Last Modified: 07-31-2024 6.11:8.1.0 Doc ID: RM1000000025RHW
Model Year Start: 2023 Model: Corolla Hatchback Prod Date Range: [09/2022 -           ]
Title: M20A-FKS (COOLING): WATER PUMP (w/ Cooling Fan ECU): REMOVAL; 2023 - 2025 MY Corolla Corolla Hatchback [09/2022 -        ]

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 engine water pump assembly (water inlet housing) 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
  • Replacement of throttle body with motor assembly
  • Cleaning the deposits from the throttle body with motor assembly
  • Replacement of EGR valve assembly
  • Gas leak from exhaust system is repaired

Inspection after repair
  • Poor idle, etc.
  • Engine start function, etc.

2021 - 2023 MY Corolla Corolla Hatchback [04/2020 - 11/2022]; M20A-FKS (ENGINE CONTROL): SFI SYSTEM: INITIALIZATION 2023 - 2025 MY Corolla Corolla Hatchback [11/2022 -        ]; M20A-FKS (ENGINE CONTROL): SFI SYSTEM: INITIALIZATION

NOTICE:

This procedure includes the removal of small-head bolts. Refer to Small-Head Bolts of Basic Repair Hint to identify the small-head bolts.

Click here 2019 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [06/2018 -        ]; INTRODUCTION: REPAIR INSTRUCTION: PRECAUTION

PROCEDURE

1. REMOVE NO. 1 ENGINE UNDER COVER ASSEMBLY

Click here 2023 MY Corolla Corolla Hatchback [09/2022 - 11/2022]; M20A-FKS (ENGINE MECHANICAL): ENGINE ASSEMBLY: REMOVAL+ 2023 MY Corolla Corolla Hatchback [11/2022 - 03/2023]; M20A-FKS (ENGINE MECHANICAL): ENGINE ASSEMBLY: REMOVAL+ 2023 - 2025 MY Corolla Corolla Hatchback [03/2023 -        ]; M20A-FKS (ENGINE MECHANICAL): ENGINE ASSEMBLY: REMOVAL+

2. DRAIN ENGINE COOLANT

Click here 2020 - 2025 MY Corolla Corolla Hatchback [09/2019 -        ]; MAINTENANCE: M20A-FKS COOLANT: REPLACEMENT+

3. REMOVE INTAKE MANIFOLD

Click here 2023 MY Corolla Corolla Hatchback [09/2022 - 11/2022]; M20A-FKS (INTAKE / EXHAUST): INTAKE MANIFOLD: REMOVAL 2023 - 2025 MY Corolla Corolla Hatchback [11/2022 -        ]; M20A-FKS (INTAKE / EXHAUST): INTAKE MANIFOLD: REMOVAL

4. DISCONNECT NO. 2 RADIATOR HOSE

Click here 2023 MY Corolla Corolla Hatchback [09/2022 - 11/2022]; M20A-FKS (ENGINE MECHANICAL): ENGINE ASSEMBLY: REMOVAL+ 2023 MY Corolla Corolla Hatchback [11/2022 - 03/2023]; M20A-FKS (ENGINE MECHANICAL): ENGINE ASSEMBLY: REMOVAL+ 2023 - 2025 MY Corolla Corolla Hatchback [03/2023 -        ]; M20A-FKS (ENGINE MECHANICAL): ENGINE ASSEMBLY: REMOVAL+

5. REMOVE ENGINE WATER PUMP ASSEMBLY (WATER INLET HOUSING)

(a) Slide the clip and disconnect the No. 7 water by-pass hose from the water inlet with thermostat sub-assembly.

NOTICE:

  • Do not apply force to the water inlet with thermostat sub-assembly when disconnecting the No. 7 water by-pass hose.
  • Do not damage the water inlet with thermostat sub-assembly.

HINT:

When disconnecting the No. 7 water by-pass hose, slide the clip, rotate the hose and pull it straight off the pipe.

(b) Disconnect the sensor wire connector.

(c) Disconnect the engine water pump assembly (water inlet housing) connector.

(d) Using an 8 mm socket wrench, remove the bolt and disconnect the sensor wire from the engine water pump assembly (water inlet housing).

(e) Remove the 4 bolts and engine water pump assembly (water inlet housing) from the cylinder block assembly.

(f) Using an 8 mm socket wrench, remove the 2 bolts and water inlet with thermostat sub-assembly.

(g) Remove the gasket from the water inlet with thermostat sub-assembly.

(h) Remove the gasket from the engine water pump assembly (water inlet housing).

(i) Using an E8 "TORX" socket wrench, remove the stud bolt.