Circuit Description
WARNING: This page is about a different car, the 2006 GMC Yukon XL, 2006 Chevrolet Suburban, and 2006 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
The throttle position (TP) sensor 2 is a potentiometer type sensor with 3 circuits:
- A 5-volt reference circuit
- A low reference circuit
- A signal circuit
The TP sensor is used to determine the throttle plate angle for various engine management systems. The control module provides the TP sensor with a 5-volt reference circuit and a low reference circuit. The TP sensor then provides the control module with a signal voltage proportional to throttle plate movement. TP sensor 1 signal voltage is low at closed throttle and increases as the throttle opens. When the control module detects that the TP sensor 2 signal or TP sensor 5-volt reference voltage is outside the predetermined range, this DTC sets.