LEMON Manuals: Even more car manuals for everyone
Home >> Lexus >> 2024 >> TX 350 Base, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 7 (Rear Traction Motor / Hybrid Transaxle System (QA10) - Service Information) >> Inverter >> Removal [12/2023 - ] >> Caution / Notice / Hint

Caution / Notice / Hint

WARNING: This page is about a different car, the 2024 Lexus TX 550h+ and 2024 Lexus TX 500h. However, it is still accessible from the selected car via links, so may be relevant.

The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed and installed, or replaced during EV motor control inverter assembly removal/installation are shown below.

NECESSARY PROCEDURES AFTER PARTS REMOVED/INSTALLED/REPLACED

Replaced Part or Performed Procedure Necessary Procedure Effect/Inoperative Function when Necessary Procedure not Performed Link
Auxiliary battery terminal is disconnected/reconnected Operate the multiplex network master switch assembly (retractable outer mirror switch) to extend and retract the outer rear view mirror assembly Parking Support Brake System*1 Refer to INITIALIZATION [09/2023 - ]
for T24A-FTS: 
Gas leak from exhaust system is repaired		 Inspection after repair
  • Poor idle, etc.
  • Engine start function, etc.
 Refer to INITIALIZATION [09/2023 - ]
for 2GR-FXS: 
Gas leak from exhaust system is repaired		 Inspection after repair
  • Poor idle, etc.
  • Engine start function, etc.
 Refer to INITIALIZATION [12/2023 - ]
Replacement of rear transaxle with motor and inverter assembly ECU configuration - Refer to ECU CONFIGURATION [09/2023 - ]
Replacement of rear transaxle with motor assembly Rear Resolver Correction value Writing
  • DTCs are stored
  • Slight vibration at a vehicle speed of 5 km/h (3 mph) or less
  • Shock or vibration during acceleration
 for PHEV Model: Refer to UTILITY [12/2023 - ]
for 1Motor-HEV Model: Refer to UTILITY [09/2023 - ]
Replacement of EV motor control inverter assembly ECU configuration - Refer to ECU CONFIGURATION [09/2023 - ]
  • Rear Resolver Correction value Registration
  • Rear Resolver Correction value Writing
  • DTCs are stored
  • Slight vibration at a vehicle speed of 5 km/h (3 mph) or less
  • Shock or vibration during acceleration
 for PHEV Model: Refer to UTILITY [12/2023 - ]
for 1Motor-HEV Model: Refer to UTILITY [09/2023 - ]
Suspension parts*2 Rear television camera assembly optical axis (Back camera position setting) Parking Assist Monitor System Refer to CALIBRATION [09/2023 - ]
Parking assist ECU initialization Panoramic View Monitor System Refer to CALIBRATION [09/2023 - ]
Advanced Park Refer to CALIBRATION [09/2023 - ]
w/ Automatic Headlight Beam Level Control System: 
  1. Perform headlight ECU (headlight assembly LH) initialization
 Lighting System (EXT) Refer to INITIALIZATION [09/2023 - ]
w/ Automatic Headlight Beam Level Control System: 
  1. Rear height control sensor sub-assembly LH
 Perform headlight ECU sub-assembly LH initialization Lighting system (w/ Automatic Headlight Beam Level Control System) Refer to INITIALIZATION [09/2023 - ]
Tires
  • Initialization*3*4
  • Tire Position Identification*3*4
 Tire Pressure Warning System Refer to Procedures Necessary When Replacing Parts (for Tire Pressure Warning System) table below
Refer to WORK PROCEDURE [12/2023 - ]
Rear television camera assembly optical axis (Back camera position setting) Parking Assist Monitor System Refer to CALIBRATION [09/2023 - ]
Parking assist ECU initialization Panoramic View Monitor System Refer to CALIBRATION [09/2023 - ]
Advanced Park Refer to CALIBRATION [09/2023 - ]
Rear wheel alignment adjustment Perform "Calibration"
  • DTCs are stored
  • ABS warning light illuminates
  • Brake system warning light (yellow indicator) illuminates
  • Slip indicator light illuminates
  • Electronically controlled brake system disabled or malfunctions
 Refer to RESET MEMORY / CALIBRATION [09/2023 - ]

*1: When "[Parking Support Brake System icon] System Stopped See Owner's Manual" is displayed on the multi-information display.

*2: The vehicle height changes because of tire replacement.

*3: Also necessary after performing a tire rotation.

*4: It is not necessary to perform this procedure if the tire pressure warning valve and transmitters are installed to the same location.

WARNING:
  • Orange wire harnesses and connectors indicate high-voltage circuits. To prevent electric shock, always follow the procedure described in the appropriate service information .
    GTY588409Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    Refer to PRECAUTION [09/2023 - ]

  • To prevent electric shock, wear insulated gloves when working on wire harnesses and components of the high voltage system.
    GTY588386Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  • To prevent burns, do not touch the engine, exhaust pipe or other high temperature components while the engine is hot.
    GTY563662Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  • The rear transaxle with motor and inverter assembly is very heavy. Be sure to follow the procedure described in the appropriate service information or the engine lifter may suddenly drop or the rear transaxle with motor and inverter assembly may fall off the engine lifter.
    GTY566510Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    *a An Object Exceeding Weight Limit of Engine Lifter
NOTE:
  • To prevent the key from being locked in the vehicle, make sure to enter e-latch inspection mode and enable the manual release handle before disconnecting the cable from the negative (-) auxiliary battery terminal.

