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Symptoms:
  • Burnt converter
  • Harsh downshifts
  • Harsh engagement
  • Lockup shudder
  • TCC codes
  • TCC cycling
Cause:

Wear at the TCC control plunger sleeve allows pressure loss that causes TCC problems. Wear at the low brake switch boost sleeve causes harsh downshifts.

Correction:

Restore proper TCC or Low brake function by installing Sonnax TCC control valve/Low brake switch boost valve kit.

JR710E, JR711E, JR712E, RE5R05A, RE7R01A

TCC Control Valve Kit/Low Brake Switch Boost Valve Kit

Part No.

63741-05K

TCC Control Valve Kit/Low Brake Switch Boost Valve Kit
  • 63741-05k_combo_re7r01a

  • 63741-05k_combo_re5r05a

  • TCC Control Valve Kit/Low Brake Switch Boost Valve Kit

  • 63741-05k_measurecompare

  • 63741-05k_details

Small_63741-05k_combo_re7r01a Small_63741-05k_combo_re5r05a Small_63741-05k Small_63741-05k_measurecompare Small_63741-05k_details

JR710E, JR711E, JR712E, RE5R05A, RE7R01A

TCC Control Valve Kit/Low Brake Switch Boost Valve Kit

Part No. 63741-05K

  • Valve
  • Sleeve

RE5R05A: TCC control valve kit (1st and 2nd design casting only)
RE7R01A, JR710E, JR711E, JR712E: Low brake switch boost valve kit
Also fits TCC control bore in Kia A5SR1/A5SR2 valve bodies.

Complaint:

  • Burnt converter
  • Harsh downshifts
  • Harsh engagement
  • Lockup shudder
  • TCC codes
  • TCC cycling

Cause:

Wear at the TCC control plunger sleeve allows pressure loss that causes TCC problems. Wear at the low brake switch boost sleeve causes harsh downshifts.


Correction:

Restore proper TCC or Low brake function by installing Sonnax TCC control valve/Low brake switch boost valve kit.

Nissan/Infiniti vehicles equipped with 1st and 2nd design RE5R05A valve bodies may have TCC concerns such as lockup shudder, premature or bumpy apply, slippage and/or a burnt converter. These issues can be caused by wear in the TCC control sleeve, which allows apply pressure leakage.

Vehicles equipped with RE7R01A, JR710E, JR711E and JR712E transmissions may display harsh downshifts caused by wear and leakage in the Low brake switch boost sleeve. All above issues can be solved by installing Sonnax TCC control valve/Low brake switch boost valve kit 63741-05K into the appropriate bore.

  • Drop-in part, no special tools required
  • Sleeve is manufactured from highly wear-resistant aluminum alloy
  • Hardcoat anodized aluminum valve combats premature wear
WARNING:

The RE5R05A 3rd and 4th design TCC control plunger valve has a larger diameter (.282") than the valve in this kit. Installing 63741-05K into a 3rd or 4th design application will cause excessive apply pressure, resulting in drivability concerns related to a lack of power and harsh converter apply. Do not install this kit into the TCC control bore of a 3rd or 4th design casting!

Related Parts

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
  • 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 Jatco RE5R05A

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