Throttle Body (SMT): Inspection

1. Using an ohmmeter, measure the motor resistance between terminal 1 (M+) and 2 (M-).

   Motor resistance: 0.3 - 100 Ω at 20°C (68°F) 

   If the resistance is not as specified, replace the throttle body assembly.

2. Using an ohmmeter, measure the clutch resistance between terminal 3 (CL-) and 4 (CL+).

   Clutch resistance: 4.2 - 5.2 Ω at 20°C (68°F) 

If the resistance is not as specified, replace the throttle body assembly.

Fig 1: Measuring Resistance Between Terminals 1, 2, 3 And 4 Using An Ohmmeter

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Using an ohmmeter, measure the resistance between terminals VC and E2.

Resistance: 1.2 - 3.2 kΩ at 20°C (68°F) 

If the resistance is not as specified, replace the sensor (See REPLACEMENT ).

Fig 2: Measuring Resistance Between Terminals VC And E2 Using An Ohmmeter

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Using an ohmmeter, measure the resistance between terminals VC and E2.

Resistance: 1.2 - 3.2 kΩ at 20°C (68°F) 

If the resistance is not as specified, replace the sensor (See REPLACEMENT ).

Fig 3: Measuring Resistance Between Terminals VC And E2 Using An Ohmmeter

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002