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HOMESERVICE MANUALSTOYOTA2005CELICA GT-S, STANDARDREPAIR AND DIAGNOSISENGINE PERFORMANCEENGINE CONTROL SYSTEMSSFI SYSTEMTHROTTLE BODY (1ZZ-FE)ON-VEHICLE INSPECTION
2005 Toyota Celica GT-S, Standard

On-Vehicle Inspection

2005 Toyota Celica GT-S, StandardSECTION On-Vehicle Inspection
  1. INSPECT THROTTLE BODY 

    Check that the throttle linkage moves smoothly.

    Fig 1: Inspecting Throttle Body
    G02600776Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. INSPECT THROTTLE POSITION SENSOR 
    1. Remove the air cleaner assembly with air flow meter.
    2. Disconnect the throttle position sensor connector.
    3. Using an ohmmeter, measure the resistance between each terminal.
      THROTTLE POSITION SENSOR CONNECTOR TERMINALS RESISTANCE

      Clearance between lever and stop screw Between terminals Resistance
      0 mm (0 in.) VTA - E2 0.2 - 5.7 kΩ
      Throttle valve fully open VTA - E2 2.0 - 10.2 kΩ
      - VC - E2 2.5 - 5.9 kΩ
      Fig 2: Measuring Resistance Between Each Terminal
      G02600777Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Reconnect the throttle position sensor connector.
    5. Reinstall the air cleaner assembly with air flow meter.
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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.