Toyota Yaris: Fuel Injector (for Port Injection) / Removal
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 |
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CAUTION:
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Never perform work on fuel system components near any possible ignition sources.
- 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.
- Sparks could cause vaporized fuel to ignite, resulting in a serious accident.
NOTICE:
- After the ignition switch is turned off, the radio and display receiver assembly records various types of memory and settings. As a result, after turning the ignition switch off, make sure to wait at least 120 seconds before disconnecting the cable from the negative (-) auxiliary battery terminal.
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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 auxiliary battery terminal, systems temporarily stop operating. However, each system has a function that completes learning the first time the system is used.
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Learning completes when vehicle is driven
Effect/Inoperative Function When Necessary Procedures are not Performed
Necessary Procedures
Link
Lane tracing assist system
Drive the vehicle straight ahead at 35 km/h (22 mph) or more for 5 second or more.
Pre-collision system
Stop and start system
Drive the vehicle until stop and start control is permitted (approximately 5 to 60 minutes)
-
Learning completes when vehicle is operated normally
Effect/Inoperative Function When Necessary Procedures are not Performed
Necessary Procedures
Link
Power door lock control system
- Back door opener
Perform door unlock operation with door control switch or electrical key transmitter sub-assembly switch.
Air conditioning system
After the ignition switch is turned to ON, the servo motor standard position is recognized.
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PROCEDURE
1. PRECAUTION
NOTICE:
After turning the ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal.
Click here
2. DISCHARGE FUEL SYSTEM PRESSURE
Click here
3. REMOVE NO. 1 ENGINE COVER SUB-ASSEMBLY
Click here
4. DISCONNECT ENGINE WIRE
Click here
5. REMOVE FUEL PIPE CLAMP
| (a) Remove the fuel pipe clamp from the fuel tube connector. |
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6. DISCONNECT NO. 2 FUEL TUBE SUB-ASSEMBLY
| (a) Disconnect the No. 2 fuel tube sub-assembly from the fuel delivery pipe sub-assembly. Click here
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7. DISCONNECT NO. 4 WATER BY-PASS PIPE
| (a) Remove the 3 bolts and No. 4 water by-pass pipe from the cylinder head sub-assembly. |
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8. REMOVE OIL LEVEL GAUGE SUB-ASSEMBLY
| (a) Remove the oil level gauge sub-assembly. |
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9. REMOVE OIL LEVEL GAUGE GUIDE
| (a) Remove the bolt and oil level gauge guide from the cylinder head sub-assembly. |
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(b) Remove the O-ring from oil level gauge guide.
10. REMOVE FUEL DELIVERY GUARD
| (a) Disengage the wire harness clamp. |
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(b) Remove the 2 bolts, 2 nuts and fuel delivery guard.
11. REMOVE FUEL DELIVERY PIPE
| (a) Disconnect the connector. |
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(b) Remove the 2 bolts and fuel delivery pipe with the 3 fuel injector assemblies from the cylinder head sub-assembly.
NOTICE:
Be careful not to drop the fuel injector assemblies when removing the fuel delivery pipe sub-assembly.
12. REMOVE FUEL DELIVERY SPACER
| (a) Remove the 2 fuel delivery spacers from the cylinder head sub-assembly. |
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13. REMOVE INJECTOR VIBRATION INSULATOR
| (a) Remove the 3 injector vibration insulators from the cylinder head sub-assembly. |
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14. REMOVE NO. 5 ENGINE WIRE
| (a) Disconnect the 4 connectors from the 3 fuel injector assemblies and fuel pressure sensor. |
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(b) Disengage the 2 clamps to remove the No. 5 engine wire from the fuel delivery pipe.
15. REMOVE PORT FUEL INJECTOR ASSEMBLY
| (a) Pull the 3 fuel injector assemblies out of the fuel delivery pipe. |
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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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Components
COMPONENTS ILLUSTRATION
*1 PORT FUEL INJECTOR ASSEMBLY *2 NO. 5 ENGINE WIRE *3 INJECTOR VIBRATION INSULATOR *4 FUEL DELIVERY SPACER *5 FUEL DELIVERY PIPE *6 FUEL DELIVERY GUARD *7 OIL LEVEL GAUGE GUIDE *8 OIL LEVEL GAUGE SUB-ASSEMBLY *9 NO...
Inspection
INSPECTION PROCEDURE 1. INSPECT FUEL INJECTOR ASSEMBLY (a) Check the resistance. (1) Measure the resistance according to the value(s) in the table below...
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Liftgate/Trunk Lid
WARNING
Never allow a person to ride in the luggage compartment/trunk
Allowing a person to ride in the luggage compartment/trunk is dangerous. The person in the luggage compartment/trunk could be seriously injured or killed during sudden braking or a collision.
Do not drive with the liftgate/trunk lid open
