Normal Operation
WARNING: This page is about a different car, the 2010 Mercury Milan, 2010 Lincoln MKZ, and 2010 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
The ABS module monitors the pressure of the hydraulic brake system through the use of a brake pressure transducer. The brake pressure transducer is internal to the Hydraulic Control Unit (HCU). The brake pressure transducer cannot be serviced separately. If a new brake pressure transducer is needed, a new HCU must be installed.
- DTC C1288 (Pressure Transducer Main/Primary Input Circuit Failure) - If there is an improper connection between the ABS module and HCU, if the brake pressure transducer is faulted or if the ABS module is faulted internally, this DTC will set.
- DTC C1440 (Pressure Transducer Main/Primary Signal Faulted) - If there is an improper connection between the ABS module and the HCU, if there is air in the hydraulic brake system, if the brake pressure transducer is faulted or if the ABS module is faulted internally, this DTC will set.
This pinpoint test is intended to diagnose the following:
- HCU
- ABS module