January 16, 2014
Excess wear at the lockup relay control sleeve in Aisin AW and Toyota/Lexus units with casting code 9132 prevents proper TCC operation and can result in various adverse symptoms. TCC apply and release concerns often develop, coupled with overheated fluid, inadequate lubrication, bushing and solenoid failure, RPM fluctuation, and converter codes. Installing Sonnax lockup relay control valve kit 77741-02K restores critical hydraulic clearances, allowing renewed TCC and lube operation.
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
August 21, 2013
September 30, 2005
Gregg Nader
Vacuum testing at the port(s) indicated fails to hold the recommended minimum in-Hg, or if wear is visually detected.