T-SB-0124-20

T-SB-0124-20
December 15, 2020
Driveline Vibration Under Deceleration Around 30 - 10
mph
Service
Category
Drivetrain
Section
Drive Shaft/Propeller Shaft
Market USA
Applicability
YEAR(S)
MODEL(S)
ADDITIONAL INFORMATION
2016 - 2021
Tacoma
VDS(s): CZ5AN, GZ5AN, SZ5AN
Engine(s): 2GR
Drive Type(s): 4WD
Transmission(s): 6AT
SUPERSESSION NOTICE
The information contained in this bulletin supersedes Service Bulletin No. T-SB-0071-19.
 Applicability has been updated to include 2020 – 2021 model year Tacoma vehicles.
 The entire bulletin has been updated.
Service Bulletin No. T-SB-0071-19 is obsolete and any printed versions should be discarded.
Introduction
Some 2016 – 2021 model year Tacoma vehicles equipped with an automatic transmission may
exhibit a vibration under deceleration (coasting or braking) 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.
NOTE
 This Service Bulletin ONLY applies to 4WD models equipped with 6AT. Do NOT use the spring part
number found in the Service Bulletin for ANY manual transmission vehicles or PreRunner models.
This could lead to NEW, currently nonexistent issues.
 If the vehicle is installed with an aftermarket suspension/body lift or leveling kit, this Service Bulletin
does NOT apply.
© 2020 Toyota Motor Sales, USA
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Driveline Vibration Under Deceleration Around 30 - 10 mph
Production Change Information

This bulletin applies to all 2016 – 2021 model year Tacoma vehicles NOT equipped with the
TRD Off-Road package option.

This bulletin applies to 2016 model year Tacoma vehicles equipped with the TRD Off-Road
package option produced BEFORE the Production Change Effective VINs shown below.
CAB TYPE
PRODUCTION CHANGE EFFECTIVE VIN
5TFGZ5AN#GX040536
Double
3TMGZ5AN#GM039554
5TFCZ5AN#GX040121
3TMCZ5AN#GM039538
Access
5TFSZ5AN#GX017523
NOTE
ALL TRD Off-Road package vehicles produced AFTER the effective VIN change use the same springs in
production as the countermeasure part numbers listed in this Service Bulletin. Do NOT follow this Service
Bulletin for TRD Off-Road equipped vehicles produced AFTER production change effective VINs provided
in the production change information table.
© 2020 Toyota Motor Sales, USA
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Driveline Vibration Under Deceleration Around 30 - 10 mph
Warranty Information
OP CODE
DESCRIPTION
TIME
OFP
SU1903
Install Steering Wheel Damper
and Measure Joint Angle
1.1
(Damper = 0.6)
(Measure Angles = 0.5)
45816-60030
2.1
48210-04700
48210-04701
48210-04810
48210-04811
48210-04710
48210-04711
48220-04340
48220-04341
48220-04450
48220-04451
48220-04350
48220-04351
SU1904
Install Steering Wheel Damper,
Measure Joint Angle,
and R & R Leaf Springs
T1
T2
9B
57
APPLICABLE WARRANTY
 This repair is covered under the Toyota Basic Warranty. This warranty is in effect for
36 months or 36,000 miles, whichever occurs first, from the vehicle’s in-service date.
 Warranty application is limited to occurrence of the specified condition described in
this bulletin.
© 2020 Toyota Motor Sales, USA
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Driveline Vibration Under Deceleration Around 30 - 10 mph
Parts Information
PART NUMBER
CAB TYPE
Double
Access
All
PART NAME
QTY
48210-04840
Spring Assy, RR RH
1
48220-04340
48220-04341
48220-04450
48220-04451
48220-04350
48220-04351
48220-04480
Spring Assy, RR LH
1
48210-04700
48210-04701
48210-04810
48210-04811
48210-04710
48210-04711
48210-04830
Spring Assy, RR RH
1
48220-04340
48220-04341
48220-04450
48220-04451
48220-04350
48220-04351
48220-04470
Spring Assy, RR LH
1
45713-35040
Damper, Steering Shake
1
90080-15079
Screw, With Washer
2
PREVIOUS
NEW
48210-04700
48210-04701
48210-04810
48210-04811
48210-04710
48210-04711
Required Tools & Equipment
SPECIAL SERVICE TOOLS (SST)
PART NUMBER
QTY
Digital Angle Gauge*
01815-00102
1
*Essential SST.
NOTE
Additional SSTs may be ordered by calling 1-800-933-8335.
© 2020 Toyota Motor Sales, USA
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Driveline Vibration Under Deceleration Around 30 - 10 mph
Repair Procedure
1. Confirm the condition exists.
A. Does the vehicle exhibit a vibration under deceleration (coasting or braking) between
30 – 10 mph?

YES — Continue to substep B.

NO — This bulletin does NOT apply. Continue diagnosis using the applicable
Repair Manual.
B. Use the following method to determine if the driveline vibration is normal or if this
bulletin applies.
(1) Remove the rear driveshaft.
(2) Shift into 4WD HI.
(3) Test-drive the vehicle.
After using that method, does the vehicle exhibit a vibration?


