Pinpoint Test H : Stability Control Sensor Signal Failure DTCS: Notes
Diagnostic Overview
Diagnostics in this article 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