NHTSA ID Number: 10220173
Manufacturer Communication Number: TSB005222
TSB/Document Date: 2022-09-15
Summary
TSB: Some 2021 ? 2022 model year Tacoma vehicles may exhibit a condition in which the air conditioning system has poor cooling performance sometimes accompanied by refrigerant vapor visible from under the vehicle. This condition is caused by the pressure relief valve opening and purging refrigerant at a pressure below specification. Follow the Repair Procedure in this bulletin to address this condition
T-SB-0052-22
May 26, 2022
Poor Air Conditioning Cooling Performance Compressor Pressure Relief Valve Leak
Service
Category
Vehicle Interior
Section
Heating/Air Conditioning
Market USA
Applicability
YEAR(S)
MODEL(S)
2021 - 2022
Tacoma
ADDITIONAL INFORMATION
Introduction
Some 2021 – 2022 model year Tacoma vehicles may exhibit a condition in which the air
conditioning system has poor cooling performance sometimes accompanied by refrigerant vapor
visible from under the vehicle. This condition is caused by the pressure relief valve opening and
purging refrigerant at a pressure below specification. Follow the Repair Procedure in this bulletin to
address this condition.
© 2021 Toyota Motor Sales, USA
Page 1 of 6
T-SB-0052-22
May 26, 2022
Page 2 of 6
Poor Air Conditioning Cooling Performance - Compressor Pressure Relief
Valve Leak
Production Change Information
This bulletin applies to vehicles produced BEFORE the Production Change Effective VINs
shown below.
MODEL
PLANT
DRIVETRAIN
PRODUCTION CHANGE EFFECTIVE VIN
3TYRZ5CN#NX013091
2WD
3TYEZ5CN#NX013091
3TYAZ5CN#NX013091
3TYBZ5DN#NX001196
2GR-FKS
3TYSZ5AN#NX053690
3TYCZ5AN#NX053690
TMMGT
4WD
3TYGZ5AN#NX053690
3TYHZ5BN#NX005051
3TYDZ5BN#NX005051
Tacoma
2TR-FE
2WD
4WD
3TYRX5GN#NX034750
3TYAX5GN#NX034750
3TYSX5EN#NX010349
3TMEZ5CN#NM169468
2WD
3TMAZ5CN#NM169468
3TMBZ5DN#NM0033575
TMMBC
2GR-FKS
3TMCZ5AN#NM473373
4WD
3TMGZ5AN#NM473373
3TMHZ5BN#NM125968
3TMDZ5BN#NM125968
© 2021 Toyota
Motor Sales, USA
T-SB-0052-22
May 26, 2022
Page 3 of 6
Poor Air Conditioning Cooling Performance - Compressor Pressure Relief
Valve Leak
Warranty Information
OP CODE
DESCRIPTION
AC2046
R & R the Pressure Relief Valve
ENGINE
TIME
4 Cyl.
1.4
6 Cyl.
2.5
OFP
T1
T2
88379-04020
64
14
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.
Parts Information
PART NUMBER
PART NAME
QUANTITY
88379-04020
Valve, Pressure Relief
1
90210-A0002
90210-A0004
1
Required Tools & Equipment
REQUIRED TOOLS & MATERIAL
QUANTITY
Compressor Oil, PSD1 or Equivalent
–
Gas Leak Detector or UV Light
1
1
© 2021 Toyota Motor Sales, USA
T-SB-0052-22
May 26, 2022
Page 4 of 6
Poor Air Conditioning Cooling Performance - Compressor Pressure Relief
Valve Leak
Repair Procedure
1. Does the vehicle exhibit a condition in which the air conditioning system has poor cooling
performance sometimes accompanied by refrigerant vapor visible from under the vehicle?
YES — Continue to step 2.
NO — This bulletin does NOT apply. Continue diagnosis using the applicable
Repair Manual.
2. Is there evidence of leak detection dye at the pressure relief valve on the compressor?
YES — Continue to step 3.
NO — This bulletin does NOT apply. Continue diagnosis using the applicable
Repair Manual.
Figure 1. Leak Detection Dye Found on the Pressure Relief Valve
3. Recover the refrigerant from the air conditioning system.
Refer to TIS, applicable model and model year Repair Manual:
2021 – 2022 Tacoma:
Vehicle Interior – Heating/Air Conditioning – “Air Conditioning: Refrigerant (for HFO1234yf (R1234yf)): Replacement”
© 2021 Toyota Motor Sales, USA
T-SB-0052-22
May 26, 2022
Page 5 of 6
Poor Air Conditioning Cooling Performance - Compressor Pressure Relief
Valve Leak
Repair Procedure (continued)
4. Was the amount of refrigerant recovered less than the amount indicated below?
For vehicles with engine type 2TR-FE: 480 g.
For vehicles with engine type 2GR-FKS: 495 g.
YES — Continue to step 5.
NO — This bulletin does NOT apply. Continue diagnosis using the applicable
Repair Manual.
5. Remove the compressor from the vehicle.
Refer to TIS, applicable model and model year Repair Manual:
2021 – 2022 Tacoma:
Vehicle Interior – Heating/Air Conditioning – “Air Conditioning: Compressor: Removal”
6. Remove the pressure relief valve and O-ring.
7. Install the NEW pressure relief valve and O-ring.
A. Apply sufficient compressor oil (PSD1 or equivalent) to a NEW O-ring and fitting surface of
the pressure relief valve.
B. Install the NEW O-ring onto the pressure relief valve.
C. Install the pressure relief valve.
Torque: 8.0 N*m {82 kgf*cm, 71 in*lbf}
8. Reinstall the compressor onto the vehicle.
Refer to TIS, applicable model and model year Repair Manual:
2021 – 2022 Tacoma:
Vehicle Interior – Heating/Air Conditioning – “Air Conditioning: Compressor: Installation”
9. Charge the air conditioning system with refrigerant.
Refer to TIS, applicable model and model year Repair Manual:
2021 – 2022 Tacoma:
Vehicle Interior – Heating/Air Conditioning – “Air Conditioning: Refrigerant (for HFO1234yf(R1234yf)): Replacement”
NOTE
Amount of refrigerant used for vehicles with engine type 2TR-FE: 480 – 540 g.
Amount of refrigerant used for vehicles with engine type 2GR-FKS: 495 – 555 g.
© 2021 Toyota Motor Sales, USA
T-SB-0052-22
May 26, 2022
Page 6 of 6
Poor Air Conditioning Cooling Performance - Compressor Pressure Relief
Valve Leak
Repair Procedure (continued)
10. Warm the engine at 1,640 RPM or less for two minutes or more AFTER charging the air
conditioning system with refrigerant.
11. Inspect the air conditioning system for refrigerant leak using a gas leak detector or UV light.
NOTE
The air conditioning system has leak detection dye already from the factory.
12. Confirm the air conditioning system is cooling consistently.
© 2021 Toyota Motor Sales, USA
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TSB/Document ID: TSB005222
Replacement Service Bulletin Number:
MFR Communication Date: 2022-05-26
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM
MFR Component System:
MFR Component Subsystem:
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