T-SB-0004-22
Service Bulletin Details
Public Details for: T-SB-0004-22
Tsb: some 2016 ? 2022 model year tacoma vehicles may exhibit what customers describe as a 1 ? 3-second whistle noise from the hvac system when the air conditioning system is on. The whistle noise may occur as the compressor cycles on/off an
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2022 TOYOTA TACOMA |
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2021 TOYOTA TACOMA |
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2020 TOYOTA TACOMA |
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2016 TOYOTA TACOMA |
T-SB-0004-22 January 31, 2022 Intermittent Whistle Noise Through Vents With Air Conditioning ON Service Category Vehicle Interior Section Heating/Air Conditioning Market USA Applicability YEAR(S) MODEL(S) 2016 - 2022 Tacoma ADDITIONAL INFORMATION Introduction Some 2016 – 2022 model year Tacoma vehicles may exhibit what customers describe as a 1 – 3-second whistle noise from the HVAC system when the air conditioning system is ON. The whistle noise may occur as the compressor cycles ON/OFF and is more prevalent with increased engine RPM during hot ambient temperatures. Follow the Repair Procedure in this bulletin to address this condition. Warranty Information OP CODE DESCRIPTION TIME OFP T1 T2 883611 R & R HVAC Evaporator Sub-Assy * 88511-04020 91 99 *See flat rate manual. 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 PREVIOUS NEW 88511-04020 88501-04070 PART NAME QTY Evaporator Sub-Assy 1 © 2021 Toyota Motor Sales, USA Page 1 of 3 T-SB-0004-22 January 31, 2022 Page 2 of 3 Intermittent Whistle Noise Through Vents With Air Conditioning ON Required Tools & Equipment REQUIRED EQUIPMENT SUPPLIER Techstream ADVI* PART NUMBER QTY TSADVUNIT Techstream 2.0 TS2UNIT ADE 1 Techstream Lite TSLITEPDLR01 Techstream Lite (Green Cable) TSLP2DLR01 *Essential SST. NOTE Only ONE of the Techstream units listed above is required. Software version 16.30.011 or later is required. Additional Techstream units may be ordered by calling Approved Dealer Equipment (ADE) at 1-800-368-6787. REQUIRED EQUIPMENT SUPPLIER PART NUMBER Robinair R1234YF A/C Machine ADE ROB118150008 NOTE Additional refrigerant service equipment may be ordered by calling Approved Dealer Equipment (ADE) at 1-800-368-6787. Repair Procedure 1. With the vehicle engine running in Park and the parking brake firmly applied, turn ON the air conditioning and set the temperature to low. Slowly bring the engine speed to 3,000 RPM and hold this RPM until the compressor begins to cycle ON and OFF. Is there a 1 – 3-second whistle noise heard from the air conditioning system each time the compressor cycles ON/OFF during hot ambient temperatures? YES — Continue to step 2. NO — This bulletin does NOT apply. Continue diagnosis using the applicable Repair Manual. © 2021 Toyota Motor Sales, USA T-SB-0004-22 January 31, 2022 Page 3 of 3 Intermittent Whistle Noise Through Vents With Air Conditioning ON Repair Procedure (continued) 2. Remove the air conditioning unit. Refer to TIS, applicable model and model year Repair Manual: 2016 / 2017 / 2018 / 2019 / 2020 / 2021 / 2022 Tacoma: Vehicle Interior – Heating/Air Conditioning – Air Conditioning – “Air Conditioning: Air Conditioning Unit: Removal” 3. Remove the evaporator core. Refer to TIS, applicable model and model year Repair Manual: 2016 – 2022 Tacoma: Vehicle Interior – Heating/Air Conditioning – Air Conditioning – “Air Conditioning: Air Conditioning Unit: Disassembly” 4. Install the NEW evaporator core. Refer to TIS, applicable model and model year Repair Manual: 2016 – 2022 Tacoma: Vehicle Interior – Heating/Air Conditioning – Air Conditioning – “Air Conditioning: Air Conditioning Unit: Reassembly” 5. Install the air conditioning unit. Refer to TIS, applicable model and model year Repair Manual: 2016 / 2017 / 2018 / 2019 / 2020 / 2021 / 2022 Tacoma: Vehicle Interior – Heating/Air Conditioning – Air Conditioning – “Air Conditioning: Air Conditioning Unit: Installation” 6. Confirm the whistle noise is no longer present by repeating step 1. © 2021 Toyota Motor Sales, USA