No Power @ OBDII Connector
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FTE Chapter Leader
Joined: May 2006
Posts: 12,317
Likes: 1,298
From: Central Mississippi
No Power @ OBDII Connector
The patient: 96 F-150, 5.0 auto, 2-WD with flashing check engine light.
The tool: Inova 1403 obd 1 & 2 scanner.
Scanner should power up when connected to port w/ key off. (It does on other vehicles)
User manual sez to check fuses. (Done, all good)
Port cap intact, all pins clean & shiny. Wiggle test of harness behind port does nothing. Fender grounds look good, but batt cable clamps (repacement type) aren't so hot. Engine turns over fine & runs.
Underhood harnesses are good, no hatchet job repairs.
Any direction would be appreciated.
The tool: Inova 1403 obd 1 & 2 scanner.
Scanner should power up when connected to port w/ key off. (It does on other vehicles)
User manual sez to check fuses. (Done, all good)
Port cap intact, all pins clean & shiny. Wiggle test of harness behind port does nothing. Fender grounds look good, but batt cable clamps (repacement type) aren't so hot. Engine turns over fine & runs.
Underhood harnesses are good, no hatchet job repairs.
Any direction would be appreciated.
Post Fiend
Joined: Jan 2005
Posts: 8,402
Likes: 10
Quite often the power for the diagnostic port goes through the cigarette lighter fuse so check that. If that is good the only other thing I can think of is to check for a bad fuse in an inline fuse holder under the dash.
Sorry I can`t be of much more help.
Sorry I can`t be of much more help.
Thread Starter
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FTE Chapter Leader
Joined: May 2006
Posts: 12,317
Likes: 1,298
From: Central Mississippi
Did not check the dash fuse panel, just the pwr distribution block under hood... 
Will do it when I can make it back out to the truck's home. Thnx for the reminder.
Will do it when I can make it back out to the truck's home. Thnx for the reminder.
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