Normal Operation
WARNING: This page is about a different car, the 2008 Ford RV Cutaway, 2008 Ford Econoline, 2008 Ford E450 Super Duty, and 2008 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
The PCM sends a signal through circuit 151 (LB/BK) to the speed control switches, which passes through the clockspring. The return signal is sent through circuit 848 (DG/OG) and the clockspring.
| DTC Description | Fault Trigger Conditions |
|---|---|
| P0565 - Cruise Control ON Signal | A continuous DTC that may set when the speed control ON switch is stuck. |
| P0566 - Cruise Control OFF Signal | A continuous DTC that may set when the speed control OFF switch is stuck. |
| P0567 - Cruise Control RESUME Signal | A continuous DTC that may set when the speed control RESUME switch is stuck. |
| P0568 - Cruise Control SET signal | A continuous DTC that may set when the speed control SET switch is stuck. |
| P0569 - Cruise Control COAST Signal | A continuous DTC that may set when the speed control COAST switch is stuck. |
| P0578 - Cruise Control Multifunction Input A Circuit Stuck | An on-demand DTC that may set when the speed control switch circuits are open. |
| P0579 - Cruise Control Multifunction Input A Circuit Range/Performance | An on-demand DTC that may set when the speed control switch circuits are open, shorted to voltage or ground. |
| P0581 - Cruise Control Multifunction Circuit High | A continuous and on-demand DTC that sets when the speed control switch circuits are shorted to voltage or open. |
This pinpoint test is intended to diagnose the following:
- Wiring, terminals, or connectors
- Clockspring
- Speed control switch
- PCM