Wear at the TCC plunger valve sleeve results in improper control of the lockup control valve, allowing converter apply or release pressure to be reduced.
The Sonnax kit corrects the lost converter and solenoid pressure, restoring proper lockup control.
Some Toyota/Lexus A340E/F and Aisin AW 60-41SN transmissions are equipped with a TCC control plunger valve and sleeve. This assembly is added to control the TCC lockup control valve with converter and solenoid fluid pressures. Due to the reciprocating movement of the OE steel valve in the cast aluminum sleeve, wear at the sleeve bore is a common occurrence. This results in reduced apply and release pressure to the converter, causing TCC apply/release concerns, slip codes, overheated fluid and burnt converters.
Installing Sonnax TCC control plunger valve kit 19741-01K can restore correct converter pressure control.
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 16, 2014
Topics: Identification Guides Transmission Toyota/Lexus A340E Transmission A340F TransmissionRead Now
August 21, 2013
Topics: Vacuum Testing Vacuum Test Guides Transmission Toyota/Lexus A340E Transmission A340F TransmissionRead Now
Contact a Sonnax Parts Distributor.
A vacuum test at the ports indicated fails to hold at least 18 in-Hg, or if visual wear is detected.