PA10 (HYBRID TRANSMISSION / TRANSAXLE): HYBRID VEHICLE TRANSAXLE: REMOVAL; 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV [11/2022

Last Modified: 05-13-2024	6.11:8.1.0	Doc ID: RM1000000028HWO
Model Year Start: 2023	Model: Corolla Hatchback	Prod Date Range: [11/2022 - ]
Title: PA10 (HYBRID TRANSMISSION / TRANSAXLE): HYBRID VEHICLE TRANSAXLE: REMOVAL; 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV [11/2022 - ]

REMOVAL

CAUTION / NOTICE / HINT

The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed and installed, or replaced during hybrid vehicle transaxle 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
Replacement of ECM	Vehicle Identification Number (VIN) registration	MIL comes on
	ECU configuration	-
	Update ECU security key	Vehicle Control History (RoB) are stored
Replacement of inverter with converter assembly	ECU configuration	-
Replacement of inverter with converter assembly	Resolver learning	DTCs are stored Slight vibration at a vehicle speed of 5 km/h (3 mph) or less Shock or vibration during acceleration
Replacement of throttle body assembly Replacement of engine assembly Gas leak from exhaust system is repaired	Inspection after repair	Poor idle, etc. Engine start function, etc.
Replacement of hybrid vehicle transaxle assembly	Resolver learning Initialize resolver	DTCs are stored Slight vibration at a vehicle speed of 5 km/h (3 mph) or less Shock or vibration during acceleration
Front wheel alignment adjustment	Perform "Reset Memory" 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

CAUTION:

Orange wire harnesses and connectors indicate high-voltage circuits. To prevent electric shock, always follow the procedure described in the repair manual.
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To prevent electric shock, wear insulated gloves when working on wire harnesses and components of the high voltage system.
To prevent burns, do not touch the engine, exhaust manifold or other high temperature components while the engine is hot.

The engine assembly with transaxle is very heavy. Be sure to follow the procedure described in the repair manual, or the engine lifter may suddenly drop or the engine assembly with transaxle may fall off the engine lifter.

*a	An Object Exceeding Weight Limit of Engine Lifter

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
Front Camera System	Drive the vehicle straight ahead at 15 km/h (9 mph) or more for 1 second or more.

PROCEDURE

1. PERFORM RESOLVER INITIALIZATION

NOTICE:

If it is necessary to replace the hybrid vehicle transaxle assembly, make sure to perform resolver initialization before starting work.

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2. REMOVE ENGINE ASSEMBLY WITH TRANSAXLE

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3. REMOVE WIRE HARNESS CLAMP BRACKET

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4. INSTALL ENGINE HANGERS

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5. DISCONNECT ENGINE WIRE

(a) Disconnect the motor resolver, generator resolver and transmission fluid temperature sensor connector.

*a	Motor Resolver, Generator Resolver and Transmission Fluid Temperature Sensor Connector	*b	Shift Lever Position Sensor Connector
*c	Motor Temperature Sensor and Generator Temperature Sensor Connector	-	-

(b) Disconnect the shift lever position sensor connector.

NOTICE:

After disconnecting the engine wire, cover the connector of the shift lever position sensor with tape (non-residue type) or equivalent to prevent the entry of foreign matter or water.

(d) Remove the bolt.

(e) Disengage the 6 clamps to disconnect the engine wire.

6. REMOVE STARTER HOLE INSULATOR

(a) Remove the 2 bolts and starter hole insulator from the engine assembly.

7. REMOVE FLYWHEEL HOUSING SIDE COVER

(a) Remove the flywheel housing side cover from the engine assembly.

8. REMOVE ENGINE ASSEMBLY

(a) Remove the 7 bolts and engine assembly from the hybrid vehicle transaxle assembly.

NOTICE:

To avoid damaging the knock pins, do not pry between the hybrid vehicle transaxle assembly and engine assembly.
To prevent the splines of the transmission input damper assembly from becoming misaligned, do not allow the hybrid vehicle transaxle assembly to hit the transmission input damper assembly during engine assembly removal and installation.

9. REMOVE FRONT SUSPENSION CROSSMEMBER SUB-ASSEMBLY

(a) Remove the bolt and front suspension crossmember sub-assembly from the No. 2 engine moving control rod.

10. REMOVE NO. 2 ENGINE MOVING CONTROL ROD

(a) Remove the 5 bolts and No. 2 engine moving control rod from the hybrid vehicle transaxle assembly.

11. REMOVE MOTOR CABLE

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12. REMOVE NO. 1 TRANSMISSION CONTROL CABLE BRACKET

(a) Remove the 2 bolts and No. 1 transmission control cable bracket from the hybrid vehicle transaxle assembly.

13. REMOVE WIRE HARNESS CLAMP BRACKET

(a) Remove the 5 bolts and 5 wire harness clamp brackets from the hybrid vehicle transaxle assembly.

14. REMOVE TRANSAXLE HOUSING PLUG

(a) Remove the transaxle housing plug and gasket from the hybrid vehicle transaxle assembly.

15. REMOVE STUD BOLT

(a) Using an E10 "TORX" socket wrench, remove the 2 stud bolts from the hybrid vehicle transaxle assembly.

16. REMOVE TRANSAXLE BREATHER PLUG

HINT:

Perform this procedure only when replacement of the transaxle breather plug is necessary.

(a) Remove the transaxle breather plug from the hybrid vehicle transaxle assembly.