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What do you all think I have going on?
2003 SMT Help
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What do you all think I have going on?
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Curious thoughts on what wrong, I think it’s the SMT ECU, doing more troubleshooting Monday before buying a comp.
Know of any $$$ reasonable ones out there if so?
Know of any $$$ reasonable ones out there if so?
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Those are my only codes
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What is a comp? Did you mean pump?
All that can be said about the information posted is that there’s something wrong with the SMT system.
You can do some searching in the SMT section about the symptoms you’re having and see what comes up.
Some of the most common issues are fluid on the position sensors, sheared actuator link bolt and pump operation.
If you want to get more specific codes, then you’ll need to get Techstream but generally problems can be resolved by addressing the items listed above.
Edit: Maybe you meant getting a new TCU instead of a pump? It’s probably not the TCU that’s bad. It just stops communicating with the engine ECU because there’s a problem with the SMT system. With those two codes, the fuel is cut off.
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What is the car doing, besides throwing those two codes? Will the engine run in neutral? Is that screen shot taken from your own laptop with techstream installed? You can try comparing data list screen info to screen shots taken from a good SMT system. I have stored them at the bottom of this file: Techstream tips
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Thanks for the help on this. I work at a toyota dealership, I sell cars, The screen shot is from our tech stream.
The car runs perfect, has CEL on because of these codes?
So, strata up fine, N light on, try to shift into gear and it will sit there a bit, then usually die, fuel or ignition cut it seems.
Then sometimes will shift into either R or 1.
Then sometimes I get the Red Gear light on..
So that’s what I’m dealing with.
I just bought the car from a friend and it is perfect condition and super clean with only 54k miles on it!
I bought it knowing it had “go issues” lol
The car runs perfect, has CEL on because of these codes?
So, strata up fine, N light on, try to shift into gear and it will sit there a bit, then usually die, fuel or ignition cut it seems.
Then sometimes will shift into either R or 1.
Then sometimes I get the Red Gear light on..
So that’s what I’m dealing with.
I just bought the car from a friend and it is perfect condition and super clean with only 54k miles on it!
I bought it knowing it had “go issues” lol
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Since we don’t have any helpful codes, we’re off to guessing or studying the Data List screens to find the problem. I’m guessing it’s not moving out of neutral when requested. Have you watched the accumulator pressure on techstream? It should stay between 40 and 52 bar roughly. The data list info is very slow to refresh. When it (sometimes) goes into R or 1, can you then drive the car normally? Is it just struggling to get into R and 1, or is it also failing to shift 1,2,3,4,5?
The basic meaning of P0860 is that there is no communication between the ECU and the TCU, so for starters you could check the wiring that implements this link.
The BGB says explicitly that if both of these codes occur together, it will result in a fail-safe engine shutdown.
The BGB says explicitly that if both of these codes occur together, it will result in a fail-safe engine shutdown.
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I checked my notes from a reverse switch failure. The system generated P0860, P1646, and P0812 (reverse switch fail). Only the last code pointed to the real problem. Replacing the reverse switch resolved all the codes. I suspect P0820 and P1646 are more of an effect than a cause.
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I’ve never encountered a wiring issue here; it almost certainly is that the TCU isn’t happy. But, if it’s been sitting and there’s pack rats around, that’s definitely a possibility.
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Just don’t let your dealership touch it! The first thing they’ll want to do is replace the TCU, then the GSA, then the HPU and use their expensive SMT fluid, which is just brake fluid @ 12 times the price, lol
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Yeah, could be a pressure issue
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I am going to get it back on tech stream to dig a Little deeper on Monday. Thanks for all your help thus far.
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The other code I have is P0919
SHIFT stroke Control system
SHIFT stroke Control system
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Thanks Triz, what could be wrong inside the console, by the actual shifter knob itself?
Shift strike sensor, meaning take off air box and the pump to get to it?
Shift strike sensor, meaning take off air box and the pump to get to it?
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Definitely check the shift stroke position sensor. If there’s fluid on it, that would be the problem.
Other issues would be with inadequate pressure to move things completely. 919 is a shifting error, meaning that it wasn’t able move into a requested gear fully or that was the perception given by the position sensor, since it’s faulty.
edit: The shift stroke sensor is located on the GSA, underneath the car, not under the air box. You’ll see two sensors there; one is the shift sensor and the other is the clutch sensor. In a lot of cases both will have fluid on them.
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