NHTSA ID Number: 10227899
Manufacturer Communication Number: T-SB-0124-20 Rev
TSB/Document Date: 2022-12-19
Summary
TSB: Some 2016 ? 2023 model year Tacoma vehicles equipped with an automatic transmission (6AT) may exhibit a vibration under deceleration (coasting or braking) typically between 30 ? 10 mph. This vibration is felt in the seat
, floorboard, and/or steering wheel. Follow the Repair Procedure in this bulletin to address this condition
3
Large Flange
3
Small Flange
© 2022 Toyota Motor Sales, USA
Page 9 of 16
T-SB-0124-20
Rev1
December 15, 2020
Page 10 of 16
Driveline Vibration Under Deceleration Between 30 - 10 mph
Repair Procedure (continued)
9. Measure the pinion flange angle (F/A) —
Large Flange Type.
Figure 6. Gauge Placement in Relation to Vehicle
A. Place the digital angle gauge against
the flange surface.
(1) Ensure the digital angle gauge is
firmly against the flange to obtain
an accurate pinion flange angle
as shown.
2
1
3
(2) Record the pinion flange
angle (F/A).
1
Up
2
Passenger Side of Vehicle
3
Pinion Flange
Figure 7.
© 2022 Toyota Motor Sales, USA
T-SB-0124-20
Rev1
December 15, 2020
Page 11 of 16
Driveline Vibration Under Deceleration Between 30 - 10 mph
Repair Procedure (continued)
10. Measure the pinion flange angle (F/A) — Small Flange Type.
A. Remove the propeller shaft.
Refer to TIS, applicable model and model year Repair Manual:
•
2016 – 2021 Tacoma:
Engine/Hybrid System – Propeller Shaft – “Propeller Shaft: Propeller Shaft Assembly
(for 4WD): Removal”
•
2022 – 2023 Tacoma:
Engine/Hybrid System – Propeller Shaft – “Propeller Shaft: Propeller Shaft Assembly
(for 4WD): Removal”
•
2016 – 2023 Tacoma:
Engine/Hybrid System – Propeller Shaft – “Propeller Shaft: Propeller Shaft Assembly
(for 2WD): Removal”
B. Place the digital angle gauge against the flange surface.
Ensure the digital angle gauge is firmly against the flange to obtain an accurate pinion
flange angle as shown.
Figure 8.
© 2022 Toyota Motor Sales, USA
T-SB-0124-20
Rev1
December 15, 2020
Page 12 of 16
Driveline Vibration Under Deceleration Between 30 - 10 mph
Repair Procedure (continued)
11. Measure the propeller shaft to pinion joint angle (J/A).
NOTE
ALL measurements MUST be taken from the passenger side of the vehicle facing the driver side.
Refer to Figure 9 to ensure that the angles measured have the correct positive (+) or
negative (–) values assigned.
• An arrow pointing up indicates a positive (+) angle. In the example on the left, the angle
measured is a positive 1.15 (+1.15).
• An arrow pointing down indicates a negative (–) angle. In the example on the right, the angle
measured is a negative 0.95 (–0.95).
Figure 9.
1
2
Up Arrow (Positive)
12. Measure the propeller shaft angle (P/A).
Down Arrow (Negative)
Figure 10.
A. Position the flange to match the
orientation shown.
2
1
1
90°
2
Up
© 2022 Toyota Motor Sales, USA
T-SB-0124-20
Rev1
December 15, 2020
Page 13 of 16
Driveline Vibration Under Deceleration Between 30 - 10 mph
Repair Procedure (continued)
B. Use the digital angle gauge and measure the angle of the rear section of the two-piece
propeller shaft.
Ensure the digital angle gauge is placed along the centerline of the propeller shaft
as shown in Figure 11.
Figure 11. CORRECT Placement
of Digital Angle Gauge
Figure 12. INCORRECT Placement
of Digital Angle Gauge
NOTE
The gauge face needs to face the passenger side.
Figure 13.
© 2022 Toyota Motor Sales, USA
T-SB-0124-20
Rev1
December 15, 2020
Page 14 of 16
Driveline Vibration Under Deceleration Between 30 - 10 mph
Repair Procedure (continued)
C. Record the propeller shaft angle (P/A).
Table 1. Joint Angle Worksheet (Pinion Flange Angle Minus Propeller Shaft Angle = Joint Angle)
PINION FLANGE ANGLE
–
PROPELLER SHAFT ANGLE
=
JOINT ANGLE
F/A
–
P/A
=
J/A
NOTE
Joint angle (J/A) can be a negative (–) value.
