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HOMESERVICE MANUALSTOYOTA2005CELICA GT-S, STANDARDREPAIR AND DIAGNOSISENGINE PERFORMANCEENGINE CONTROL SYSTEMSSFI SYSTEMINJECTORON-VEHICLE INSPECTION
2005 Toyota Celica GT-S, Standard

On-Vehicle Inspection

2005 Toyota Celica GT-S, StandardSECTION On-Vehicle Inspection
  1. REMOVE NO. 2 CYLINDER HEAD COVER 
  2. CHECK OPERATION SOUND FROM EACH INJECTOR 
    1. Connect the PCV hose to cylinder head cover.
    2. With the engine running or cranking, use a sound scope to check that there is normal operating noise in proportion to engine speed.
    3. If you have no sound scope, you can check the injector transmission operation with your finger.

      If no sound or unusual sound is heard, check the wiring connector, injector signal from the ECM.

    4. Disconnect the PCV hose from cylinder head cover.
    Fig 1: Checking Operation Sound From Each Injector
    G02600750Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. INSPECT INJECTOR RESISTANCE 
    1. Disconnect the injector connector.
    2. Using an ohmmeter, measure the resistance between the terminals.

      Resistance: 13.4 - 14.2 Ω at 20°C (68°F) 

      If the resistance is not as specified, replace the injector.

      Fig 2: Measuring Resistance Between Terminals
      G02600751Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Reconnect the injector connector.
  4. INSTALL WIRE HARNESS PROTECTOR COVER 
    1. Install the wire harness protector cover with bolt and 2 nuts.
    2. Connect the PCV hose to cylinder head cover.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.