TTT074023A

Tech Tip T-TT-0740-23
December 20, 2023
Subject
Market
Vibration from Transmission at Slow Speeds (Under
8mph)
USA
Service Category
Section
Drivetrain
Automatic Transmission/Transaxle
Applicability
2023MY Crown Platinum
APPLICABLE VEHICLES
2023
Crown
CONDITION
Some 2023MY Crown Platinum grade ONLY may require a transaxle and transmission control module
(TCU) replacement for low-speed vibration from Transaxle and/or DTC for P084000/P084087.
RECOMMENDATIONS
HINT: If the Transaxle is replaced, take a photo of the Transmission Compensation Code Label before
installation it will be used in later steps.
NOTE: Use the Most Current GTS+ software version V2023.04.003.02 or higher.
Confirm part number of TCM (TCU) currently installed or to be installed.
If TCM PN 89530-30881:
 Perform ECU Configuration, refer to Repair Manual Doc ID: RM1000000024ZVI; (SETUP:
WHEN REPLACING OR REMOVING/INSTALLING PARTS: ECU CONFIGURATION; 2023 2024 MY Crown [12/2022 - ???????] ). Perform steps as outlined as many times as necessary
to configure all ECUs.
 Refer to Doc ID: RM1000000024ZVH; (SETUP: WHEN REPLACING OR
REMOVING/INSTALLING PARTS: WORK PROCEDURE; 2023 MY Crown [12/2022 10/2023] ); “Work Procedure Necessary When Replacing Parts”, for “Transaxle assembly with
motor”. Perform these 7 steps in order as listed below using GTS+ and following on screen
instructions:
1.
2.
3.
4.
5.
6.
7.
A/T Compensation Code Reset (Doc ID: RM1000000027LH1)
A/T Code Registration (Arbitrary Code) (Doc ID: RM1000000027LH0)
Front Resolver Correction Value Writing (Doc ID: RM10000000256LT)
Reset Memory (Doc ID: RM1000000027LH1)
K0/WSC Learning Value Reset (Doc ID: RM1000000027LH1)
WSC Deterioration Estimate Reset (Doc ID: RM1000000027LH1)
Road Test (Doc ID: RM1000000027LH1)
If TCM PN 89530-30880:
 Refer to Repair Manual Doc ID: RM1000000024ZVI; “ECU Configuration”. Perform steps as
outlined as many times as necessary to configure all ECUs.
 Refer to Doc ID: RM1000000027LH1; “Initialization Perform Road Test to Allow TCM to Lean”.
Expires on
Ver. 5.0 01/01/2023 T
12/20/2024
Rev3
© 2023, Toyota Motor Sales, USA
Page 1 of 2
Tech Tip T-TT-0740-23
December 20, 2023
Subject
Market
Vibration from Transmission at Slow Speeds (Under
8mph)
USA
Applicability
RECOMMENDATIONS
WARNING – If the incorrect Repair Manul steps are performed, this can lead to DTC’s that will
not clear or harsh engagement into D/R range until additional steps are performed. If ECU
Configuration is not performed, this can lead to No Ready ON condition. If this occurs, please
create a TAS case and contact your FTS.
LINK REFERENCES
1.
2.
3.
4.
5.
SETUP: WHEN REPLACING OR REMOVING/INSTALLING PARTS: ECU CONFIGURATION;
2023 - 2024 MY Crown [12/2022 - ???????]
SETUP: WHEN REPLACING OR REMOVING/INSTALLING PARTS: WORK PROCEDURE;
2023 MY Crown [12/2022 - 10/2023]
PC60 (HYBRID TRANSMISSION / TRANSAXLE): HYBRID TRANSAXLE SYSTEM:
INITIALIZATION; 2023 - 2024 MY Crown [12/2022 - ???????]
PC60 (HYBRID TRANSMISSION / TRANSAXLE): HYBRID TRANSAXLE SYSTEM:
REGISTRATION; 2023 - 2024 MY Crown [12/2022 - ???????]
HYBRID / BATTERY CONTROL: MOTOR GENERATOR CONTROL SYSTEM (for 1MotorHEV Model): UTILITY; 2023 - 2024 MY Crown [12/2022 - ???????]
Expires on
Ver. 5.0 01/01/2023 T
12/20/2024
Rev3
© 2023, Toyota Motor Sales, USA
Page 2 of 2