Controlling lockup in 4L80e with fbody 4L60E program help

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10-01-2015
GrannySShifting

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Controlling lockup in 4L80e with fbody 4L60E program help

M6 to 80e conversion, has manual valvebody. Found pin to tie in to ecm to provide ground trigger for converter lockup, when I command it with HPTuners it locks converter up fine. Doesnt do it by itself. Set all gear enable speeds to something like 57 on and off below 54 but still doesnt command it locked

Around frame 300 I see TCC Brake off bit go from yes to no
Frame 317 only has TCC Ramp Exceed, D2D3D4 Off set to yes, and TCC Cold Off set to yes

Frame 679 I manually command it on with HPT and the only thing I see change other than enable solenoid going from Off to On is the TCC Brake Off switching to NO at that time. is that the key to getting this to work? Where it is picking this signal up from? Its tied to something because I see it switching elsewhere in the logs from ON to OFF
11-26-2016
GrannySShifting

Anyone? Have another car was attempting to get this to work again TCC D2D3D4 Off and TCC Cold Off are the only ones set to yes keeping it from locking up
11-30-2016
4wheelinls1

Quote:

Originally Posted by GrannySShifting

Anyone? Have another car was attempting to get this to work again TCC D2D3D4 Off and TCC Cold Off are the only ones set to yes keeping it from locking up

I don't believe you can as the TCC output is different, I have done a few and either a segment swap or use the 4l80e cal and retune the engine.
12-01-2016
GrannySShifting

Quote:

Originally Posted by 4wheelinls1

I don't believe you can as the TCC output is different, I have done a few and either a segment swap or use the 4l80e cal and retune the engine.

Say what? The output pin you just move the wire. I can command it locked with HPT just fine right now. You either segment swap 4l80e tune with adapter harness, or use 4l60 tune and relay to swap the output of one of the solenoids, but not sure what your talking about as far as lockup
12-01-2016
4wheelinls1

Yes you move the wires and if you have a 4l80e trans cal it should work. Its been a few years but when testing these on 4wd conversions i couldn't get the tcc to lock other than via the scan tool. I found the tcc output from the 4l60e cal was pwm and the 4l80e is on/off by using a test led. I logged all the tcc states and it would try to apply but didn't. If you have a 4l80e trans cal it should be fine. I couldn't find a cal that would segment swap to our Australian cals so ended up using a US lq9 truck file and tuning the engine to suit ls1
12-12-2016
Frost

Try setting P0719 0724 to No Error. The M6 cars have a single-state brake switch circuit. I've had trouble with lockup on 60 segments when the brake switch doesn't have the dual-state wiring that the auto cars have. It's a failsafe for the auto's so that the TCC won't stay locked if the brake switch has an issue. I've fixed that wiring on a few swaps and gotten expected behavior back.
12-12-2016
GrannySShifting

It's an a4 file though
12-12-2016
GrannySShifting

Wait your talking about an a4. There's no codes though so could that even be an issue?
12-13-2016
Frost

Quote:

Originally Posted by GrannySShifting

It's an a4 file though

Car used to be an M6; was saying that M6 brake switch wiring must (well should) change when moving to an A4 file; regardless of segment. A4 harness/cal uses a two-state switch; it must be high (+12) or ground, it cannot be high or float/open.
12-27-2024
GrannySShifting

Hey Steve just to drag this up from a current one Im trying to figure out, pretty sure it can be high/12v or open. Couple other people have said they have done it like that (unless its OS dependant) and if you wired that purple TCC wire to 12 volt ALL the time it should lock up when commanded right? I have one that refuses