Recent content by Mastherr

Folks, I was finally able to do the testing. I disconnected the TOSS and went for a drive…. Terrible performance ;-) Than I reconnected the TOSS and disconnected the TISS, went for a drive….. Stopped and performed the transmission code testing…. And NOTHING!!!! No codes stored…. Again...

…good idea, will do that. It will validate if the TCM is working on not! Tks

I’m sure I have a module inside! The testing procedure is working fine.

Yes, the light comes on, goes off and the truck starts perfectly. Before spending $600-700 on a new TCM, is there any testing (electronically speaking) I could do ? Are there other cheaper sensors that might be worth replacing before the TCM itself? (i.e. swapping TISS for TOSS …)

Dear TOBASH, Mogman and Mullaney, after the misunderstanding, reconnected the batteries went for a 30 minutes spin around the block (during the spin I "forced" it, went to almost 3,500RPM, changed High/Low gears, etc....), parked, turned it off, unplugged the glow plugs TSU, jump wired "A" and...

Will do and keep you posted. Tks guys!

Ok, will disconnect temp control next time. Question: should I drive around in limp mode so new codes are stored again for future reading? Any idea for how long should I drive for the system to eventually record faulty codes again?

Hi Tobash, thanks for jumping in. I've disconnected the batteries for about 5 minutes, reconnected them, and went to do the testing. Removed, the cap, jump wired (A) and (E), Ignition on (not engine running), and transmission light begin the testing. Only 3 times code 12, a "lenghty" time no...

Yes, it does, as it should.,

😂😂😂😂😂😂😂😂😂 I thought it was an instruction to do so!!!!! …so what’s next ? Drive around for while until the codes are recorded again if any?

The way I see it, the vehicle is on "limp mode"! No transmission codes!... The only other visible clue is the break warning light (Red) always on.... Could this be the troubleshooting route to follow?

.

Dear Mogman, first I really appreciate your help. I have just disconnected both batteries entirely. Went to the TCU - jump-wired (A) and (E). Reconnected the batteries. Flipped the ignition switch to check the transmission codes..... Again nothing. I'll attach a video, unless I'm...

Tks Morgan, I’ll check the break equalizer and let you know. There are no codes on the transmission, when jump wiring, all clear. is there any other method (electronically) to find out if the system is in limp mode?

Hi guys, any clue why after removing all 3 wires from the brake switch (75A, 75B) the break warning light remains ON all the time????? Also, don't know if it has anything do with it... but my M1151A1 is running only on 1st and 2nd gears... doesn't engage 3rd and 4th.... could this break switch...