SOLVED - O/D Off Button not working - No O/D Off light on dash when button is pushed.

[97RangerXLT]

Awesome! Thanks for the follow up

AJ

 

[Orca]

I found a video online for most of the procedure to remove the Auto Trans Gear Selector Arm.... I took screen shots of the video and typed out the instructions so you can have a printed instruction sheet.

Glad to see that you persevered with this and got your truck fixed. Even happier to see that you "paid it forward" with that PDF write-up of the procedure, including the link to that video, so that future readers of this thread might benefit too. "Nice job!" on both counts.

In case it's helpful for future readers of this thread who use an OBD2 scantool with "custom" PIDs to help their diagnoses, I'll mention a couple of related PCM-node, Mode $22 PIDs that I just successfully tested on my 2004 Ford Ranger:

1. PID $16B5, bit 6 = "O/D OFF" mode, 1 = O/D disabled, 0 = O/D enabled
2. PID $1101, bit 4 = current position of TCS ("O/D ON/OFF") switch, 1 = pressed, 0 = released

That 1st PID reports (see top graph, below) whether the PCM considers overdrive as "disabled" or "available". The 2nd one (see bottom graph, below) simply reports whether the TCS switch is being pressed.

Here's a pair of synchronized graphs, taken with KOEO (Key On, Engine Off). The bottom graph shows me pushing the "O/D ON/OFF" switch 4 times, with the last activation showing how I held the switch down for a while. The top graph shows the PCM switching into and out of "O/D OFF" mode 2 times, aligned in time with the initial switch presses:

Of course, if your dashboard "O/D OFF" light is working, that's a quicker, easier way to verify switch/mode operation, even with the truck not running. But those PIDs could be useful for folks whose dashboard light is not working, especially since that light, by design, does NOT come on with the usual KOEO power-on self-test (at least on my 2004 Ranger).