2002 civic engine swap no AT shift p1773
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OK I'm frustrated. Did an engine & tranny swap replaced original 1.7L vtec engine, and tranny, used same year and style 2002 civic ex nothing fancy just wanted lower miles. Lets shorten the story- took 4 hours to remove and next day about same time to set the replacement into the civic 🤜🤛 hooked up wires hoses sensors filled fluids connected battery said a prayer🙏 🤞turned the key and👏🤝💪 beautiful hum smooth idle!! perfect!! We left this baby to run about 15 got in to drive it out of garage😱😟 only will go in reverse??😒 we can't even feel the shifting of gears when going through park neutral drive and lower gears. No engine light on dash all connections look good🙇😩 OK well the original tranny worked great so the decision was made to place original (2year old)tranny back in. Few more hours of work on day 3.. Again, made sure all connections secure in the correct positions wires were secure nothing loose frayed touching etc. Battery was hooked back up and again😬🙏🤞started her up!! Again we had a smooth start and nice hum. After a minute or two we got a code and hopes were dashed. Decided up shift through gears anyway and we can hear engagement this time that was a relief. Before running diagnostic of the check engine light we attempted to drive out the back out of the garage was smooth. We shifted into drive it sounded great then have her gas, this showed first issue the car was not going into first nor second automatically we are having to manually shift into gear then will engage into higher gear on its own?? I drive into garage again to scan the car The code is p1773 which turns out to not be a mechanical issue but an issue with the shift solenoid particularity valve B. The ground is secure and the wires are correctly placed into valves and PCM. We've tested the solenoid and the clicking is there the valves move and now I'm lost. I took the civic to one of those transmission franchises, explained in detail even have them code after 5 days of no word I went in and was told my PCM needs replacement because my speed sensor is switching off and on when it should have been in off position only! Now I'm more confused? Why am I not getting a code for my speed sensor they had no answer and told me it would cost a grand to get done. I can always find the identical computer have the immobilizer done and installed alot cheaper, but I feel in my gut this is not going to fix the issue of the computer and solenoid communicating with automatic transmission! Does anyone have any other helpful possibilities!
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Re: 2002 civic engine swap no AT shift p1773
Did you reverse the connectors for the shift solenoids?
https://www.civicforums.com/forums/3...3-problem.html
https://www.civicforums.com/forums/3...3-problem.html
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Did you reverse the connectors for the shift solenoids?
https://www.civicforums.com/forums/3...3-problem.html
https://www.civicforums.com/forums/3...3-problem.html
#4
If you think a good mechanic is expensive, try hiring a bad one
Re: 2002 civic engine swap no AT shift p1773
speed sensor was reading off/on off/on
a big transmission franchise.
That's the last place you want to go. Get your car away from them.
P1773 is defined as an electrical problem with Clutch Pressure Control solenoid B circuit, , it cannot be caused by a mechanical problem in the transmission.
So your possible causes will be the solenoid itself, wiring issues, or PCM. (Rule of thumb: it's never the pcm)
A big problem in trying to diagnose trans solenoid issues such as this is choosing the wrong solenoid when testing. There are several with somewhat similar names. I always check wiring diagrams and component locations and verify wire colors match what I think I'm supposed to be checking.
CPC B is the upper of the pair.
Wire colors brn/wht and blk/red
Solenoid resistance spec 3-10 ohms
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Rep Power: 0 Re: 2002 civic engine swap no AT shift p1773
1 I always disconnect battery before any work, ALWAYS!
2 I would have thought a bad computer wouldn't even be reading this p1773 code at all
3 the computer is not making any sort of tick when reading the sensors (I may be wrong on that but was told the PCM will make a tick sound if stuck reading any code)
4 I was told numerous times over the years that someone is more likely to hit the lottery than need to replace a PCM.
That's the last place you want to go. Get your car away from them.
P1773 is defined as an electrical problem with Clutch Pressure Control solenoid B circuit, , it cannot be caused by a mechanical problem in the transmission.
So your possible causes will be the solenoid itself, wiring issues, or PCM. (Rule of thumb: it's never the pcm)
A big problem in trying to diagnose trans solenoid issues such as this is choosing the wrong solenoid when testing. There are several with somewhat similar names. I always check wiring diagrams and component locations and verify wire colors match what I think I'm supposed to be checking.
CPC B is the upper of the pair.
Wire colors brn/wht and blk/red
Solenoid resistance spec 3-10 ohms
So your possible causes will be the solenoid itself, wiring issues, or PCM. (Rule of thumb: it's never the pcm)
A big problem in trying to diagnose trans solenoid issues such as this is choosing the wrong solenoid when testing. There are several with somewhat similar names. I always check wiring diagrams and component locations and verify wire colors match what I think I'm supposed to be checking.
CPC B is the upper of the pair.
Wire colors brn/wht and blk/red
Solenoid resistance spec 3-10 ohms
Last edited by ezone; 07-20-2018 at 07:21 PM.
#6
If you think a good mechanic is expensive, try hiring a bad one
Re: 2002 civic engine swap no AT shift p1773
3 the computer is not making any sort of tick when reading the sensors (I may be wrong on that but was told the PCM will make a tick sound if stuck reading any code)
4 I was told numerous times over the years that someone is more likely to hit the lottery than need to replace a PCM.
Hondas PCMs are pretty robust, but not bulletproof.
I haven't checked the ohms but I will do that my question is if the any reading is higher or lower how is that then repaired?
Also should I test the PCM?
I think you better get yourself a service manual so you can follow hondas diag trouble tree.
I also forgot to ask, is it possible that maybe the software needs to be reset in the PCM?
You DO need to erase the code and see if it returns (now, and again after every repair attempt), that's gonna be the only way you know if the PCM is finally happy with what it sees.
You have a code reader?
If you still have the other transmission you could take the solenoid set off of it and plug it into your cars harness, erase the codes and see if the same code still resets.
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