Couldn't agree more.

Did you check those battery terminals yet?????

 

i solved my limp by rebuilding the xyz sensor, the A/C drain drips directly on the switch filling it with a nice mud. the transmission control unit is located under the seat that's why im asking you to check the ground on it.

 

ok so i changed out the alt. it is now putting out 14.25-14.5 so a charging problem is completely out of the picture i would think, if im wrong please correct me.

Fuse numbers F11 & F12 under the hood are fine; both 30 amp fuses.

The wxy switch it plugged in, and in dont quite a ways from the floor boards.

I checked for a isolated ground for the trany cpu under the seat, i did not see one; nor did i see anyplace were one could have been. I'm assuming it is grounded threw the 4 bolt into the floor.
Now that being said I did not go sticking a tester into the cpu connector looking for a ground, I dont think thats a good thing to do. If i'm wrong please feel free to correct me.

I did clean the battery terminals tonight, ive seen a lot worse. But you can eat off them now. I also clean the block ground, i did not clean the two ground connection in the fuse box; but with 14.25 at my obdcII port i think that rules all that out.

I checked floor all the way around even if i had drilled a rivet threw instead of sharing the heads off, there is nothing even close under the floor. you would have to use a 12 inch bit to hit a wire.

So as it stands now, the M&S lights are flashing as well as the D on the gear indication and the light next to the shifter handle. the truck is in limp mode, the shift indicator now reads P R N D D D D. the truck with drive and go back and forth, it just does not have 1st 2nd or overdrive gears.

I'm still open to suggestion :

 

You really need to find someone with a handheld scanner and read the codes stored in the trans ecu to know for sure. It is very possible that this is a fluke problem (xyz switch)and it happened when tugging on the gearshift cable or something silly. (it wouldn't be the first time and won't be the last). That being said lets just go over this one more time then is off to find a friend with a hht scanner.
The shift gate wiring has nothing to do with the m/s as all that circuit does is illiuminate the leds.
When you removed the inspection plate, you didn't disconnect the shift cable from the trans? pulling and tugging on the cable is probably not the best idea. you could go under and try to adjust the cable. All you need to do is loosen 1 nut on the shift arm, make sure the lever and selector cable are both in park, and tighten nut. recheck.
or you can loosen the nut and with the vehicle NOT running run it thru the gears manually and see if you get the same prnddd on the display. ***Make sure you put the ebrake on so your rover doesn't roll over you by accident!
Next did you mess around with the white connector under the center console at the rear where the harness comes thru? did you disconnect it / reconnect it? check all the wires at the inside of the center console.
Still no good? get the fault codes read for the transmission.
There's really not much that can go wrong here... bad grounds, corroded wires at the trans ecu connector, xyz switch, or ecu. Fault codes will definitely clear things up..without guessing

For your future reference it takes less than 5 minutes to loosen the bolt at the trans shift
lever and remove the clip from the selctor cable. then you can take the complete shift assembly
out of you way while you're working.

 

this is what is bothering me. the codes you pulled make me believe something is shorted or disconnected.

p0734 implausible 4th gear ratio - should not set off the S&M lights and put you in limp

these two will put it in limp...
p0753 valve 1 open or short circut
p0758 valve 2 open or short circut

can you check fuses 21 and 25 in the glove compartment box? they effect the shift solenoid....

if that doesnt work you can try adjusting the sift cable like Mike said. just spray the crap out of that trunion nut because the shift cable is quite delicate and snaps easily if too much rotational tension is put on it. it should only take 1/2 a turn of the trunion for the cable to adjust and re-seat itself. The only reason i doubt this is the problem is because park would be blinking as well if adjustment was off because it wouldnt recognize it was in any gear.

sorry im out of answers. need somebody with a t4 scanner to read the codes off the EAT ECU.

 

I have a scanner and have listed the codes.

there is no pulling and tugging once the transfer case shifter is loose it lifts out of the way, see ashcroft video.

No, I unpluged the seats, windows, sportmode, shift lock switches and the lighter.
I have not reinstalled the center console just plugged everything back in.

It is possible that it is a bad xyz switch as first and second gear is controlled by the y and z legs of the switch, which are two of the codes.

Personally I believe the codes are nuisance codes because the truck is in limp mode.
Codes 753 & 758 soloniod 1 &2 are for 1st and 2nd gear and code 734 is for 4th gear.
in order to be in limp mode I would think these codes would be present as there is no 1st 2nd or 4th gears.

Has anyone ever tested an xyz switch?

I hate to sound testy but I'm getting the felling you people think I removed my console with a hammer and chisel, i can assure you i took all the care that you would have with your own truck.

 

removed my console with a hammer and chisel, i can assure you i took all the care that you would have with your own truck.

Jim,

Not assuming that at all just trying to help. I helped a forum member do a conversion
and ended up twisting and what not to get the pan out of the way. I did my own the next week and it was soooo much easier to loosen the shift cable nut and remove the c- clip and take the complete panel out of the way shifter, cable and all. Thats all I was referring to as to my experience with this. There really are no wires in the way to pinch or drill outside the vehicle . Sorry I did not see you've read the codes.
aside from the xyz switch just failing like that... (and I've seen stranger things happen) Make sure the c-clip is still holding the cable at the cable bracket and also take a look at the gray xyz connector and make sure no wires pulled out of the connector. If the shift cable is routed under the xyz harness, it "could" be possible it pulled 1 wire out of the connector and that could be causing a fault.
As hilltopper said, the cable adjusting nut can be cumbersome you can hold the end of the cable if necessary with pliers to keep it from bending.
So in a nutshell make sure the shift cable c clip is still in place make sure the xyz wires are all in the connector and try adjusting the shift cable.
Well get you sorted out here..

 

the T4 can be hooked directly into the tranny ecu via the connection at the cruise control, your odb2 can't do that.

you can pull the xyz and clean it and reseal it and re-route the a/c drain. you will have to do that eventually, and if you think that is the root of the problem then give it a go now. can't hurt. This is the best write up i have seen on that procedure.

http://www.aulro.com/afvb/projects-t...uhb100190.html

 

Thanks, just getting frustrated
This Lucas “prince of darkness” wiring has always been over complicated. theres a reason i run a volt pack on my BSA, now i remember why.
I am using Hawkeye meter so it is not just a standard scanner, I just don’t want to go into the “programing section” only bad thing can happen in there.
So to adjust the xyz, I loosen the cable and slide the switch back and forth checking that the switch and the gear indicator on the dash match up.
Does my theory of the codes make sense? The codes are for 1st 2nd & 4th gears which are not working so by default those codes should show up. Right?
Does anyone know where the xyz switch shows up in the rave, I did a quick search and got nothing. is it called something else?
Again sorry for losing it, but 40 miles each way on public transportation sucks & takes 1.5 hours. So i have to work on my truck in the dark & its starting to get real cold in boston.

 

workshop manual - automatic gear box - page 44-12 has what volt readings appear on XYZ connector pins for which positions.

circuits diagrams - two pages, electrical circuit diagrams page 62 - 63.

connector - from electrical library C0675

attached for your non-credit coursework in "Brit - Lit"