    Refer to INSPECTION MODE PROCEDURE [09/2023 - ]

  • If metal shavings are created when bolts are removed from the rear transaxle with motor and inverter assembly, remove them using tape or equivalent.
    GTY684387Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  • Use non-residue type tape.
  • Do not remove seal packing from the sealing surface.
  • Remove any seal packing that protrudes from the sealing surface.
    GTY1132360Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

HINT: 

When the cable is disconnected / reconnected to the auxiliary battery terminal, systems temporarily stop operating. However, each system has a function that completes learning the first time the system is used.

LEARNING COMPLETES WHEN VEHICLE IS DRIVEN

Effect/Inoperative Function when Necessary Procedure not Performed Necessary Procedure Link
Lighting System (w/ Automatic Headlight Beam Level Control System) Drive the vehicle straight ahead at 15 km/h (10 mph) or more for 1 second or more. Refer to INITIALIZATION [09/2023 - ]
Front Camera System
Adaptive High Beam System
LEARNING COMPLETES WHEN VEHICLE IS OPERATED NORMALLY

Effect/Inoperative Function when Necessary Procedure not Performed Necessary Procedure Link
Power Back Door System Reset back door close position Refer to INITIALIZATION [09/2023 - ]
Air Conditioning System After the ignition switch is turned to ON, the servo motor standard position is recognized. -


When replacing parts, perform procedures according to the following table.

Part Replaced or Procedure Performed Before replacement After replacement
Read the resolver compensation value
for PHEV Model:
Refer to UTILITY [12/2023 - ]
for 1Motor-HEV Model:
Refer to UTILITY [09/2023 - ]		 Check the resolver compensation value directly underneath the QR code
for PHEV Model:
Refer to UTILITY [12/2023 - ]
for 1Motor-HEV Model:
Refer to UTILITY [09/2023 - ]		 ECU Configuration
Refer to ECU CONFIGURATION [09/2023 - ]		 Write the resolver compensation value
for PHEV Model:
Refer to UTILITY [12/2023 - ]
for 1Motor-HEV Model:
Refer to UTILITY [09/2023 - ]
Hybrid motor control inverter assembly ◦ * ◦ ◦
EV motor control inverter assembly ◦ * ◦ ◦
Transaxle assembly with motor ◦ ◦ - ◦
Rear transaxle with motor assembly ◦ ◦ - ◦
Transaxle assembly with motor and inverter - - ◦ -
Rear transaxle with motor and inverter assembly - - ◦ -

*: Perform this step if it was not possible to read the resolver compensation value before replacement.◦: Necessary-: Not necessary



COMPONENTS (REMOVAL) 

Fig 1: Inverter Removal Components [12/2023 - ] (1 Of 4)
GTY1239270Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Procedure Part Name Code
1 PERFORM RESOLVER LEARNING - - - See step  1
2 REAR TRANSAXLE WITH MOTOR AND INVERTER ASSEMBLY 30610A - - -
*A for HEV Model *B for PHEV Model
Fig 2: Inverter Removal Components [12/2023 - ] (2 Of 4)
GTY1238309Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Procedure Part Name Code
3 FRAME WIRE 82164 See step  3 - -
4 NO. 1 TRANSMISSION OIL COOLER HOSE ASSEMBLY 32930F See step  4 - -
5 NO. 1 INVERTER COOLING HOSE ASSEMBLY G90A0A See step  5 - -
7 MOTOR MOUNTING STAY RH G2317 - - -
8 REAR MOTOR MOUNTING INSULATOR RH G2366 - - -
9 MOTOR MOUNTING INSULATOR LH G2372 - - -
10 UPPER INVERTER COVER SUB-ASSEMBLY G9022B See step  10 - -
11 CHECK TERMINAL VOLTAGE - See step  11 - -
12 HV BATTERY CHARGER WIRE 821H5A See step  12 - -
*A for HEV Model - -
Fig 3: Inverter Removal Components [12/2023 - ] (3 Of 4)
GTY1234949Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Procedure Part Name Code
3 FRAME WIRE 82164 See step  3 - -
4 NO. 1 TRANSMISSION OIL COOLER HOSE ASSEMBLY 32930F See step  4 - -
6 NO. 4 INVERTER COOLING PIPE - See step  6 - -
8 REAR MOTOR MOUNTING INSULATOR RH G2366 - - -
9 MOTOR MOUNTING INSULATOR LH G2372 - - -
10 UPPER INVERTER COVER SUB-ASSEMBLY G9022B See step  10 - -
11 CHECK TERMINAL VOLTAGE - See step  11 - -
13 NO. 3 HIGH VOLTAGE FLOOR UNDER WIRE - See step  12 - -
*A for PHEV Model - -
Fig 4: Inverter Removal Components [12/2023 - ] (4 Of 4)
GTY1238245Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Procedure Part Name Code
14 VERIFY THAT VOLTAGE OF INVERTER IS 0 V - See step  14 - -
15 CLEAN REAR TRANSAXLE WITH MOTOR AND INVERTER ASSEMBLY 30610A See step  15 - -
16 HOW TO PREVENT STATIC ELECTRICITY - See step  16 - -
17 DRAIN COOLANT (for Intercooler) - - See step  17 -
18 INVERTER COVER G9221 See step  18 - -
19 REAR TRANSAXLE MOTOR COMPARTMENT WIRE 82115A See step  19 - -
20 REAR TRANSAXLE INVERTER COOLING PIPE G9171D See step  20 - -
21 EV MOTOR CONTROL INVERTER ASSEMBLY G9210 See step  21 - -
• Non-reusable part - -
scientia non olet · About LEMON Manuals