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  • Burnt converter
  • Overheated fluid
  • TCC apply & release concerns
  • TCC codes


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.

60-41SN, A340E, A340F

TCC Control Plunger Valve Kit
Part No. 19741-01K

In A340E/F, fits EPC throttle control units only. Will not work on cable-style throttle control units.

You need this if... View Instructions

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.

  • Valve
  • Sleeve
  • Roll Pin Round

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.

Toyota/Lexus A340E/F Valve Body Layout

A340e f vbl thumb

January 16, 2014

Toyota A340E/F Identification Guide

Topics: Identification Guides Transmission Toyota/Lexus A340E Transmission A340F Transmission

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August 21, 2013

Toyota A340E/F, '00-Later Vacuum Test Guide

Topics: Vacuum Testing Vacuum Test Guides Transmission Toyota/Lexus A340E Transmission A340F Transmission

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  • 19741 01k combo1
  • 19741 01k combo2
  • 19741 01k

You need this if...

A vacuum test at the ports indicated fails to hold at least 18 in-Hg, or if visual wear is detected.

  • 19741 01k in test2
  • 19741 01k in test1