Speedometer/Odometer OOC
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Fleet Mechanic
Joined: Oct 2006
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From: North Florida
Speedometer/Odometer OOC
When I won't be driving my 95 F150 for an extended period of time, I sometimes pull fuse #8 to keep from draining the battery. Upon reinstalling the fuse last time, my odometer came on then went blank again and since then I have had no speedometer or odometer. I checked the other fuse that's associated with that circuit (#18 I think) and it was good. Does anyone have any idea what else to check? Thanks for any help.
Postmaster
Joined: Nov 2011
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From: SW Florida
Do you have a meter? I'd pull the gauges out and check for voltage on the PSOM (the Programmable Speedometer/Odometer Module) power input. Got power there, PSOM is dead. No power, move downstream to next component and keep checking.
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Fleet Mechanic
Joined: Oct 2006
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From: North Florida
Thanks for the reply Dixie460. I have never had the gauges out. Can you help me on where to check for power to the PSOM? Yes, I have a multi meter.
Postmaster
Joined: Nov 2011
Posts: 3,533
Likes: 17
From: SW Florida
Check out the schematic below, courtesy of Steve83:
http://www.supermotors.net/getfile/9...om-fseries.jpg
You should have power (with reference to chassis ground) on circuit 54 (Light Green/Violet) and circuit 296 (White/Purple) with ignition switch ON.
This would be on the PSOM connector at the back of the gauge cluster. There's 3 electrical connectors, the PSOM is the small square one in the center.
http://www.supermotors.net/getfile/9...om-fseries.jpg
You should have power (with reference to chassis ground) on circuit 54 (Light Green/Violet) and circuit 296 (White/Purple) with ignition switch ON.
This would be on the PSOM connector at the back of the gauge cluster. There's 3 electrical connectors, the PSOM is the small square one in the center.
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