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P0773 on 2001 ES300 - location of the solenoid?

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Old 08-03-13, 02:54 PM   #1
Aman
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Question P0773 on 2001 ES300 - location of the solenoid?

Greetings!

I had this check engine light ON many days now and today I have had it checked. The code is P0773, which means “Shift Solenoid "E" (Lock-Up Solenoid) Electrical Circuit Malfunction”. I hope the problem is only with the wiring or the coil.

I need your help to find out the exact location of the coil and if it is easily accessible. Also, where can I find the connections to check the resistance of the coil and the loop.

I felt a slight change in sound before it comes on every time after I reset . Can anyone explain to me how this code may affect my car and what change would I notice after fixing this coil?

Will my car run smoother than it does now?
Will it improve the mileage?
Would this solenoid restrict my car to limited speed?

Apologies for asking too much, but I am hopeful that I will be helped.
Thank you very much for you time and reply.
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Last edited by Aman; 08-09-13 at 08:36 AM..
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Old 08-04-13, 09:55 AM   #2
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As a starting point, best thing for you to do is a google search on "p0773".

You will find plenty of information as it relates to both Lexus and Toyota.

Phil
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Old 08-04-13, 06:26 PM   #3
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Thank you Phil,

I have read about this problem and how it might affect performance of my car. Also, I have got the FSM for my car which is showing the resistance check method but the only thing I could not find is the location of the Solenoid E.

Can you please help me with that?

P.S: I have not yet started checking the connections and the sensor. Just wondering if it would be easy to access after I open the hood.

Thank you very much.
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Old 08-04-13, 07:08 PM   #4
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Transmissions are not my expertise, so I may be wrong, but I believe that the solenoid is internal to the transmission. You may have to remove the pan to get to it.

Hopefully, someone with expertise in that area will chime in for you

Phil

Last edited by PFB; 08-04-13 at 07:17 PM..
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Old 08-06-13, 08:01 AM   #5
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The lock-up solenoid is what enables your transmission to switch into "over-drive" mode at highway speeds over 40mph.

The lock-up solenoid is located on top of the valve body inside the transmission.

The valve body will have to be removed from the transmission to access the wiring harness and solenoid.

Though not too bad of an issue, the solenoid should be replaced soon to prevent overheating of the transmission fluid and loss of gas mileage.

If you're mechanically inclined and with basic tools, the solenoid can be replaced yourself.
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Old 08-06-13, 12:00 PM   #6
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Thank you for your reply - My gas mileage is not very good and I believe it is because of this issue. Also, I have the FSM and will try to search the exact location. I hope I will be able to fix it by myself.

Does over drive mean that my Car will shift into the highest gear? in my case, it is a four speed car - would it make it shift into fifth gear?

Thank you very mukch.
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Old 10-01-13, 07:23 PM   #7
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Hello again,

I would like to thank you very all for your replies.

I checked the loop of the 'Shift Solenoid E (DSL)' as per the attached troubleshooting guide and found it open.

Finally, I purchased one from an auto shop and had it replaced two days ago.
The check-Engine light has not lit again and I hope it won't, since the loop is complete.
I didn't notice a significant difference in my driving experience and the RPM seems to be the same while driving above 45 MPH but hope there is no damage being caused to my transmission now.

Thank you again for replying to my question. Any comment or suggestion will be appreciated!
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File Type: pdf P0773.pdf (37.8 KB, 194 views)
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Old 10-01-13, 07:23 PM
 
 
 
 
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2001, 300, 98, check, code, engine, es, gs430, lexus, light, located, location, lock, p0773, shift, solenoid

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