U151E U250E Vac

U151E-U250E-Vac U151E-U250E-Vac U151E-U250E-Vac 440 file tech_resource uploads sonnax-dev

2017-01-26

: Sonnax U151E-U250E-Vac U151E-U250E-Vac 114 pdf pdf uploads

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TOYOTA U151E/F, U250E

Zip Kit® U151E-U250E-ZIP Available for this unit.

TIME TESTED • INDUSTRY TRUSTED

Critical Wear Areas & Vacuum Test Locations
NOTE: OE valves are shown in rest position and should be tested in rest position unless otherwise indicated. Test locations are pointed to
with an arrow. Springs are not shown for visual clarity. Low vacuum reading indicates wear.

20

15

10

25

5

0
30
VACUUM
TEST

Lower Valve Body – Bottom Side • U
 250E Shown Here
Click on Sonnax part numbers to see more information.
4-5 Shift Valve

B2 (Low/Reverse) Switch Valve

•	Delayed 3rd
•	UD/C3 Clutch burned
•	Delayed or no 5th gear

•	B2 Brake clutches burned
•	Delayed Reverse
•	Loss of engine braking in manual low

B2 (Low/Reverse) Apply
Control Plunger
•	B2 Brake clutches burned
•	Delayed Reverse
•	No engine braking in manual low
Replace with Sonnax Part No.
27741-06K

B1 (2nd) Apply
Control Plunger
•	B1 Brake clutches burned
•	2-3 or 4-3 Bind-up
•	Harsh upshifts
Replace with Sonnax Part No.
27741-04K
NOTE: Seal port on opposite side when testing.

Boost Valve
•	Low line rise in Drive
•	Soft shifts
•	High line pressure in Reverse
Replace with Sonnax Part No.
27741-01K

Clutch Apply Control Valve
•	Flare shifts & bind-ups
•	Burned Forward/C1 Clutch, Direct/C0 Clutch
& 2nd/B1 Brake
Replace with Sonnax Part No.
27741-18K Requires F-27741-TL18 & VB-FIX
NOTE: Stroke valve to ensure it is not stuck.

©2017 Sonnax Industries, Inc.
800-843-2600 • 802-463-9722 • F: 802-463-4059 • www.sonnax.com

U151E-U250E-Vac-Locations 01-03-17
Page 1

TOYOTA U151E/F, U250E

Zip Kit® U151E-U250E-ZIP Available for this unit.

TIME TESTED • INDUSTRY TRUSTED

Critical Wear Areas & Vacuum Test Locations

20

15

10

25

NOTE: OE valves are shown in rest position and should be tested in rest position unless otherwise indicated. Test locations are pointed to
with an arrow. Springs are not shown for visual clarity. Low vacuum reading indicates wear and Sonnax parts noted for replacement.

5

0
30
VACUUM
TEST

Lower Valve Body – Bottom Side • U
 250E Shown Here
Click on Sonnax part numbers to see more information.

End Plugs, Multiple Locations

B2 (Low/Reverse) Switch Valve

•	Shift concerns
•	Clutch failure

•	B2 Brake clutches burned
•	Delayed Reverse
•	Loss of engine braking in manual low

Replace with Sonnax Part No.
27741-20K
NOTE: Two Locations =



Pressure Regulator Valve
•	Low/High line pressure
•	Soft/Harsh shifts
•	Clutch & brake failures
•	High line pressure in Reverse
•	Low converter pressure
Replace with Sonnax Part No.
27741-08K Requires 57917E-TL8



Clutch Apply Control Valve
•	Flare shifts and bind-ups
•	Burned Forward/C1 Clutch, Direct/C0 Clutch
& 2nd/B1 Brake



Replace with Sonnax Part No.
27741-18K Requires F-27741-TL18 & VB-FIX
NOTE: Stroke valve to ensure it is not stuck.

B1 (2nd) Apply
Control Plunger
•	B1 Brake clutches burned
•	2-3 or 4-3 Bind-up
•	Harsh 1 through 4 maneuver shifts
Replace with Sonnax Part No.
27741-04K
NOTE: Seal this port and test on opposite side.

©2017 Sonnax Industries, Inc.
800-843-2600 • 802-463-9722 • F: 802-463-4059 • www.sonnax.com

U151E-U250E-Vac-Locations 01-03-17
Page 2

TOYOTA U151E/F, U250E

Zip Kit® U151E-U250E-ZIP Available for this unit.

TIME TESTED • INDUSTRY TRUSTED

Critical Wear Areas & Vacuum Test Locations

20

NOTE: OE valves are shown in rest position and should be tested in rest position unless otherwise indicated. Test locations are pointed to
with an arrow. Springs are not shown for visual clarity. Low vacuum reading indicates wear.

Upper Valve Body – Bottom Side • U
 250E Shown Here
Solenoid Modulator
Valve

End Plugs,
Multiple Locations

•	Harsh/Flare upshifts
• TCC slip or cycling
• Low cooler flow/overheating

• Shift concerns • Clutch failure

5

Lockup Relay Valve
• Apply & release concerns
• TCC codes
• Burnt converter overheating

27741-20K
NOTE: Eight locations =



Lockup Control
Plunger Assembly
•	Burnt converter
•	TCC apply & release concerns
•	TCC codes

B2 (Low/Reverse)
Control Valve
•	Burned B2 brake
•	Delayed Reverse
•	Delayed engagement in
manual 1st

B3 Orifice
Control Valve

10

0
30
VACUUM
TEST

Click on Sonnax part numbers
to see more information.

