P2103

P2103 points to Throttle Actuator Control Motor Circuit High.

Not necessarily. The repair manual indicates it as the last area after checking the following trouble areas:

• Short in throttle control motor circuit
• Throttle control motor
• Throttle valve
• Throttle body assembly
• ECM

Here is the full work up: Work up for P2102/P2103

Hope that helps.

 

I don't see anywhere where it suggests that. What I see in common with those two codes is the throttle control motor. You said you replaced the throttle body (TB), was it a new one or a second-hand one from a breaker? If it was not new, it is possible you installed a TB which now has a faulty throttle control motor?

As I read it, you have changed the TB since you ran those test, so those tests are irrelevant. You need to test this TB. If you find that the throttle control motor is faulty, I believe you have to replace the TB as you can't just replace the motor.

The throttle body is controlled by the engine control module (ECM), also sometimes known as the engine ECU (electronic control unit). The TB does not have a separate ECU.

 

See the attached diagram.

I think you need to make sure you have installed or activated the Prius specific extended PIDs. I don't use Torque Pro myself, but one of the others here who do should be able to walk you through that.

Here is the diagram that shows the various ECU locations: