Last Modified: 07-31-2024 6.11:8.1.0 Doc ID: RM100000001O2PP
Model Year Start: 2021 Model: Corolla Prod Date Range: [04/2020 - 09/2022]
Title: 2ZR-FXE (EMISSION CONTROL): EGR COOLER: REMOVAL; 2021 - 2022 MY Corolla Corolla HV [04/2020 - 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 EGR pipe with cooler 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

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 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

2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]; HYBRID / BATTERY CONTROL: MOTOR GENERATOR CONTROL SYSTEM (for NICKEL METAL HYDRIDE BATTERY): UTILITY for Nickel Metal Hydride Battery

2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]; HYBRID / BATTERY CONTROL: MOTOR GENERATOR CONTROL SYSTEM (for LITHIUM-ION BATTERY with P610): UTILITY for Lithium-ion Battery

Replacement of ECM

Vehicle Identification Number (VIN) registration

MIL comes on

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

  • Replacement of EGR valve assembly
  • Gas leak from exhaust system is repaired

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

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 INVERTER WITH CONVERTER ASSEMBLY

Click here 2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]; HYBRID / BATTERY CONTROL: INVERTER WITH CONVERTER: REMOVAL

2. REMOVE EGR PIPE ASSEMBLY

Click here 2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]; 2ZR-FXE (INTAKE / EXHAUST): INTAKE MANIFOLD: REMOVAL+

3. DISCONNECT WATER BY-PASS HOSE

(a) Slide the clip and disconnect the water by-pass hose from the EGR valve assembly.

4. DISCONNECT INLET HEATER WATER HOSE

(a) Slide the clip and disconnect the inlet heater water hose from the EGR pipe with cooler sub-assembly.

5. DISCONNECT NO. 4 WATER BY-PASS HOSE

(a) Slide the clip and disconnect the No. 4 water by-pass hose from the EGR pipe with cooler sub-assembly.

6. REMOVE EGR PIPE WITH COOLER SUB-ASSEMBLY

(a) Disconnect the EGR valve assembly connector.

(b) Remove the 2 nuts and disconnect the EGR pipe with cooler sub-assembly from the exhaust manifold (TWC: Front Catalyst).

(c) Remove the bolt and 2 nuts and disconnect the EGR pipe with cooler sub-assembly with the EGR valve assembly from the cylinder head sub-assembly and camshaft housing sub-assembly.

Bolt

Nut

(d) Using an E8 "TORX" socket wrench, remove the 2 stud bolts from the cylinder head sub-assembly and camshaft housing sub-assembly.

HINT:

If a stud bolt is deformed or the threads are damaged, replace it.

(e) Remove the EGR pipe with cooler sub-assembly with the EGR valve assembly.

(f) Remove the EGR cooler gasket from the EGR pipe with cooler sub-assembly.

(g) Slide the clip and disconnect the No. 6 water by-pass hose from the EGR pipe with cooler sub-assembly.

(h) Remove the 2 nuts and EGR pipe with cooler sub-assembly from the EGR valve assembly.

(i) Remove the EGR valve gasket from the EGR valve assembly.

(j) Using an E8 "TORX" socket wrench, remove the 3 stud bolts from the EGR pipe with cooler sub-assembly.

HINT:

If a stud bolt is deformed or the threads are damaged, replace it.