Replace with Sonnax Part No.

Replace with Sonnax Part No.
27741-13K
Requires F-27741-TL13 & VB-FIX

15

25



Replace with Sonnax Part No.

57917E-03K
NOTE: Vacuum testing of lockup control
plunger assembly not possible while in casting.
Perform visual inspection to identify wear.





• UD/B3 Brake clutches burned
• Shift concerns

B1 (2nd)
Control Valve

Replace with Sonnax Part No.
27741-16K
Requires F-15741-TL18 & VB-FIX

•	B1 Brake clutches burned
•	Slipping/Flares in 2nd, 4th
& 5th

NOTE: Stroke valve to ensure it’s not stuck.

Accumulator
Control Valve
• Shift concerns
• Burnt clutches & brakes







C0 (Direct)
Control Valve
• C0 Clutch burned
• Slipping/Flares in 3rd,
4th & 5th





57917E-16K
Requires F-57917E-TL16 & VB-FIX

NOTE: Seal these ports and test on
opposite side.

Replace with Sonnax Part No.
57917E-19K

Replace with Sonnax Part No.
57917E-19K

Replace with Sonnax Part No.

•	C1 Clutch burned
•	Delayed engagement
•	Slipping/Flares in 1st, 2nd
& 3rd

• C0 Clutch burned
• Slipping/Flares in 3rd, 4th & 5th

• B1 Brake clutches burned
• Slipping/Flares in 2nd, 4th & 5th

•	Harsh lockup
•	TCC apply & release
concerns
•	Burnt converter

C1 (Forward)
Control Valve

C0 (Direct)
Accumulator Piston

B1 (2nd) Accumulator Piston

Secondary
Pressure
Regulator Valve

Solenoid
Relay Valve
• Shift concerns

©2017 Sonnax Industries, Inc.
800-843-2600 • 802-463-9722 • F: 802-463-4059 • www.sonnax.com

C1 (Forward) Accumulator Piston
•	C1 Clutch burned • Delayed engagement
•	Slipping/Flares in 1st, 2nd & 3rd
Replace with Sonnax Part No.

57917E-19K
U151E-U250E-Vac-Locations 01-03-17
Page 3

TOYOTA U151E/F, U250E

Zip Kit® U151E-U250E-ZIP Available for this unit.

TIME TESTED • INDUSTRY TRUSTED

Critical Wear Areas & Vacuum Test Locations

20

15

10

25

NOTE: OE valves are shown in rest position and should be tested in rest position unless otherwise indicated. Test locations are pointed to
with an arrow. Springs are not shown for visual clarity. Low vacuum reading indicates wear.

5

0
30
VACUUM
TEST

Upper Valve Body – Top Side • U250E Shown Here
Lockup Control Valve
•	TCC apply & release concerns
•	TCC codes
•	Burnt converter
Replace with Sonnax Part No.
27741-25K
Requires F-27741-TL25 & VB-FIX

NOTE: Place
clay here to
isolate circuit.

C1 (Forward) Control Valve
•	C1 Clutch burned
•	Delayed engagement
•	Slipping/Flares in 1st, 2nd and 3rd
NOTE: Seal ports on opposite side when testing.

©2017 Sonnax Industries, Inc.
800-843-2600 • 802-463-9722 • F: 802-463-4059 • www.sonnax.com

U151E-U250E-Vac-Locations 01-03-17
Page 4

TOYOTA U151E/F, U250E

Zip Kit® U151E-U250E-ZIP Available for this unit.

TIME TESTED • INDUSTRY TRUSTED

OE Exploded View
Upper & Lower Valve Body • U250E Shown Here

Installed on Top Side

Upper Valve Body Descriptions

I.D. No.

Description

201

Lockup Relay Valve

202

Lockup Control Valve & Plunger
Valve Assembly

203

B1 Control Valve

204

Secondary Regulator Valve

205

C1 Control Valve

206

Solenoid Relay Valve

207

C0 Control Valve

208

Accumulator Control Valve

209

B3 Orifice Control Valve

210

B2 Control Valve

211

Solenoid Modulator Valve

212

C0 Accumulator Piston

213

B1 Accumulator Piston

214

C1 Accumulator Piston

Upper Valve Body
Bottom Side Shown

211

201

210

202
209

203
208
204

207
205
206
Accumulator Pistons
Installed on Top Side

213
214

Lower Valve Body Descriptions

I.D. No.

Description

101

Manual Valve

102

B2 Switch Valve & Plunger Valve

103

4-5 Shift Valve

104

B1 Switch Valve & Plunger
Valve Assembly

105

Main Pressure Regulator Valve
& Boost Valve Assembly

106

Clutch Apply Control Valve

Installed on
Bottom Side

©2017 Sonnax Industries, Inc.
800-843-2600 • 802-463-9722 • F: 802-463-4059 • www.sonnax.com

212

Lower Valve Body
Top Side Shown

101

102
103
104
105
106

U151E-U250E-Vac-Locations 01-03-17
Page 5
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