wont shift out of park without pressing override *FIXED*

Hello, having a problem where I can't shift out of park without pressing the override. All fuses are good, replaced the brake switch under the brake, brake lights work... Ive look through the forums and can't seem to find this issue exactly. Saw some where the override doesn't work either and points to solenoid but wondering if my issue may be different?

 

If the brake lights lights work I think the next step is to dig into the console down by the shifter and see if release mechanism is getting a command.

One of these guys should have a schematic
@Dm93
@6 gearT444E

 

Ditto above.

Drawing: NOTE: The White Wire with Black Stripe that goes off screen is the ground wire.

 

Here's some additional info for your TS&R

 

The shift lock ECU also interfaces with the transmission Park/Neutral switch, be sure to also check it is receiving the proper signals from there.

 

Thanks for the info! I'll be digging into this soon. I forgot to mention that I can start the truck without pushing the brake. From reading the info it looks to be the shift lock control ECU.

 

You shouldn't have to push the brake to start the truck anyway, that generally only applies to vehicles with push button start instead of key start. Lots of good info above to troubleshoot the system.

 

@Dm93 , Only now did I noticed the helpful and useful links. Was I blind before or did you just recently add them? Thanks BTW.

 

I didn't add any links?

 

Hmmm, this is what I'm refering to...


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Oh in my signature, yea those have been there for awhile. I don’t think they show up on mobile though.

 

Pin 1-8 I get nothing with key to acc
Pin 8-9 nothing when pressing brake in any key position
4-8 nothing in any key position

6-8 12.24 V

5-8 nothin in off or on

here’s the harness I am testing from.

 

Do you have power on pin 1 (Pink) with the key on?

I just looked more closely at the testing chart and they have the terminal numbers wrong, the designations are correct though.

 

Yes pink pin 1 - 8 give me 12.28 v

 

Here’s the shift assy removed.

 

Ok, here's the proper designations according to the wiring diagram.

Pin 1 (Pink) Ignition power (12v with key in run)
Pin 6 (Grey) Accessory Power (12v with key in accessory or run)
Pin 7 (Blue) Brake switch input (12v with brake depressed)
Pin 8 (White/Black) Ground (0v at all times)

 

Ok according to your updated pin out

pin 6 I get 12 v when on acc
pin 7 gives me voltage when hitting brake

 

Seems you have everything there it should need to release the park lock, sounds like either the solenoid failed or the shift lock ECU failed.
I'm unsure if they are one unit or separate units as my truck has a manual.

 

Apparently it is a separate piece.
It looks like this - https://partsouq.com/en/search/all?q=8543271010

If you find it, maybe try this?