Overdrive Cancel switch not working
Fleet Owner
Joined: Jun 2004
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From: Rio Rico, AZ.
What I was thinking is to trace the wires to where ever they go (I don't know where, sorry) and see if the signal is making it to the other end of the wire in the harness from the switch.
Fleet Mechanic
Joined: Feb 2005
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From: Northern Colorado
Originally Posted by ggirten
Opened my column up this past weekend. Everything looks good there. I guess the next step is to remove the suspect plug from the tranny and go through the wiring there. I suppose if this needs to be replaced, it is a dealer item and the whole harness would have to be replaced..
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Senior User
Joined: Mar 2003
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From: Western Kentucky
That was my thougt on the tranny side. This hasn't worked since the mechanic replace the torque. The wires on the main harness looks like he grabbed them instead of the harness and pulled. All have bare wire showing. I checked them visually and sealed them with silicone, but I think I will use a meter and check for continuity.
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Senior User
Joined: Mar 2003
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From: Western Kentucky
Originally Posted by guzzle92
It depends on what kind of a problem you find there, if it is there. A broken wire can be repaired with solder and heatshrink tubing. HERE is a procedure (.pdf file) on how to remove the plug pins/connectors if a wire is broken off of one of those. I would say the only time a harness would have to be replaced is if a plug is totally shattered.
Fleet Owner
Joined: Jun 2004
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From: Rio Rico, AZ.
Originally Posted by ggirten
The wires are bare as the go into the plug. The plug itself is sealed. I would have the shatter the plug to gain access to the pins.
Fleet Mechanic
Joined: Feb 2005
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From: Northern Colorado
Originally Posted by ggirten
The wires are bare as the go into the plug. The plug itself is sealed. I would have the shatter the plug to gain access to the pins.
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Senior User
Joined: Mar 2003
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From: Western Kentucky
Originally Posted by Kwikkordead
Does it have one of those red retainer clips? If so remove the red part and then all the connectors are easily removed by holding the little black plastic retainer back and sliding the conductor part out of the body of the plug.
This is on a 99 F250 SD with a 7.3l. It is actually one of the 98.5.
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Senior User
Joined: Mar 2003
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From: Western Kentucky
Originally Posted by guzzle92
Does this look like your harness? If so, which plug is the one that looks damaged?
Fleet Mechanic
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From: Northern Colorado
Originally Posted by ggirten
That is close, but the plug that is damaged is on the passenger side just above the pan.
Posting Guru
Joined: Jul 2003
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Originally Posted by ggirten
I guess the next step is to remove the suspect plug from the tranny and go through the wiring there.
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Senior User
Joined: Mar 2003
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From: Western Kentucky
My understanding is that the button goes to the pcm. The pcm then triggers the tranny through this plug. Something has to tell the tranny to kick out of overdrive. There should also be a couple of wires that trigger the torque to lock. I have the diagrams of the electrical and am going through those.
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Joined: Oct 2005
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Originally Posted by ggirten
My understanding is that the button goes to the pcm. The pcm then triggers the tranny through this plug. Something has to tell the tranny to kick out of overdrive. There should also be a couple of wires that trigger the torque to lock. I have the diagrams of the electrical and am going through those.
I have been having trouble with my transmission, won't go into D. any chance I could get a copy of the electrical diagrams for the pcm when you get time. Problem started after changing air filter and headlight bulbs so I think a poor connection somewhere.
Thanks
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Senior User
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From: Western Kentucky