Circuit/System Testing
WARNING: This page is about a different car, the 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
- Perform the stoplamp switch adjustment, refer to Stop Lamp Switch Adjustment , clear all DTCs, and operate the vehicle within the Conditions for Running the DTC.
- If DTC P1574 resets as current, test the stop lamp switch signal circuit for a short to ground, short to voltage, or open.
- If circuits test OK, replace the PCM.