PINPOINT TEST V : BXXXX:2B (any BXXXX DTC with a 2B failure type) Signal Cross Coupled: Notes
Diagnostic Overview
BXXXX:2B (any BXXXX DTC with a 2B failure type) Signal Cross Coupled
Refer to SUPPLEMENTAL RESTRAINT SYSTEM for schematic and connector information.
The RCM monitors all deployable device and sensor circuits for a signal cross coupled (short) between components. Signal cross coupled DTCs are present when one or both circuits of a component are shorted to one or both circuits of another component. Signal cross coupled DTCs will not set when the circuits of a single device are shorted together, a different DTC is present (for example, a DTC for circuit 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
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| 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. |
| 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 airbag 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. |
| B0070:2B | Driver Seatbelt Pretensioner "A" Deployment Control: Signal Cross Coupled | If the RCM detects a short between the driver safety belt anchor pretensioner circuits and the circuits of another SRS component, it sets this DTC and the DTC of the corresponding SRS component. |
| B0072:2B | Passenger Seatbelt Pretensioner "A" Deployment Control: Signal Cross Coupled | If the RCM detects a short between the passenger safety belt anchor pretensioner circuits and the circuits of another SRS component, it sets this DTC and the DTC of the corresponding SRS component. |
| B007E:2B | Driver Seatbelt Pretensioner "C" Deployment Control: Signal Cross Coupled | If the RCM detects a short between the driver safety belt retractor pretensioner circuits and the circuits of another SRS component, it sets this DTC and the DTC of the corresponding SRS component. |
| B007F:2B | Passenger Seatbelt Pretensioner "C" Deployment Control: Signal Cross Coupled | If the RCM detects a short between the passenger safety belt retractor pretensioner circuits and the circuits of another SRS component, it sets this DTC and the DTC of the corresponding SRS component. |
| B0082:2B | Passenger Seatbelt Load Limiter Deployment Control: Signal Cross Coupled | If the RCM detects a short between the passenger safety belt adaptive load limiter circuits and the circuits of another SRS component, it sets this DTC and the DTC of the corresponding SRS component. |
| B00B5:2B | Driver Seat Track Position Restraints Sensor: Signal Cross Coupled | If the RCM detects a short between the driver seat track position sensor circuits and the circuits of another SRS component, it sets this DTC and the DTC of the corresponding SRS component. |
| B00C5:2B | Passenger Seat Track Position Restraints Sensor: Signal Cross Coupled | If the RCM detects a short between the passenger seat track position sensor circuits and the circuits of another SRS component, it sets this DTC and the DTC of the corresponding SRS component. |
| B11CF:2B | Passenger Frontal Airbag Canister Vent: Signal Cross Coupled | If the RCM detects a short between the passenger airbag canister vent circuits and the circuits of another SRS component, it sets this DTC and the DTC of the corresponding SRS component. |
| B1404:2B | Driver Side Airbag Deployment Control: Signal Cross Coupled | If the RCM detects a short between the driver side airbag circuits and the circuits of another SRS component, it sets this DTC and the DTC of the corresponding SRS component. |
| B1405:2B | Driver Curtain Deployment Control 1: Signal Cross Coupled | If the RCM detects a short between the driver Safety Canopy® circuits and the circuits of another SRS component, it sets this DTC and the DTC of the corresponding SRS component. |
| B1407:2B | Passenger Side Airbag Deployment Control: Signal Cross Coupled | If the RCM detects a short between the passenger side airbag circuits and the circuits of another SRS component, it sets this DTC and the DTC of the corresponding SRS component. |
| B1408:2B | Passenger Curtain Deployment Control 1: Signal Cross Coupled | If the RCM detects a short between the passenger Safety Canopy® circuits and the circuits of another SRS component, it sets this DTC and the DTC of the corresponding SRS component. |
| B140C:2B | Second Row Driver Side Seatbelt Sensor: Signal Cross Coupled | If the RCM detects a short between the second row left safety belt buckle switch circuits and the circuits of another SRS component, it sets this DTC and the DTC of the corresponding SRS component. |
| B140D:2B | Second Row Passenger Side Seatbelt Sensor: Signal Cross Coupled | If the RCM detects a short between the second row right safety belt buckle switch circuits and the circuits of another SRS component, it sets this DTC and the DTC of the corresponding SRS component. |
| B141B:2B | Second Row Driver Inflatable Seatbelt Deployment Control: Signal Cross Coupled | If the RCM detects a short between the second row left safety belt inflator circuits and the circuits of another SRS component, it sets this DTC and the DTC of the corresponding SRS component. |
| B141C:2B | Second Row Passenger Inflatable Seatbelt Deployment Control: Signal Cross Coupled | If the RCM detects a short between the second row right safety belt inflator circuits and the circuits of another SRS component, it sets this DTC and the DTC of the corresponding SRS component. |
Visual Inspection and Diagnostic Pre-Checks
- Inspect the affected wiring harness(es) for damage, if accessible