Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM1000000028GQI
Model Year Start: 2023 Model: GR Corolla Prod Date Range: [11/2022 -           ]
Title: G16E-GTS (COOLING): THERMOSTAT: REMOVAL; 2023 - 2025 MY GR Corolla [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 water inlet with thermostat sub-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

  • Replacement of throttle body with motor assembly
  • Cleaning the deposits from the throttle body with motor assembly

Inspection After Repair

  • Poor idle, etc.
  • Engine start function, etc.

2023 - 2025 MY GR Corolla [09/2022 -        ]; G16E-GTS (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

HINT:

When the cable is disconnected / reconnected to the 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

*1: for GR Model

*2: except GR Model

Front Camera System

  • Drive the vehicle straight ahead at 35 km/h (22 mph) or more for 5 seconds or more.*1
  • Drive the vehicle straight ahead at 15 km/h (10 mph) or more for 1 second or more.*2

2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 -        ]; ADVANCED DRIVER ASSISTANCE SYSTEM: FRONT CAMERA SYSTEM: INITIALIZATION

Learning completes when vehicle is operated normally

Effect/Inoperative Function when Necessary Procedure not Performed

Necessary Procedure

Link

Power Door Lock Control System

  • Back door opener

Perform door unlock operation with door control switch or electrical key transmitter sub-assembly switch.

2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 -        ]; DOOR LOCK: POWER DOOR LOCK CONTROL SYSTEM: INITIALIZATION

PROCEDURE

1. REMOVE NO. 1 ENGINE UNDER COVER ASSEMBLY

Click here 2023 - 2025 MY GR Corolla [11/2022 -        ]; G16E-GTS (ENGINE MECHANICAL): ENGINE ASSEMBLY: REMOVAL+

2. DRAIN ENGINE COOLANT

Click here 2023 - 2025 MY GR Corolla [09/2022 -        ]; MAINTENANCE: G16E-GTS COOLANT: REPLACEMENT+

3. REMOVE INTAKE MANIFOLD

Click here 2023 - 2025 MY GR Corolla [11/2022 -        ]; G16E-GTS (INTAKE / EXHAUST): INTAKE MANIFOLD: REMOVAL

4. REMOVE GENERATOR ASSEMBLY

Click here 2023 - 2025 MY GR Corolla [11/2022 -        ]; G16E-GTS (BATTERY / CHARGING): GENERATOR: REMOVAL

5. DISCONNECT NO. 5 WATER BY-PASS HOSE

(a) Slide the clip and disconnect the No. 5 water by-pass hose from the water inlet with water pump housing sub-assembly.

6. DISCONNECT NO. 2 RADIATOR HOSE

(a) Slide the clip and disconnect the No. 2 radiator hose from the water inlet with thermostat sub-assembly.

7. REMOVE AIR CONNECTOR STAY

(a) Remove the bolt and air connector stay from the water inlet with water pump housing sub-assembly.

8. REMOVE WATER INLET WITH WATER PUMP HOUSING SUB-ASSEMBLY

(a) Slide the clip and disconnect the No. 4 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. 4 water by-pass hose.
  • Do not damage the water inlet with thermostat sub-assembly.

(b) Remove the bolt, 2 nuts and water inlet with water pump housing sub-assembly from the cylinder block sub-assembly.

(c) Remove the gasket from the water inlet with water pump housing sub-assembly.

9. REMOVE WATER INLET WITH THERMOSTAT SUB-ASSEMBLY

(a) Remove the 2 bolts and water inlet with thermostat sub-assembly.

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