Last Modified: 05-13-2024 |
6.11:8.1.0 |
Doc ID: RM1000000028GQ1 |
Model Year Start: 2023 |
Model: Corolla |
Prod Date Range: [11/2022 -
] |
Title: 2ZR-FXE (FUEL): FUEL INJECTOR: REMOVAL; 2023 - 2025 MY Corolla Corolla HV [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
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Necessary Procedure
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Effect/Inoperative Function when Necessary Procedure not Performed
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Link
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Replacement of fuel injector assembly
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Replacement of EGR valve assembly
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Gas leak from exhaust system is repaired
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Inspection after repair
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Poor idle, etc.
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Engine start function, etc.
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Replacement of inverter with converter assembly
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ECU configuration
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-
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Resolver learning
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DTCs are stored
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Slight vibration at a vehicle speed of 5 km/h (3 mph) or less
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Shock or vibration during acceleration
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Replacement of ECM
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Vehicle Identification Number (VIN) registration
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MIL comes on
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ECU configuration
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Update ECU security key
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Vehicle Control History (RoB) are stored
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CAUTION:
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Never perform work on fuel system components near any possible ignition sources.
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Vaporized fuel could ignite, resulting in a serious accident.
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Do not perform work on fuel system components without first disconnecting the cable from the negative (-) auxiliary battery terminal.
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Sparks could cause vaporized fuel to ignite, resulting in a serious accident.
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
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
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Necessary Procedure
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Link
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Front Camera System
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Drive the vehicle straight ahead at 15 km/h (9 mph) or more for 1 second or more.
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PROCEDURE
1. PRECAUTION
NOTICE:
After turning the engine switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal.
Click here
2. DISCHARGE FUEL SYSTEM PRESSURE
Click here
3. DISCONNECT CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL
Click here
4. REMOVE EGR PIPE WITH COOLER SUB-ASSEMBLY
Click here
5. DISCONNECT NO. 2 VENTILATION HOSE
(a) Slide the clip and disconnect the No. 2 ventilation hose from the cylinder head cover sub-assembly.
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6. DISCONNECT ENGINE WIRE
(a) Disconnect the 4 fuel injector assembly connectors.
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(b) Remove the bolt.
(c) Disengage the clamp to disconnect the engine wire.
7. DISCONNECT FUEL TUBE SUB-ASSEMBLY
(a) Open the cover of the EFI fuel pipe clamp and remove the EFI fuel pipe clamp from the fuel tube connector.
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Open
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Pull
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(b) Disconnect the fuel tube sub-assembly from the fuel pipe.
Click here
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8. 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.
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(b) Remove the 2 bolts and fuel delivery pipe sub-assembly with the 4 fuel injector assemblies.
NOTICE:
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If fuel intrudes into the combustion chamber, there may be adverse affects to the engine main body.
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Be careful not to drop the fuel injector assemblies when removing the fuel delivery pipe sub-assembly.
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9. REMOVE NO. 1 DELIVERY PIPE SPACER
(a) Remove the 2 No. 1 delivery pipe spacers from the cylinder head sub-assembly.
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10. REMOVE FUEL INJECTOR ASSEMBLY
(a) Pull the 4 fuel injector assemblies out of the fuel delivery pipe sub-assembly.
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(b) Remove the O-ring from each fuel injector assembly.
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(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.
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(d) Remove the 4 injector vibration insulators from the cylinder head sub-assembly.
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