• Linear solenoid codes
  • Gear ratio codes
  • Kickdown slip
  • Kickdown shock
  • 4th Slip
  • 5th Slip
  • 6th Slip


High and/or low pressure in the solenoid modulator circuits may be caused by excess valve/bore wear. Wear at the inboard end causes excess feed pressure. Wear at outboard and midsection reduces solenoid modulator pressure. This loss has the most effect on engagements and boost oil for line pressure rise.


The Sonnax wear-resistant sleeve and valve correct circuit pressure loss and restore control over solenoid modulator valve function.

09D, TR-60SN

Solenoid Modulator Valve Kit
Part No. 25741-18K

Fits Either of 2 Locations

You need this if... View Instructions Find a Distributor

Vehicles equipped with Aisin AW TR-60SN and and VW/Audi 09D transmissions may experience slippage in 4th, 5th or 6th Gear during steady driving. They also can experience slippage or shock on kickdown. These problems are caused by excess wear in the solenoid modulator valves, which results in improper solenoid pressures. Replacing the worn solenoid modulator valve or valves with Sonnax solenoid modulator valve kit 25741-18K will ensure the solenoids are fed the proper pressures, and will eliminate excess slippage and shock on kickdown.

  • Hardcoat anodized aluminum valve combats premature wear and features annual grooves for better centering in the bore
  • The valve sleeve is highly wear-resistant to increase life
  • This kit includes a new end plug and spring for proper calibration
  • Sleeve
  • Valve
  • Spring
  • End Plug

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.

Aisin AW TR-60SN Valve Body Layout

Aisin AW TR-60SN Valve Body Layout
  • 09D, TR-60SN Solenoid Modulator Valve Kit 25741-18K
  • 09D, TR-60SN Solenoid Modulator Valve Kit 25741-18K

You need this if...

Vacuum testing at the port(s) indicated fails to hold the recommended minimum in-Hg, or if wear is visually detected.

09D, TR-60SN Solenoid Modulator Valve Kit Vacuum Test Locations