Auto-cruise control system diagnostic trouble codes
WARNING: This page is about a different car, the 2005 Dodge Stratus and 2005 Chrysler Sebring. However, it is still accessible from the selected car via links, so may be relevant.
The auto-cruise control system consists of the auto-cruise control-ECU, control switches, sensors and vacuum pump.
The control switches and sensors monitor the state of the vehicle.
Based on input signals from those switches and sensors, the auto-cruise control-ECU activates the vacuum pump.
If the auto-cruise control-ECU detects a problem on any of those components, the ECU estimates where the problem may be occurring, and will output a diagnostic trouble code.
Diagnostic trouble codes cover the throttle position sensor, auto-cruise control switch, vehicle speed sensor < M/T >, auto-cruise control-ECU and vacuum pump.