2005 Scion tC AutomaticFACTORY OEM SERVICE PROCEDURE

Service Data

2AZ-FE: 

Engine Control System Service Data Chart - 2AZ-FE

Camshaft timing oil control valve assy  
Resistance 1 (+B) - 2 (GND) 6.9 to 7.9 Ω at 20°C (68°F)
Mass airflow meter  
Resistance 4 (THA) - 5 (E2) 13.6 to 18.4 Ω at - 20°C (- 4°F)
2.21 to 2.69 Ω at 20°C (68°F)
0.493 to 0.667 Ω at 60°C (140°F)
Engine coolant temperature sensor  
Resistance 1 (E2) - 2 (THW) 2.32 to 2.59 Ω at 20°C (68°F)
0.310 to 0.326 Ω at 80°C (176°F)
Throttle body assy  
Resistance 1 (M-) - 2 (M+) 03 to 100 Ω at 20°C (68°F)
Knock sensor  
Resistance 1 (Ground) - 2 (Output) 120 to 280 Ω at 20°C (68°F)
Accelerator pedal assy  
Resistance 3 (EP1) - 6 (VCP1) 1.5 to 6.0 kΩ
1 (EP2) - 4 (VCP2) 1.5 to 6.0 kΩ
Main relay  
Resistance 3 - 5 10 kΩ or higher
Below 1 Ω (Apply battery voltage to terminal 1 and 2)
Circuit opening relay  
Resistance 3 - 5 10 kΩ or higher
Below 1 Ω (Apply battery voltage to terminal 1 and 2)
Factory Service Tools

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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.

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