YES — This bulletin does NOT apply. Continue diagnosis using the applicable
Repair Manual.
NO — Continue to step 2.
2. Remove the steering wheel pad.
CAUTION
Wait at LEAST 90 seconds AFTER disconnecting the cable from the negative (–) battery
terminal to disable the SRS system.
Refer to the TIS, applicable model and model year Repair Manual:

2016 / 2017 / 2018 / 2019 / 2020 / 2021 Tacoma:
Vehicle Interior – Supplemental Restraint Systems – “Supplemental Restraint Systems:
Steering Pad: Removal”
© 2020 Toyota Motor Sales, USA
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Driveline Vibration Under Deceleration Around 30 - 10 mph
Repair Procedure (continued)
3. Remove the steering wheel switch wire
harness retainer bracket (ONLY for
vehicles with steering wheel
mounted switches).
Figure 1.
1
4. Install the steering wheel damper using
two NEW screws in the locations shown.
Torque: 2.35 N*m (24 kgf*cm, 20.8 in*lbf)
Steering Wheel Switch Wire Harness
Retainer Bracket
Figure 2.
NOTICE
When disconnecting ANY airbag
connector, take care not to damage the
airbag wire harness.
NOTE
Secure the steering wheel switch wires to
the steering wheel damper bracket hooks
as shown.
1
Damper
2
Steering Wheel Switch Wire Harness
3
Damper Bracket Wire Retainer Hook
4
Screw
5
Driver Side Airbag Wire Harness
© 2020 Toyota Motor Sales, USA
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Driveline Vibration Under Deceleration Around 30 - 10 mph
Repair Procedure (continued)
5. Install the steering wheel pad.
Refer to TIS, applicable model and model year Repair Manual:

2016 / 2017 / 2018 / 2019 / 2020 / 2021 Tacoma:
Vehicle Interior – Supplemental Restraint Systems – “Supplemental Restraint Systems:
Steering Pad: Installation”
6. Raise the vehicle using a drive-on hoist or wheel alignment rack.
NOTE
Vehicle suspension MUST be at ride height.
7. Set up the digital angle gauge.
A. Clean the gauge mounting surfaces of ANY dust and debris.
B. Place the gauge with the screen facing the passenger side of the vehicle up/down.
NOTE
The digital angle gauge is directional and must be placed with the screen facing the passenger
side of the vehicle for the up/down indicator to properly display the angle. The tool indicates a
positive or negative angle based on the right side of the tools vertical location.
C. Power on the digital angle gauge and
set it to “Absolute Mode.” ABS will be
displayed in the upper right corner of the
display as shown in Figure 3.
Figure 3. Digital Angle Gauge
1
1
© 2020 Toyota Motor Sales, USA
Indicates Absolute Mode
T-SB-0124-20
December 15, 2020
Driveline Vibration Under Deceleration Around 30 - 10 mph
Repair Procedure (continued)
8. Verify which flange type the vehicle is equipped with.

Large flange (Figure 4) — Continue to step 9.

Small flange (Figure 5) — Go to step 10.
NOTE
Make sure to wipe off the area BEFORE taking the pinion flange measurement.
Figure 4.
Figure 5.
1
Up
1
Up
2
Front
2
Front
3
Large Flange
3
Small Flange
© 2020 Toyota Motor Sales, USA
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Driveline Vibration Under Deceleration Around 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 in Figure 6.
2
1
3
(2) Record the pinion flange
angle (F/A).
1
Up
2
Passenger Side of Vehicle
3
Pinion Flange
Figure 7.
© 2020 Toyota Motor Sales, USA
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Driveline Vibration Under Deceleration Around 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”
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.
© 2020 Toyota Motor Sales, USA
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Driveline Vibration Under Deceleration Around 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 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 the match the
orientation shown in Figure 10.
2
1
1
90°
2
Up
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Driveline Vibration Under Deceleration Around 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.
© 2020 Toyota Motor Sales, USA
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Driveline Vibration Under Deceleration Around 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.
Figure 14.
The model code can be found on the
Vehicle Identification Label in the driver
doorjamb as shown in Figure 14.
1
1
© 2020 Toyota Motor Sales, USA
Model Code
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Driveline Vibration Under Deceleration Around 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.
MODEL CODE
CAB TYPE
GRN305L-PRTLHA
GRADE
Limited
Double
GRN305L-PRTSHA
Any
Any, Excluding
Off-Road Package
GRN305L-CRTSHA
Access
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°
Off Road Package
Any, Excluding
Off-Road Package
-0.6° to +1.4°
Standard
+1.67° to +3.67°
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.
© 2020 Toyota Motor Sales, USA
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Driveline Vibration Under Deceleration Around 30 - 10 mph
Repair Procedure (continued)
17. Replace the leaf spring using the part information in the following table:
Table 3.
MODEL CODE
CAB TYPE
GRADE
GRN305L-PRTLHA
LH PART NUMBER
RH PART NUMBER
48220-04480
48210-04840
48220-04470
48210-04830
Limited
Double
GRN305L-PRTSHA
Any
Any, Excluding
Off-Road Package
GRN305L-CRTSHA
Access
Off-Road Package
Any, Excluding
Off-Road Package
Figure 15.
NOTE
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”
1
1
z
U-bolt Nuts
NOTE
Per the 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.
© 2020 Toyota Motor Sales, USA