Tool Required VB-FIX Required

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Symptoms:
  • Bang shifts
  • Bind-up
  • Low control pressure
  • Low cooler flow
  • Shift concerns
  • Solenoid codes
  • TCC cycling
  • TCC slip
Cause:

Solenoid modulator valve bore wear allows erratic solenoid supply pressure.

Correction:

Recover hydraulic control and restore normal solenoid supply pressure by reconditioning the bore and installing Sonnax oversized solenoid modulator valve kit.

Tool Required VB-FIX Required

A750E, A750F, A760E, A760F, A760H, A761E, A960E, A960F, AB60E, AB60F

Oversized Solenoid Modulator Valve Kit

Part No.

147741-05K

Oversized Solenoid Modulator Valve Kit
  • 147741-05k_combo

  • Oversized Solenoid Modulator Valve Kit

Small_147741-05k_combo Small_147741-05k

A750E, A750F, A760E, A760F, A760H, A761E, A960E, A960F, AB60E, AB60F

Oversized Solenoid Modulator Valve Kit

Part No. 147741-05K

  • Valve
  • End Plug

Complaint:

  • Bang shifts
  • Bind-up
  • Low control pressure
  • Low cooler flow
  • Shift concerns
  • Solenoid codes
  • TCC cycling
  • TCC slip

Cause:

Solenoid modulator valve bore wear allows erratic solenoid supply pressure.


Correction:

Recover hydraulic control and restore normal solenoid supply pressure by reconditioning the bore and installing Sonnax oversized solenoid modulator valve kit.

Toyota vehicles equipped with listed transmissions may exhibit driveability problems caused by erratic oil pressure delivered to various solenoids. Low cooler flow, solenoid codes, impaired TCC operation, and various shift concerns are common results of this abnormal pressure. As the OE solenoid modulator valve oscillates and strokes over time, bore wear occurs that prevents proper regulation of solenoid supply pressure, flooding or starving the solenoids and causing erratic solenoid operation. Reconditioning the bore and installing Sonnax oversized solenoid modulator valve kit 147741-05K shores up the hydraulic integrity of this circuit for renewed solenoid performance and trouble-free shifting.

  • Hardcoat anodized aluminum valve combats premature wear
  • Annular groove helps center valve in bore to reduce future side-load wear

Required Tools

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.

  • Test Locations

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Valve Body Layouts

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.

Valve Body Layout Toyota A760E/F/H Series
Valve Body Layout Toyota A750E/F Series

Related Tech Articles

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