Pinpoint Test - DTC: AA
BXXXX:2B (any BXXXX DTC with a 2B failure type) Signal Cross Coupled
Refer to Wiring Diagrams Cell 46 for schematic and connector information.
Normal Operation and Fault Conditions
The RCM monitors all deployable device and sensor circuits for a signal cross coupled (short) between components. Signal cross coupled Diagnostic Trouble Codes (DTCs) are present when one or both circuits of a component are shorted to one or both circuits of another component. Signal cross coupled Diagnostic Trouble Codes (DTCs) do not set when the circuits of a single device are shorted together, a different DTC is present (for example, a DTC for circuit resistance below threshold). The RCM sends a message to the IPC to illuminate the airbag warning indicator. When a normal loop fault is present (one loop is either shorted to battery/ground, open circuit or low resistance), then signal cross coupled diagnostics are not active. Once the normal loop fault is repaired, the signal cross coupled diagnostics resume.
DTC Fault Trigger Conditions
Description | Fault Trigger Conditions | |||
|---|---|---|---|---|
DTC | ||||
B0001:2B | Driver Frontal Stage 1 Deployment Control: Signal Cross Coupled | If the RCM detects a short between the driver airbag stage 1 circuits and the circuits of another SRS component, it sets this DTC and the DTC of the corresponding SRS component. | ||
B0002:2B | Driver Frontal Stage 2 Deployment Control: Signal Cross Coupled | If the RCM detects a short between the driver airbag stage 2 circuits and the circuits of another SRS component, it sets this DTC and the DTC of the corresponding SRS component. | ||
B0004:2B | Driver Knee Bolster Deployment Control: Signal Cross Coupled | If the RCM detects a short between the driver lower airbag circuits and the circuits of another SRS component, it sets this DTC and the DTC of the corresponding SRS component. | ||
B0005:2B | Collapsible Steering Column Deployment Control: Signal Cross Coupled | If the RCM detects a short between the deployable steering column circuits and the circuits of another SRS component, it sets this DTC and the DTC of the corresponding SRS component. | ||
B0010:2B | Passenger Frontal Stage 1 Deployment Control: Signal Cross Coupled | If the RCM detects a short between the passenger airbag stage 1 circuits and the circuits of another SRS component, it sets this DTC and the DTC of the corresponding SRS component. | ||
B0011:2B | Passenger Frontal Stage 2 Deployment Control: Signal Cross Coupled | If the RCM detects a short between the passenger airbag stage 2 circuits and the circuits of another SRS component, it sets this DTC and the DTC of the corresponding SRS component. | ||
B0013:2B | Passenger Knee Bolster Deployment Control: Signal Cross Coupled | If the RCM detects a short between the passenger knee bolster circuits and the circuits of another SRS component, it sets this DTC and the DTC of the corresponding SRS component. | ||
B0050:2B | Driver Seatbelt Sensor: Signal Cross Coupled | If the RCM detects a short between the driver safety belt buckle switch circuits and the circuits of another SRS component, it sets this DTC and the DTC of the corresponding SRS component. | ||
B0052:2B | Passenger Seatbelt Sensor: Signal Cross Coupled | If the RCM detects a short between the passenger safety belt buckle switch circuits and the circuits of another SRS component, it sets this DTC and the DTC of the corresponding SRS component. | ||
2016 Mustang workshop publication supplied to Mustang Atlas. Original technical text and illustrations; HTML formatting by Mustang Atlas. Source page numbering is retained for traceability. Follow the configuration, revision, warnings, and cross-references in the material. About this edition.