Conditions for Running the DTC

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2005 Isuzu Ascender, 2005 GMC Envoy XUV, 2005 GMC Envoy XL, 2005 GMC Envoy, and 2005 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.

The ignition must be in the RUN or ACC position.
The system voltage is at least 9.5 volts and no more than 15.5 volts.
All the above conditions are present for greater than 300 milliseconds.