Pinpoint Test H : Stability Control Sensor Signal Failure DTCS: Notes
Diagnostic Overview
Diagnostics in this service information assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Service Information for information about these practices.
Refer to Vehicle Dynamic Systems for schematic and connector information.
Normal Operation and Fault Conditions
The RCM measures vehicle yaw rate, lateral acceleration and longitudinal acceleration and sends the information to the ABS module over a private HS-CAN. This private HS-CAN is used only for communication between the RCM and the ABS module. The yaw rate sensor, lateral and longitudinal accelerometers are contained in the RCM.
A circuit fault such as a short or an open disrupts communication between the modules and the ABS module sets a DTC. An incorrectly installed RCM sends invalid information to the ABS module, which sets a DTC.
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| C0061:22 | Lateral Acceleration Sensor: Signal Amplitude > Maximum | These DTCs set in continuous memory if the stability control sensor information sent by the RCM is outside a calculated or predetermined range. |
| C0061:64 | Lateral Acceleration Sensor: Signal Plausibility Failure | |
| C0062:22 | Longitudinal Acceleration Sensor: Signal Amplitude > Maximum | |
| C0062:23 | Longitudinal Acceleration Sensor: Signal Stuck Low | |
| C0062:64 | Longitudinal Acceleration Sensor: Signal Plausibility Failure | |
| C0063:22 | Yaw Rate Sensor: Signal Amplitude > Maximum | |
| C0062:64 | Yaw Rate Sensor: Signal Plausibility Failure | |
| U0074:88 | Control Module Communication Bus B Off: Bus Off | This DTC sets in continuous memory if the communication bus between the ABS module and the RCM is shorted, open or has excessive resistance. |
Possible Sources
- Wiring, terminals or connectors
- RCM
- ABS module