Bore wear at the TCC control valve and/or sleeve results in the converter remaining applied and transferring the shift shock. Loss of control also results in RPM fluctuation.
The Sonnax lockup clutch control valve kit corrects lost lube pressure and unsynchronized control timing caused by worn components in the lockup clutch control valve train and/or bore.
Aisin AW TR-60SN transmission complaints associated with bore wear at the TCC lockup control valve include harsh 2-3 and harsh coast downshifts. This is due to the converter clutch remaining applied. When bore wear delays TCC apply, the vehicle RPM may surge or set gear ratio codes due to high slip rates. Installing the Sonnax lockup clutch control valve kit 25741-29K will restore correct lube pressure and valve control timing.
Sonnax valve body layouts provide a detailed overview of individual units making it quick and easy to determine what’s available for the specific valve body you’re working on. See all Sonnax valve body layouts.
January 26, 2015
Topics: Diagnostics And Theory Transmission Aisin AW VW/Audi 09D Transmission 09G, 09K, 09M Transmission TR-60SN Transmission TF-60SN TransmissionRead Now
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A vacuum test at the indicated ports fails to yield 18 in-hg or greater, or if visual wear is detected.