Symptoms:

  • Gear ratio & solenoid codes
  • No 4th
  • No 5th
  • No 6th

Cause:

Bore wear at the main relay valve causes valve hangup.

Correction:

Eliminate the wear that allows pressure escape and causes valve sticking by reconditioning the bore and installing Sonnax oversized main relay valve kit.

09G, 09K, 09M, 6F21WA, TF-60SN

Oversized Main Relay Valve Kit
Part No. 15741-70K


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

Listed Aisin AW 6-speed units utilize a main relay and shuttle valve combination as a switch for 4th, 5th and 6th gear. As this bore wears vital control pressure escapes the circuit. This leads to valve sticking which results in loss of 4th, 5th and 6th Gear operation as well as possible gear ratio and solenoid codes. Reconditioning the bore and installing Sonnax oversized main relay valve kit 15741-70K eliminates these issues and restores normal shift operation.

  • Hardcoat anodized aluminum valves combat premature wear
  • Matched spring restores OE calibration
  • Relay Valve
  • Shuttle Valve
  • Spring

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 TF-60SN Valve Body Layout

Aisin AW TF-60SN Valve Body Layout
  • 09G, 09K, 09M, 6F21WA, TF-60SN Oversized Main Relay Valve Kit 15741-70K
  • 09G, 09K, 09M, 6F21WA, TF-60SN Oversized Main Relay Valve Kit 15741-70K

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.

09G, 09K, 09M, 6F21WA, TF-60SN Oversized Main Relay Valve Kit Vacuum Test Locations