Pinpoint Test C : P0504, P0572, P0573, P1703, Or P1935: Notes
WARNING: This page is about a different car, the 2018 Ford F-550 Super Duty, 2018 Ford F-450 Super Duty, 2018 Ford F-350 Super Duty, and 2018 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
Refer to Cruise Control for schematic and connector information.
Normal Operation and Fault Conditions
REFER to: Cruise Control - System Operation and Component Description .
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| P0504 | Brake Switch A / B Correlation | A DTC that sets when the PCM does not sense the correct sequence of the brake pedal input signal from both the cruise control deactivator and stoplamp switches when the brake pedal is pressed and released. |
| P0572 | Brake Switch A Circuit Low | A DTC that sets when the PCM detects an open in the stoplamp switch signal. The PCM monitors the vehicle speed, the engine speed, the engine torque and the stoplamp input during start and stop driving cycles. If the stoplamp switch input to the PCM is always off during start and stop driving cycles, this DTC sets in continuous memory. |
| P0573 | Brake Switch A Circuit High | A DTC that sets when the PCM detects a short to voltage on the stoplamp switch signal. The PCM monitors the vehicle speed, the engine speed, the engine torque and the stoplamp switch input during start and stop driving cycles. If the stoplamp lamp switch input to the PCM is always on during start and stop driving cycles, this DTC sets in continuous memory. |
| P1703 | Brake Switch Out Of Self - Test Range | A DTC that sets in the PCM during the self-test when the stoplamp switch input signal is high or does not cycle high and low. |
| P1935 | Brake Switch/Sensor Signal | A DTC that sets when the PCM does not receive the brake switch input on the brake switch signal circuit to deactivate the cruise control. |
Possible Sources
- Wiring, terminals or connectors
- Stoplamp switch
- PCM