Fooling DoD...DONE!!
05-18-2010, 05:46 AM
#22
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No fooling around required, just change a flag value for third gear in two dod disable tables = done.
**edit**
Here's a pic of the tables - change the indicated zero's to "1"
Attachment 232833
**edit**
Here's a pic of the tables - change the indicated zero's to "1"
Attachment 232833
Took some measurements on that sensor. .5v with no vacuum and 3v at idle. Gonna pick up some things at radio shack tonight to vary the voltage between the two. Should be pretty simple, just turn the pot till the led turns off and see if I have any alarms!
05-18-2010, 05:56 AM
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Man, I do need to get that program. but still, I want to switch on the fly!
Took some measurements on that sensor. .5v with no vacuum and 3v at idle. Gonna pick up some things at radio shack tonight to vary the voltage between the two. Should be pretty simple, just turn the pot till the led turns off and see if I have any alarms!
Took some measurements on that sensor. .5v with no vacuum and 3v at idle. Gonna pick up some things at radio shack tonight to vary the voltage between the two. Should be pretty simple, just turn the pot till the led turns off and see if I have any alarms!
05-18-2010, 06:40 AM
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Switchable?
The only non-software option I see is to put a switch in the power lead going to the DOD connector. You'd need to find a wiring diagram to see which wire this is.
the DOD solenoids are designed to fail "off", so without power, they can't switch the lifters into DOD mode - but, does this throw a code? If the ECM is commanding DOD, will it know that the solenoids have been prevented from operating? Will the fuel injectors for the cylinders the ECM is trying to deactivate continue to fire? I just don't know.
The only non-software option I see is to put a switch in the power lead going to the DOD connector. You'd need to find a wiring diagram to see which wire this is.
the DOD solenoids are designed to fail "off", so without power, they can't switch the lifters into DOD mode - but, does this throw a code? If the ECM is commanding DOD, will it know that the solenoids have been prevented from operating? Will the fuel injectors for the cylinders the ECM is trying to deactivate continue to fire? I just don't know.
Last edited by TiredGXP; 05-18-2010 at 06:54 PM.
05-18-2010, 08:09 AM
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ahhhhh, that's a good idea. You could just set it into fail mode......more than likely is going to throw a CEL while it's on though. You'd have to shut these off. See attached.
05-18-2010, 11:34 AM
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If I get a CEL I will have to wait till I can afford that.
"Honey, somethings broke on the car and its gonna cost $500 to fix it" lol.
05-19-2010, 05:54 AM
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OMG, it works!
turned it down below 2.2v and it shut off. Drove for about 10 minutes afterwards and it seemed normal.
I wired it up wrong at first last night and while I was trying to figure out what was wrong, with the ignition on-engine not running, an alarm came up that said "reduced engine power".
I fixed my wiring, but when I left to try it out this morning the CEL was on. So I'm not sure I know that this doesn't throw a code yet. Do you think it would have alarmed at me again if it threw the same code?
The inside of my car looks like a science experiment right now though, I need to get it installed cleanly.
turned it down below 2.2v and it shut off. Drove for about 10 minutes afterwards and it seemed normal.
I wired it up wrong at first last night and while I was trying to figure out what was wrong, with the ignition on-engine not running, an alarm came up that said "reduced engine power".
I fixed my wiring, but when I left to try it out this morning the CEL was on. So I'm not sure I know that this doesn't throw a code yet. Do you think it would have alarmed at me again if it threw the same code?
The inside of my car looks like a science experiment right now though, I need to get it installed cleanly.
05-19-2010, 06:10 AM
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Some DTC's don't throw a code or set the CEL until the second error. That happens to be the case with DOD error codes:
Software solution (HPT) FTMFW!
Edit DOH, JDMC5 already posted a shot of the DTCs
Software solution (HPT) FTMFW!
Edit DOH, JDMC5 already posted a shot of the DTCs
05-19-2010, 06:17 AM
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Guess I'll clear the code and see if it happens again. Whats the best way? Autozone here won't clear them for you, just pull them. They claim it can damage some engines (BS, but anyway).
So should I just pull the battery wire? how long should I let it sit?
TiredGXP, can you look for errors related to low vacuum? Those errors look more like what you would see if you pulled the connector to the solenoids.
So should I just pull the battery wire? how long should I let it sit?
