NHTSA ID Number: 11005124
Manufacturer Communication Number: T-SB-0056-24
TSB/Document Date: 2024-07-23
Summary
Some 2023 – 2024 model year Crown and 2024 model year Grand Highlander Hybrid
vehicles equipped with the PC60 hybrid transmission may exhibit a MIL ON condition with Diagnostic Trouble Code (DTC) P279762 (Electromagnetic Oil Pump Component Internal Failure) present. The Transmission Control Module (TCM) logic has been modified to reduce the possibility of this condition.
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TSB/Document ID: T-SB-0056-24
Replacement Service Bulletin Number:
MFR Communication Date: 2024-06-25
MFR Internal Campaign ID/Software Version: T-SB-0056-24
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: POWER TRAIN
MFR Component System:
MFR Component Subsystem:
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T-SB-0056-24
June 25, 2024
MIL ON With DTC P279762
Service
Category
Drivetrain
Section
Hybrid Transmission/Transaxle
Market USA
Applicability
YEAR(S)
MODEL(S)
2023 - 2024
Crown
2024
Grand Highlander HV
ADDITIONAL INFORMATION
Introduction
Some 2023 – 2024 model year Crown and 2024 model year Grand Highlander Hybrid vehicles
equipped with the PC60 hybrid transmission may exhibit a MIL ON condition with Diagnostic
Trouble Code (DTC) P279762 (Electromagnetic Oil Pump Component Internal Failure) present.
The Transmission Control Module (TCM) logic has been modified to reduce the possibility of this
condition. Follow the Repair Procedure in this bulletin to address this condition.
© 2024 Toyota Motor Sales, USA
Page 1 of 5
T-SB-0056-24
June 25, 2024
Page 2 of 5
MIL ON With DTC P279762
Warranty Information
OP CODE
DESCRIPTION
TIME
TC2403
Transmission Control
Module Reprogramming
0.5
TC2404
MODEL
OFP
Crown
89530-30###*
Grand Highlander HV
89530-48540
T1
T2
8A
74
*Warranty claim MUST be submitted with the correct 10-digit OFP. Choose the correct OFP for the vehicle being repaired
by searching for the parts in the Electronic Parts Catalog using the VIN filter.
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.
For 2023 – 2024 model year Crown and 2024 model year Grand Highlander HV vehicles
equipped with a California Certified Emission Control System that are registered and operated
in California or any state that adopts California emission warranty — California Emission
Long-Term Defect Warranty is in effect for 7 years or 70,000 miles from the vehicle’s in-service
date, whichever occurs first. (Please reference Policy 4.7, and/or the Owner’s Warranty &
Maintenance Guide for additional information).
Parts Information
MODEL
PART NUMBER
Crown
89530-30###
Grand Highlander HV
89530-48540
PART NAME
QTY
Transmission Control Computer Assy.
–
NOTE
The transmission control computer assembly should NOT be replaced as part of the Repair Procedure.
© 2024 Toyota Motor Sales, USA
T-SB-0056-24
June 25, 2024
Page 3 of 5
MIL ON With DTC P279762
Required Tools & Equipment
SPECIAL SERVICE TOOLS (SST)
PART NUMBER
QTY
Battery Diagnostic Tool
DCA-8000P T
1
*Essential SST.
NOTE
Additional SSTs may be ordered by calling 1-800-933-8335 or by visiting
Home – Service Resources – Toyota Special Service Tools (SSTs).
REQUIRED EQUIPMENT
SUPPLIER
PART NUMBER
Techstream ADVI*
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 2024.02.004.02 or later is required.
Additional Techstream units may be ordered by calling Approved Dealer Equipment (ADE)
at 1-800-368-6787 or by visiting TIS – Diagnostics – Tools & Equipment – Techstream Order Portal.
Use Techstream or an approved J2534 interface to perform flash reprogramming updates.
Visit techinfo.toyota.com for more information regarding J2534 reprogramming.
Calibration Information
CALIBRATION ID
MODEL
ENGINE
Crown
VDS
NEW
898844856000
898844856100
TZSH35L
T24A-FTS
Grand Highlander HV
PREVIOUS
TASH15L
© 2024 Toyota Motor Sales, USA
T-SB-0056-24
June 25, 2024
Page 4 of 5
MIL ON With DTC P279762
Repair Procedure
1. Confirm the condition exists.
Does the vehicle exhibit a MIL ON condition with DTC P279762 (Electromagnetic Oil Pump
Component Internal Failure) present?
YES — Continue to step 2.
NO — This bulletin does NOT apply. Continue diagnosis using the applicable
Repair Manual.
2. Use GTS+ to confirm if the TCM calibration has been updated.
Is the calibration ID listed in GTS+ the latest TCM calibration?
YES — This bulletin does NOT apply. Continue diagnosis using the applicable
Repair Manual.
NO — Continue to step 3.
3. Disconnect the cooling fans.
A. Disconnect the cooling fan
motor connector.
Figure 1.
B. Rotate the lever while pushing the lock
and disconnect the cooling fan
motor connector.
2
c
1
c
NOTICE
After disconnecting the cooling fan
motor connector, make sure that dirt,
water, or other foreign matter does
NOT contact the connecting parts of
the cooling fan motor connector.
1
Cooling Fan Motor Connector
2
Lock
4. Flash reprogram the TCM.
NOTE
The battery diagnostic tool MUST be used in Power Supply Mode to maintain battery voltage
at 13.5V while flash reprogramming the vehicle.
For details on how to use the battery diagnostic station, refer to the DCA-8000 Instruction Manual
located at TIS – Diagnostics – Tools & Equipment – Battery Diagnostics.
Follow the procedures outlined in T-SB-0107-20, GTS+ ECU Flash Reprogramming With
Security Signature, and flash reprogram the TCM with the NEW calibration file update.
© 2024 Toyota Motor Sales, USA
T-SB-0056-24
June 25, 2024
Page 5 of 5
MIL ON With DTC P279762
Repair Procedure (continued)
5. Reconnect the cooling fans.
A. Connect the cooling fan
motor connector.
Figure 2.
B. Rotate the lever to lock it.
2
c
NOTICE
When connecting the cooling fan
motor connector, make sure that
the connecting parts of the cooling
fan motor connector are free of
dirt, water, or other foreign matter.
Be sure to securely connect the
cooling fan motor connector.
1
c
1
Cooling Fan Motor Connector
2
Lock
6. Using GTS+, clear ANY DTCs and test-drive the vehicle to confirm normal operation and that
the condition is no longer present.
© 2024 Toyota Motor Sales, USA
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