Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM10000000272IL
Model Year Start: 2023 Model: Corolla Prod Date Range: [09/2022 - 11/2022]
Title: 2ZR-FAE (FUEL): FUEL INJECTOR: REMOVAL; 2023 MY Corolla [09/2022 - 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 fuel injector 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 fuel injector assembly

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

2020 - 2023 MY Corolla [01/2019 - 11/2022]; 2ZR-FAE (ENGINE CONTROL): SFI SYSTEM: INITIALIZATION

CAUTION:

  • Never perform work on fuel system components near any possible ignition sources.
  • Vaporized fuel could ignite, resulting in a serious accident.
  • Do not perform work on fuel system components without first disconnecting the cable from the negative (-) battery terminal.
  • Sparks could cause vaporized fuel to ignite, resulting in a serious accident.

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

Pre-collision System (for TMMMS Made)

Drive the vehicle straight ahead at 35 km/h (22 mph) or more for 5 seconds or more.

2023 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 - 11/2022]; ADVANCED DRIVER ASSISTANCE SYSTEM: PRE-COLLISION SYSTEM (for TMMMS Made): INITIALIZATION

Lane Tracing Assist System (for TMMMS Made)

Lane Departure Alert System (for TMMMS Made)

PROCEDURE

1. PRECAUTION

NOTICE:

After turning the ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal.

Click here 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 -        ]; SETUP: WHEN DISCONNECTING OR RECONNECTING BATTERY TERMINAL: BEFORE DISCONNECTING BATTERY

2. DISCHARGE FUEL SYSTEM PRESSURE

Click here 2023 MY Corolla [09/2022 - 11/2022]; 2ZR-FAE (FUEL): FUEL SYSTEM: PRECAUTION

3. REMOVE BATTERY

Click here 2023 MY Corolla [09/2022 - 11/2022]; MAINTENANCE: 2ZR-FAE BATTERY: REMOVAL

4. REMOVE E.F.I. VACUUM SENSOR ASSEMBLY (MANIFOLD ABSOLUTE PRESSURE SENSOR)

Click here 2020 - 2023 MY Corolla [01/2019 - 11/2022]; 2ZR-FAE (EMISSION CONTROL): VACUUM SENSOR: REMOVAL+

5. DISCONNECT ENGINE WIRE

(a) Disconnect the 4 fuel injector assembly connectors.

(b) Disengage the 3 wire harness clamps.

(c) Remove the engine cover joint and vacuum sensor bracket from the intake manifold.

6. DISCONNECT FUEL TUBE SUB-ASSEMBLY

(a) Remove the No. 2 fuel pipe clamp.

NOTICE:

Do not reuse the No. 2 fuel pipe clamp.

*A

for TMC Made

*B

for TMMMS Made

(b) Disengage the clamp to disconnect the fuel tube sub-assembly.

(c) Disconnect the fuel tube sub-assembly from the fuel delivery pipe sub-assembly.

Click here 2023 MY Corolla [09/2022 - 11/2022]; 2ZR-FAE (FUEL): FUEL SYSTEM: PRECAUTION

7. REMOVE FUEL DELIVERY PIPE SUB-ASSEMBLY

(a) Remove the bolt to separate the clamp of the fuel delivery pipe sub-assembly from the cylinder head sub-assembly.

(b) Remove the 2 bolts and fuel delivery pipe sub-assembly with the 4 fuel injector assemblies from the cylinder head sub-assembly.

NOTICE:

  • If fuel intrudes into the combustion chamber, there may be adverse affects to the engine main body.
  • Be careful not to drop the fuel injector assemblies when removing the fuel delivery pipe sub-assembly.

8. REMOVE NO. 1 DELIVERY PIPE SPACER

(a) Remove the 2 No. 1 delivery pipe spacers from the cylinder head sub-assembly.

9. REMOVE INJECTOR VIBRATION INSULATOR

(a) Remove the 4 injector vibration insulators from the cylinder head sub-assembly.

10. REMOVE FUEL INJECTOR ASSEMBLY

(a) Pull the 4 fuel injector assemblies out of the fuel delivery pipe sub-assembly.

(b) Remove the O-ring from each fuel injector assembly.

(c) Attach a tag or label with the corresponding cylinder number to each fuel injector assembly so that they can be installed to their original locations.

NOTICE:

Cover the fuel injector assemblies with plastic bags to prevent damage and contamination.