[Karl Disco2]

Just bought a d2 for basically nothing only thing wrong is it's stuck in 3rd with the flashing "S" and "M" and also the "d" flashes. Code that is being showed is P0753 shift solenoid A Circuit Electrical searched but found nothing wondering if anyone might have some input.

Thanks in advance!

 

[Joe Btfsplk]

Karl Disco 2:
There are a couple of reasons for this.

1) most overlooked one is to check the battery, if not 100% the voltage could drop low enough when starting and cause it to go into limp mode (flashing M&S with flashing D)

2) Water from the aircon drips directly on the gear position switch causing a short, this then makes the EAT ECU think that it selected two gears causing limp mode.

First have it checked with a testbook to see if any error codes exist. And then take it from there. Also remember to visually inspect the plugs as well as buzz(Check continuity) all the wires from the ECU to EAT ECU which is located under the passenger seat. You will also need to remove the gear lever and the console. When you remove the gear lever dont twist it at all, as you will break it. IT JUST PULLS OFF!!! with quite a bit of effort.

Folks I know of replaced a perfectly good box because of a plug. so check visually as well as electronically and with TESTBOOK.

 

[OneRyan]

i've also had a bad crank sensor cause similar problems

start with the battery as noted above

 

[Karl Disco2]

Karl Disco 2:
There are a couple of reasons for this.

1) most overlooked one is to check the battery, if not 100% the voltage could drop low enough when starting and cause it to go into limp mode (flashing M&S with flashing D)

2) Water from the aircon drips directly on the gear position switch causing a short, this then makes the EAT ECU think that it selected two gears causing limp mode.

First have it checked with a testbook to see if any error codes exist. And then take it from there. Also remember to visually inspect the plugs as well as buzz(Check continuity) all the wires from the ECU to EAT ECU which is located under the passenger seat. You will also need to remove the gear lever and the console. When you remove the gear lever dont twist it at all, as you will break it. IT JUST PULLS OFF!!! with quite a bit of effort.

Folks I know of replaced a perfectly good box because of a plug. so check visually as well as electronically and with TESTBOOK.

Thanks yea I'll try that and check the xyz switch too I'll check the cranck sensor too maybe it's dirty, thanks again I'll keep this thread posted on my findings

 

[Joe Btfsplk]

Karl:
If all else fails, I could be persuaded to take it off your hands free gratis!!!! ;-)

 

[Karl Disco2]

Well did the xyz switch today mine was pretty oxidized I replaced it with a clean junkyard one, all gears show up on the dash but the "D" is still blinking along with the m and s too so I'm guessing it's not that. The battery with car off reads 11.99 with car running with lights and radio 13.45. I'm starting to think it really is the transmission solenoid. Again any help is welcomed

 

[disco biscuit]

I hate to ask did you clear the codes. If not you can do a hard reset by pulling the battery cables.

 

[Karl Disco2]

I hate to ask did you clear the codes. If not you can do a hard reset by pulling the battery cables.

No I didn't, I have to clear the code to see if it worked? Or will it just come off of limp mode when I fix whatever it is?

 

[Karl Disco2]

Just noticed when I shift thru "2-3" it still flashes "D" but when I go into "1" the "d" disappears on the cluster does that mean xyz isn't adjusted right?

 

[disco biscuit]

It could. Some codes disappear after fixing some dont. It rules out old codes. Disconnect the battery and touch the negative and positive together for a couple mins. This grounds and discharges the kernal memory. Make sure the battery is disconnected.

 

[Karl Disco2]

Will try tomorrow after I re adjust the switch will keep you posted
Thanks!!

 

[Karl Disco2]

Took the truck to autozone cleared the codes and the p0753 wouldn't go away. I checked the charge system I got 588 cca out of 700 (truck has been sitting for like 2 weeks with the occasional drive around the block. Measured 12.14 volts with car off. With car on with no load 13.2v with car on with load it measured 13.16v. Question is this low enough to cause my check engine for the trans and cause it to go in limp mode?
Thanks

 

[Karl Disco2]

Anybody any help with the battery question?