2ZR-FXE (EMISSION CONTROL): EGR VALVE: REMOVAL; 2020 MY Corolla Corolla HV [01/2019

Last Modified: 07-31-2024	6.11:8.1.0	Doc ID: RM100000001GFP9
Model Year Start: 2020	Model: Corolla	Prod Date Range: [01/2019 - 04/2020]
Title: 2ZR-FXE (EMISSION CONTROL): EGR VALVE: REMOVAL; 2020 MY Corolla Corolla HV [01/2019 - 04/2020]

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 valve 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
Auxiliary battery terminal is disconnected/reconnected	Perform steering sensor zero point calibration	Lane Control System (for HV Model)
Auxiliary battery terminal is disconnected/reconnected	Perform steering sensor zero point calibration	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
Replacement of ECM	Vehicle Identification Number (VIN) or frame number registration	MIL comes on
Replacement of EGR valve assembly Gas leak from exhaust system is repaired	Inspection after repair	Poor idle, etc. Engine start function, etc.

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.
Be sure to wear insulating gloves when working on high voltage wiring or components.
If work is performed without wearing insulating gloves, there is a danger of electric shock.

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. PRECAUTION

NOTICE:

After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work.

2. REMOVE WINDSHIELD WIPER MOTOR AND LINK ASSEMBLY

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3. REMOVE NO. 1 HEATER AIR DUCT SPLASH SHIELD SEAL

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4. REMOVE OUTER COWL TOP PANEL SUB-ASSEMBLY

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5. DISCONNECT ENGINE WIRE

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6. REMOVE AUXILIARY BATTERY

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7. REMOVE SERVICE PLUG GRIP

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8. DRAIN ENGINE COOLANT (for Engine)

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9. REMOVE ECM

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10. REMOVE BATTERY CLAMP SUB-ASSEMBLY

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11. SEPARATE FLOOR SHIFT TRANSMISSION CONTROL SELECT CABLE

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12. DISCONNECT ENGINE WIRE

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13. REMOVE CONNECTOR COVER ASSEMBLY

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14. CHECK TERMINAL VOLTAGE

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15. TEMPORARILY INSTALL CONNECTOR COVER ASSEMBLY

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16. DISCONNECT HV FLOOR UNDER WIRE

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17. DISCONNECT HV AIR CONDITIONING WIRE

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18. SEPARATE INVERTER WITH CONVERTER ASSEMBLY

CAUTION:

Wear insulated gloves.

(a) Remove the 5 bolts and 2 nuts and separate the inverter with converter assembly.

NOTICE:

To prevent damage due to static electricity, do not touch the terminals of the inverter with converter assembly connector.
Make sure to seal the inverter with converter assembly with the connector cover assembly or tape (non-residue type) etc., to prevent entry of foreign matter and water.

(b) Using a rope or equivalent, secure the inverter with converter assembly with the hood hinge.

NOTICE:

Be careful not to damage the surrounding components when securing the inverter with converter assembly.
To prevent damage to the inverter with converter assembly, do not hold the coolant pipe, bracket or connector when securing the inverter with converter assembly.
To prevent damage due to static electricity, do not touch the terminals of the inverter with converter assembly connector.
Make sure to seal the inverter with converter assembly with the connector cover assembly or tape (non-residue type) etc., to prevent entry of foreign matter and water.

Rope

19. REMOVE EGR PIPE ASSEMBLY

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20. REMOVE EGR VALVE ASSEMBLY

(a) Disconnect the EGR valve assembly connector.

(b) Slide the clip and disconnect the No. 6 water by-pass hose from the EGR valve assembly.

(d) Remove the 3 nuts.

(e) Using an E8 "TORX" socket wrench, remove the stud bolt from the camshaft housing sub-assembly.

HINT:

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

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

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