Diagnostic Aids

WARNING: This page is about a different car, the 2004 Pontiac Vibe. However, it is still accessible from the selected car via links, so may be relevant.

Inspect the throttle valve linkage and lever assembly for free and normal movement. Binding or misalignment of the throttle valve can affect the TP sensor input. Check that the throttle lever has not been bent or tampered with. Check that the throttle valve opens fully, and the lever contacts the throttle stop.

On a good TP sensor the scan tool will typically display a TP angle of 8-10 percent at idle, and 76-77 percent at wide open throttle (WOT).

An intermittent malfunction may be caused by fault in the TP sensor electrical circuit. Inspect the wiring harness and the components for an intermittent condition. Refer to Intermittent Conditions .

Repair any electrical circuit faults that were found. Refer to Wiring Repairs in Wiring Systems.

The information included in the Freeze Frame data can be useful in determining the vehicle operating conditions when the DTC first set.