NHTSA ID Number: 10162255
Manufacturer Communication Number: T-SB-0171-16-Rev
TSB/Document Date: 2019-07-08
Summary
TSB: REVISION NOTICE May 20, 2019 Rev2: ? Applicability has been updated to include 2018 ? 2019 model year Tacoma vehicles. September 1, 2017 Rev1: ? Applicability has been updated to include 2017 model year Tacoma vehicles. ? The Introduction, Production Change Information, and Repair Procedure sections have been updated. Any previous printed versions of this bulletin should be discarded. Some 2016 ? 2019 model year Tacoma vehicles equipped with an automatic transmission may exhibit a vibration felt in the seat, floorboard, and/or steering wheel between 10 ? 30 mph, caused by a driveline vibration under deceleration. 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.
1
Up
2
Front
2
Front
3
3
Pinion Flange
© 2019 Toyota Motor Sales, USA
T-SB-0171-16
Rev2
December 6, 2016
Page 7 of 14
Driveline Vibration Under Deceleration Around 10 - 30 mph
Repair Procedure (continued)
8. Measure the pinion flange angle (F/A) – Large Flange Type.
NOTE
Make sure to wipe off the area BEFORE taking the pinion flange measurement.
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 5.
Figure 5.
Figure 6.
(2) Record the pinion flange angle (F/A).
1
Up
2
Passenger Side of Vehicle
3
Figure 7.
© 2019 Toyota Motor Sales, USA
T-SB-0171-16
Rev2
December 6, 2016
Page 8 of 14
Driveline Vibration Under Deceleration Around 10 - 30 mph
Repair Procedure (continued)
9. 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 – 2019 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.
© 2019 Toyota Motor Sales, USA
T-SB-0171-16
Rev2
December 6, 2016
Page 9 of 14
Driveline Vibration Under Deceleration Around 10 - 30 mph
Repair Procedure (continued)
10. 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
Up Arrow (Positive)
2
© 2019 Toyota Motor Sales, USA
Dow n Arrow (Negative)
T-SB-0171-16
Rev2
December 6, 2016
Page 10 of 14
Driveline Vibration Under Deceleration Around 10 - 30 mph
Repair Procedure (continued)
11. Measure the propeller shaft angle (P/A).
A. Rotate the pinion flange (as shown in
Figure 10) to the correct position
(as shown in Figure 11).
Figure 10.
2
1
1
90°
2
Up
© 2019 Toyota Motor Sales, USA
T-SB-0171-16
Rev2
December 6, 2016
Page 11 of 14
Driveline Vibration Under Deceleration Around 10 - 30 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
Figure 13.
© 2019 Toyota Motor Sales, USA
T-SB-0171-16
Rev2
December 6, 2016
Page 12 of 14
Driveline Vibration Under Deceleration Around 10 - 30 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.
12. 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.
13. Verify the vehicle’s model code (Katashiki).
The model code can be found on the
Vehicle Identification Label in the driver door
jamb as shown.
Figure 14.
© 2019 Toyota Motor Sales, USA
T-SB-0171-16
Rev2
December 6, 2016
Page 13 of 14
Driveline Vibration Under Deceleration Around 10 - 30 mph
Repair Procedure (continued)
14. After the joint angle, spring type, and model code have been verified, refer to the table below to
determine if the joint angle is in specification.
Is the joint angle in specification?
YES — This bulletin does NOT apply. Continue diagnosis using the applicable
Repair Manual.
NO — Continue to step 15.
Table 2.
MODEL CODE
CAB TYPE
GRN305L-PRTLHA
GRADE
Limited
Double
GRN305L-PRTS HA
Any
NOT
Off-Road Package
GRN305L-CRTS HA
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
NOT
Off-Road Package
© 2019 Toyota Motor Sales, USA
-0.6° to +1.4°
Standard
+1.67° to +3.67°
T-SB-0171-16
Rev2
December 6, 2016
Page 14 of 14
Driveline Vibration Under Deceleration Around 10 - 30 mph
Repair Procedure (continued)
15. 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-PRTS HA
Any
NOT Off-Road Package
GRN305L-CRTS HA
Access
Off-Road Package
NOT 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”
NOTE
Fasteners for shocks and leaf spring bushings should be tightened. Then, torque for these joints
should be set while the vehicle is on the ground.
16. Test-drive the vehicle between 15 – 25 mph and confirm the level of vibration has improved
under deceleration or acceleration.
© 2019 Toyota Motor Sales, USA
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TSB/Document ID: T-SB-0171-16-Rev
Replacement Service Bulletin Number:
MFR Communication Date: 2019-05-20
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: POWER TRAIN
MFR Component System:
MFR Component Subsystem:
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