Last Modified: 07-31-2024 6.11:8.1.0 Doc ID: RM100000001H4Y9
Model Year Start: 2020 Model: Corolla Prod Date Range: [01/2019 - 09/2022]
Title: 2ZR-FXE (ENGINE CONTROL): ENGINE COOLANT TEMPERATURE SENSOR: REMOVAL; 2020 - 2022 MY Corolla Corolla HV [01/2019 - 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 coolant temperature sensor 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

Perform steering sensor zero point calibration

Lane Control System (for HV Model)

2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]; PRE-COLLISION: PRE-COLLISION SYSTEM (for HV Model): INITIALIZATION

Pre-collision System (for HV Model)

Replacement of ECM

Vehicle Identification Number (VIN) or frame number registration

MIL comes on

2020 - 2025 MY Corolla Corolla HV [01/2019 -        ]; 2ZR-FXE (ENGINE CONTROL): SFI SYSTEM: REGISTRATION

  • Replacement of EGR valve assembly
  • Gas leak from exhaust system is repaired
  • Replacement of engine coolant temperature sensor

Inspection After Repair
  • Poor idle, etc.
  • Engine start function, etc.

2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]; 2ZR-FXE (ENGINE CONTROL): SFI SYSTEM: INITIALIZATION

NOTICE:

After the power switch is turned off, the radio and display receiver assembly records various types of memory and settings. As a result, after turning the power switch off, make sure to wait at least 85 seconds before disconnecting the cable from the negative (-) auxiliary battery terminal. (for Audio and Visual System (for HV Model))

PROCEDURE

1. REMOVE NO. 2 ENGINE COOLANT TEMPERATURE SENSOR (w/ No. 2 Engine Coolant Temperature Sensor)

(a) Drain the engine coolant (for Engine).

Click here 2020 MY Corolla Corolla HV [01/2019 - 04/2020]; MAINTENANCE: 2ZR-FXE COOLANT (for Engine Coolant): REPLACEMENT+ 2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]; MAINTENANCE: 2ZR-FXE COOLANT (for Engine Coolant): REPLACEMENT+

(b) Disconnect the No. 2 engine coolant temperature sensor connector.

(c) Remove the clip and No. 2 engine coolant temperature sensor from the radiator pipe.

NOTICE:

If the No. 2 engine coolant temperature sensor has been struck or dropped, replace it.

2. REMOVE ENGINE COOLANT TEMPERATURE SENSOR

(a) Remove the EGR valve assembly.

Click here 2020 MY Corolla Corolla HV [01/2019 - 04/2020]; 2ZR-FXE (EMISSION CONTROL): EGR VALVE: REMOVAL 2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]; 2ZR-FXE (EMISSION CONTROL): EGR VALVE: REMOVAL

(b) Disconnect the engine coolant temperature sensor connector.

(c) Using SST, remove the engine coolant temperature sensor from the water outlet.

SST: 09817-33191

NOTICE:

If the engine coolant temperature sensor has been struck or dropped, replace it.

*1

Gasket

(d) Remove the gasket from the engine coolant temperature sensor.