13. Verify if the vehicle is equipped with standard or firm ride suspension.
Look up the factory option codes (accessories) in vehicle history on TIS.
Does the vehicle have option codes CW, OF, OC, PT, or PY?
•
YES — The vehicle has firm ride suspension.
•
NO — The vehicle has standard suspension.
14. Record the model code for use in the
next step.
The model code can be found on the
Vehicle Identification Label in the driver
doorjamb as shown.
Figure 14.
1
1
© 2022 Toyota Motor Sales, USA
Model Code
T-SB-0124-20
Rev1
December 15, 2020
Page 15 of 16
Driveline Vibration Under Deceleration Between 30 - 10 mph
Repair Procedure (continued)
15. After the joint angle, spring type, and model code have been recorded, refer to the table below
to determine if the joint angle is in specification.
Table 2.
DRIVETRAIN
CAB
TYPE
MODEL CODE
GRN305L-PRTLHA
GRADE
Limited
Double
GRN305L-PRTSHA
Any
4WD
Any, Excluding
Off-Road Package
GRN305L-CRTSHA
Access
Off Road Package
Any
GRN325L-PRTLHA
Limited
Double
2WD
GRN325L-PRTSHA
GRN325L-CRTSHA
Any
Access
Any
TYPE
JOINT ANGLE
RANGE
SPECIFICATION
Firm
+1.41° to +3.41°
Standard
+1.38° to +3.38°
Firm
+1.41° to +3.41°
Standard
+1.38° to +3.38°
Firm
+1.7° to +3.7°
Standard
-0.6° to +1.4°
+1.67° to +3.67°
Firm
+1.86° to +3.86°
Standard
+1.22° to +3.22°
Firm
+1.86° to +3.86°
Standard
+1.22° to +3.22°
Firm
+1.46° to +3.46°
Standard
+1.46° to +3.46°
Is the joint angle in specification?
•
YES — Continue to step 16.
•
NO — Go to step 17.
16. Test-drive the vehicle between 10 – 30 mph and confirm the level of vibration has
improved under deceleration or acceleration.
Did the vibration condition improve?
•
YES — STOP! The applicable repair steps have been completed.
•
NO — This bulletin does NOT apply. Continue diagnosis using the applicable
Repair Manual.
© 2022 Toyota Motor Sales, USA
T-SB-0124-20
Rev1
December 15, 2020
Page 16 of 16
Driveline Vibration Under Deceleration Between 30 - 10 mph
Repair Procedure (continued)
17. Replace the leaf spring using the part information in the following table:
Table 3.
DRIVETRAIN
MODEL CODE
GRN305L-PRTLHA
4WD
GRN305L-PRTSHA
GRN305L-CRTSHA
GRN325L-PRTLHA
2WD
GRN325L-PRTSHA
GRN325L-CRTSHA
CAB TYPE
Double
Access
Double
Access
GRADE
Limited
Any
Any
Limited
Any
Any
LH PART NUMBER
RH PART NUMBER
48220-04481
48210-04841
48220-04472
48210-04832
48220-04481
48210-04841
48220-04472
48210-04832
Figure 15.
NOTICE
When tightening the U-bolt nuts, make sure
to set to the following torque:
Torque: 60 N*m (610 kgf*cm, 44 ft*lbf)
Refer to TIS, applicable model and model year
Repair Manual:
•
•
•
2016 – 2019 Tacoma:
Suspension – Rear Suspension –
“Suspension: Rear Leaf Spring:
Removal / Installation”
2020 – 2021 Tacoma:
Suspension – Rear Suspension –
“Suspension: Rear Leaf Spring:
Removal / Installation”
2022 – 2023 Tacoma:
Suspension – Rear Suspension –
“Suspension: Rear Leaf Spring:
Removal / Installation”
1
1
z
U-bolt Nuts
NOTE
Per the applicable Repair Manual, fasteners for shocks and leaf spring bushings should be
pre-tightened while the vehicle is lifted. Final torque should be set while the vehicle is on the ground.
18. Test-drive the vehicle and confirm that the level of vibration has improved under deceleration
between 30 – 10 mph.
© 2022 Toyota Motor Sales, USA
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TSB/Document ID: T-SB-0124-20 Rev
Replacement Service Bulletin Number:
MFR Communication Date: 2022-11-28
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: SUSPENSION
MFR Component System:
MFR Component Subsystem:
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