. My fuel pump stopped working and after testing the pump and finding it was receiving no power, the lines were traced to the Instrument Panel Junction Block (IPJB). Knowing the source of the issue gave me better search options and led me here to this site where many other Saturn owners have had the exact same issue, all diagnosed as an F5 issue (F5 being the connection point where power is sent to a particular series of fuses and relays including the Chime, Dome Light, and Fuel Pump). I took apart the console inside to access my IPJB and examined the F5. I found the F5, took pictures so others know what they're looking for, but unfortunately I do not know how to fix the problem. One user suggested re-springing the F5 but I honestly don't know what that means. I'm hoping this thread can serve as a place for all users to suggest how they fix their F5 problems.

The Console Torn Apart



The right side of the IPJB


(The Fuse Box is held on with tabs, slide a screw driver under the metal part in the red box to detach the tab... slide it slowly to avoid breaking anything. [B]NOTE:[/B] It is not necessary to remove the fuse box entirely, but if you wanted to, or if it helps you gain better access at the F5 pin that's what holds it on.)

The Backside of the Fuse Panel we care about (When facing the backside of the fuses there are 3 panels, this panel is nearest to the engine, or the farthest left when facing the wires. The panel is removed by loosening the bolt in the middle of it. The bolt does not remove, loosen till it spins freely and then wiggle the panel/plug as a whole to pull off.)



The fuse Panel contains tiny letters and numbers, this is how we find which is the F5, or use the above diagram.
The Large gauge red wire that runs to the F5 supplies the power to the Chime, Dome Light, and Fuel Pump (possibly others?)

The port side of the fuse panel



The F5 Pin shows signs signs of problems around it.


Several suggestions to fix include:
Using a scotch pad to clean up pin and connectors.
Re-springing the connector (shown in the 4th picture, the port side of the panel). I don't know exactly what this means.

Cleaning the connectors has at least got my car running again for the time being, but a more permanent solution is still sought. Any and all suggestions and/or critiques are welcome and appreciated.

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