LEMON Manuals: Even more car manuals for everyone
Home >> Toyota >> 2001 >> Sienna CE >> Repair and Diagnosis >> External Pages >> Different car >> Section 27 (Engine Control System & Component Testing - 4-Cylinder) >> Fuel Systems >> Fuel Control >> Fuel Injectors (Celica, Corolla, ECHO, Highlander, MR2, Prius & RAV4)

Fuel Injectors (Celica, Corolla, ECHO, Highlander, MR2, Prius & RAV4)

WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 2002 Toyota Tacoma, 2002 Toyota RAV4, 2002 Toyota Prius, 2002 Toyota MR2, and 2002 Toyota Highlander. However, it is still accessible from the selected car via links, so may be relevant.
WARNING: On Prius, read service precautions before proceeding with service procedure. See SERVICE PRECAUTIONS .
  1. To check for fuel injector operation, remove No. 2 cylinder head cover on top of engine (if equipped) any other components for access to fuel injectors. Using stethoscope, listen for clicking sound at each fuel injector, or feel for fuel injector operation at fuel injector with engine cranking or with engine running. If fuel injector operation does not exist, check for loose connection at electrical connector for fuel injector. If electrical connector for fuel injector is okay, go to next step.
  2. Ensure ignition is off. Disconnect electrical connector at fuel injector. Using ohmmeter, check resistance between electrical terminals on fuel injector. Replace fuel injector if resistance is not within specification. See FUEL INJECTOR RESISTANCE  table. See FUEL RAILS & FUEL INJECTORS under FUEL SYSTEMS in REMOVAL, OVERHAUL & INSTALLATION - 4-CYLINDER article.
  3. If fuel injector operates and fuel injector resistance is within specification, go to next step. If fuel injector resistance is within specification but fuel injector does not operate, check wiring circuit to fuel injector. See WIRING DIAGRAMS article. If problem exists in fuel injector or wiring circuit and misfire exists, a Diagnostic Trouble Code (DTC) may be stored in Engine Control Module (ECM). See TESTING PROCEDURE under SELF-DIAGNOSTIC SYSTEM in appropriate SELF-DIAGNOSTICS article for retrieving of DTCs.
  4. To check fuel injector volume, remove fuel injector. See FUEL RAILS & FUEL INJECTORS under FUEL SYSTEMS in REMOVAL, OVERHAUL & INSTALLATION - 4-CYLINDER article.
  5. On Celica, Corolla, ECHO and MR2, remove fuel pipe clamp from end of fuel pipe at end of fuel rail if not previously done. Perform STEP 1 in illustration. See Figure-Figure and Figure . Ensure area around fuel pipe and disconnect fitting is clean. Depress both sides of retainer and pull fuel pipe with disconnect fitting from fuel pipe fitting. Perform STEP 2 in illustration. See Figure-Figure and Figure . Use care when disconnecting fuel pipe, as some residual fuel pressure may still exist in fuel system. Go to step  8.
  6. On Highlander and RAV4, remove fuel pipe clamp from end of fuel pipe at end of fuel rail if not previously done. See Figure and Figure . Depress both tabs and pull fuel pipe with disconnect fitting from fuel pipe fitting. See Figure and Figure . Use care when disconnecting fuel pipe, as some residual fuel pressure may still exist in fuel system. Go to step  8.
  7. On Prius, depress both sides of retainer and pull fuel pipe with disconnect fitting from fuel pipe fitting. See Figure. Use care when disconnecting fuel pipe, as some residual fuel pressure may still exist in fuel system. Go to next step.
  8. On all models, purchase appropriate fuel pipe from parts department. See FUEL PIPE IDENTIFICATION  table. Remove fuel pipe connector from end of NEW fuel pipe. See Figure and Figure .
    FUEL PIPE IDENTIFICATION

    Application Fuel Pipe Part No.
    Celica
    1.8L 1ZZ-FE 23901-22100
    1.8L 2ZZ-GE 23271-88600
    Corolla 23901-22010
    ECHO 23901-21020 Or 23901-22010
    Highlander 23901-28070
    MR2 23901-22070
    Prius 23901-21020
    RAV4 23901-22110
  9. Install fuel pipe connector on fuel pipe fitting and retainer (if equipped). See Figure. Ensure fuel pipe connector is securely attached on fuel pipe fitting and retainer (if equipped) is fully seated.
  10. Connect delivery hose from Fuel Injector Measuring Set (SST 09268-41047) to fuel pipe connector. Check that grommet (if equipped) and "O" ring are installed on top of fuel injector. Using clamp and union from fuel injector measuring set, connect fuel injector to delivery hose. See Figure.
  11. Place vinyl tube on end of fuel injector to prevent fuel spillage. Place fuel injector into a clean graduated container.
  12. Connect Toyota hand-held tester to data link connector No. 3 at driver's side of instrument panel. See Figure-Figure . Turn ignition on and then turn hand-held tester on. Select ACTIVE TEST MODE on hand-held tester. Using hand-held tester manufacturer's instructions, activate fuel pump.
    NOTE: If hand-held tester is not available, fuel pump may also be operated to pressurize fuel system by applying battery voltage to electrical terminals on fuel pump. For operating of fuel pump, see appropriate FUEL PUMP RESISTANCE & OPERATION  procedure under FUEL DELIVERY under FUEL SYSTEMS.
  13. Connect Fuel Injector Tester (09842-30080) to fuel injector for 15 seconds. See Figure. Measure fuel injector volume. Test each fuel injector 2-3 times. Replace fuel injector if fuel injector volume is not within specification. See FUEL INJECTOR VOLUME SPECIFICATIONS  table. Ensure difference between fuel injector volume on all fuel injectors is within specification. See FUEL INJECTOR VOLUME SPECIFICATIONS  table.
  14. Disconnect fuel injector tester. Ensure fuel leakage from end of fuel injector does not exceed one drop in 12 minutes. Replace fuel injector if leakage exceeds one drop in 12 minutes. Disconnect negative battery cable. Remove test equipment.
  15. On Celica, Corolla, ECHO, MR2 and Prius, DO NOT reuse old retainer when installing fuel pipe on fuel pipe fitting. Always use a NEW retainer. Apply light coat of engine oil on tip of fuel pipe fitting to allow for ease of disconnect fitting and fuel pipe installation. Using NEW retainer, install fuel pipe on fuel pipe fitting until "click" sound is heard. DO NOT reuse old retainer. Pull on fuel pipe to ensure fuel pipe is properly locked on fuel pipe fitting. Reinstall fuel pipe clamp (if equipped). Go to step  17.
  16. On Highlander and RAV4, install fuel pipe on fuel pipe fitting. Pull on fuel pipe to ensure fuel pipe is properly locked on fuel pipe fitting. Reinstall fuel pipe clamp. Go to next step.
  17. On all models, install negative battery cable. Check for fuel leaks by operating the fuel pump by using hand-held tester or connecting battery voltage to fuel pump.
    NOTE: On Celica, it may be possible that power sun roof may not operate properly after battery was disconnected. If power sun roof does not operate properly, perform power sun roof reinitialization procedure. See appropriate POWER SUN ROOF REINITIALIZATION PROCEDURE  under PROGRAMMING.
scientia non olet · About LEMON Manuals