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Home >> Toyota >> 2005 >> ECHO 2D Sedan, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (SFI) >> Injector >> On-Vehicle Inspection
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On-Vehicle Inspection

  1. REMOVE NO.2 CYLINDER HEAD COVER 
  2. CHECK OPERATION SOUND FROM EACH INJECTOR 
    1. Connect the PCV hose to the cylinder head cover.
    2. With the engine running or cranking, use a sound scope to check that the operating noise is normal in proportion to engine speed.
    3. If you do not have a 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: Identifying Sound Scope
    G02574953Courtesy 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 - 14.2Ω at 20°C (68°F) 

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

    3. Reconnect the injector connector.
    Fig 2: Measuring Resistance Between Terminals
    G02574954Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  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.
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