Normal Operation and Fault Conditions
WARNING: This page is about a different car, the 2020 Ford EcoSport and 2019 Ford EcoSport. However, it is still accessible from the selected car via links, so may be relevant.
The ABS module receives BPP switch input from the PCM through the GWM over the HS-CAN. The ABS module compares this information against brake fluid pressure input to determine if the BPP switch input is valid. An incorrectly installed BPP switch can cause a signal plausibility concern. An implausible signal can also be created if a driver is resting one foot on the brake pedal while using the other foot to press the accelerator.
PPT AC ABS MODULE DTC FAULT TRIGGER CONDITIONS
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| C0040:64 | Brake Pedal Switch "A": Signal Plausibility Failure | Sets when the ABS module detects the brake pedal switch input is continuously active for more than 6 minutes when driving faster than 20 km/h (12 mph) or after accelerating up to a speed greater than 40 km/h (24 mph) and decelerating down to a speed less than 3 km/h (2 mph) 4 times with no change in brake pedal switch input. The DTC can also set if the ABS module detects the HCU pressure signal exceeds 15 bar and the stoplamp switch signal is inactive for longer than 1 second. |
| C0044:28 | Brake Pressure Sensor "A": Signal Bias Level Out of Range/Zero Adjustment | The ABS module calculates a signal offset for the pressure sensor in the HCU. When the ignition is set to ON, the ABS module begins calculates a new offset and compares this one to the offset stored in memory. If the newly calculated offset and the stored offset do not match, this DTC sets in continuous memory. |