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96 Toyota Avalon Trouble code 770
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Mrnavy
Novice
Jan 11, 2012, 10:28 AM
Post #1 of 6
(3531 views)
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96 Toyota Avalon Trouble code 770
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I have a 96 Toyota Avalon 6Cy 3.0 with 223,000 mi the check engine light came on and stayed on for about 1 week and went off. I took it to my friend and he checked the code and found Shift Selonid E code 770 stored in it. Then about 2 weeks later the check engine light came on again. I had just started driving it down the road 1/4 mi from being in the garage over night and the air Temp was about 43F and it came on again. So i stopped by my friend again with the check engine light on and again it was the same Code 770 So what is the problem and how do i fix it, if it is a selonid where do i find it . Thanks for any help
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Discretesignals
Ultimate Carjunky
/ Moderator
Jan 11, 2012, 12:07 PM
Post #2 of 6
(3495 views)
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Re: 96 Toyota Avalon Trouble code 770
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Basically that code pops up when the ECU commands the SL (converter clutch) solenoid, but doesn't see the torque converter clutch engaging. The ECU knows when the torque converter clutch is engaged or slipping by comparing the crankshaft position sensor and the turbine speed sensor signals.
Need to swing into a transmission shop, so they can check the electrical portion of the system which includes the solenoid and to be sure the speed sensor signal isn't glitching. If all that checks out, you either have a problem in the valve body, TCC hydraulic circuit, or the torque converter.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
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Mrnavy
Novice
Jan 11, 2012, 12:13 PM
Post #3 of 6
(3492 views)
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Re: 96 Toyota Avalon Trouble code 770
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Thanks for your reply i will have it looked at and post my findings
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Mrnavy
Novice
Jan 19, 2012, 2:04 PM
Post #4 of 6
(3431 views)
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Re: 96 Toyota Avalon Trouble code 770
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I checked the transmission and it was a Qt low so it had been since 2007 the last change of oil . I had my mechanic drop the pan change filter and change oil so far 1 week of driving and no check Eng light Hope this works
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Mrnavy
Novice
Feb 8, 2012, 2:38 PM
Post #5 of 6
(3385 views)
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Re: 96 Toyota Avalon Trouble code 770
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As of this date Feb 8th have not had any problems again so far after the filter & oil change hope it stays this way Thanks for your help
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Discretesignals
Ultimate Carjunky
/ Moderator
Feb 8, 2012, 5:54 PM
Post #6 of 6
(3371 views)
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Re: 96 Toyota Avalon Trouble code 770
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That's a good thing  . Thanks for keeping us updated.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
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