TiredGXP, can you look for errors related to low vacuum? Those errors look more like what you would see if you pulled the connector to the solenoids.
Last edited by jderou_GXP; 05-19-2010 at 06:25 AM.
05-19-2010, 08:18 AM
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Guess I'll clear the code and see if it happens again. Whats the best way? Autozone here won't clear them for you, just pull them. They claim it can damage some engines (BS, but anyway).
So should I just pull the battery wire? how long should I let it sit?
TiredGXP, can you look for errors related to low vacuum? Those errors look more like what you would see if you pulled the connector to the solenoids.
So should I just pull the battery wire? how long should I let it sit?
TiredGXP, can you look for errors related to low vacuum? Those errors look more like what you would see if you pulled the connector to the solenoids.
05-19-2010, 08:30 AM
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05-19-2010, 12:00 PM
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I just cleared the codes and went for a ~10 minute drive.
I win, DoD Loses! Worked like a charm. No new CEL. Total cost to this point, about $6.
I could do it for less if I didn't want to be able to turn it back on.
I haven't actually tested the switch out yet though, it is full time off right now. The sensor is completely bypassed. Only issue that could come up with that is when flipping the switch, between sources, their will be an inbetween time where the ECM could see no voltage, and alarm.
If that happens I'll just have to get a little more creative with the circuit.
My first mod will either be called DoDoD, or AFMoD
I win, DoD Loses! Worked like a charm. No new CEL. Total cost to this point, about $6.
I could do it for less if I didn't want to be able to turn it back on.
I haven't actually tested the switch out yet though, it is full time off right now. The sensor is completely bypassed. Only issue that could come up with that is when flipping the switch, between sources, their will be an inbetween time where the ECM could see no voltage, and alarm.
If that happens I'll just have to get a little more creative with the circuit.
My first mod will either be called DoDoD, or AFMoD
05-19-2010, 12:16 PM
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I just cleared the codes and went for a ~10 minute drive.
I win, DoD Loses! Worked like a charm. No new CEL. Total cost to this point, about $6.
I could do it for less if I didn't want to be able to turn it back on.
I haven't actually tested the switch out yet though, it is full time off right now. The sensor is completely bypassed. Only issue that could come up with that is when flipping the switch, between sources, their will be an inbetween time where the ECM could see no voltage, and alarm.
If that happens I'll just have to get a little more creative with the circuit.
My first mod will either be called DoDoD, or AFMoD
I win, DoD Loses! Worked like a charm. No new CEL. Total cost to this point, about $6.
I could do it for less if I didn't want to be able to turn it back on.
I haven't actually tested the switch out yet though, it is full time off right now. The sensor is completely bypassed. Only issue that could come up with that is when flipping the switch, between sources, their will be an inbetween time where the ECM could see no voltage, and alarm.
If that happens I'll just have to get a little more creative with the circuit.
My first mod will either be called DoDoD, or AFMoD
05-21-2010, 05:49 AM
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I'm at stage 2 now of this. I have the wiring more permanently installed, and everything is wired up as I plan it to be when I am done. The only thing I haven't done is make a mount for it in the car and try to blend it in with the interior.
Some blurry-*** pics to prove I'm not blowing smoke. I pulled out my old camera, apparently it has focus issues. and obviously the date isn't right.
Oh, and so far the on-off switch is working well!
That switch assembly will be scaled down majorly before it gets mounted. I think I should be able to fit it all in that slot between the console and the little glove box thing above it.
first pic is the tap into the DoD solenoid tray, for the led indicator.
second shows the finished wiring
third - switch
fourth - everyone needs a whiteboard at home!
fifth - starting the brake booster pressure sensor splice.
Some blurry-*** pics to prove I'm not blowing smoke. I pulled out my old camera, apparently it has focus issues. and obviously the date isn't right.
Oh, and so far the on-off switch is working well!
That switch assembly will be scaled down majorly before it gets mounted. I think I should be able to fit it all in that slot between the console and the little glove box thing above it.
first pic is the tap into the DoD solenoid tray, for the led indicator.
second shows the finished wiring
third - switch
fourth - everyone needs a whiteboard at home!
fifth - starting the brake booster pressure sensor splice.
Last edited by jderou_GXP; 05-21-2010 at 05:56 AM.
