DTC Descriptor
DTC B0023 01: Right Roof Rail Deployment Loop Short to BatteryDTC B0023 02: Right Roof Rail Deployment Loop Short to Ground
DTC B0023 04: Right Roof Rail Deployment Loop Open Circuit
DTC B0023 0D: Right Roof Rail Deployment Loop Resistance Above Threshold
DTC B0023 0E: Right Roof Rail Deployment Loop Resistance Below Threshold
Diagnostic Fault Information
Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
Circuit | Short to Ground | High Resistance | Open | Short to Voltage | Signal Performance |
|---|---|---|---|---|---|
Roof Rail Module - Right High Circuit | B0023 02 | B0023 0D | B0023 04 | B0023 01 | B0023 0E |
Roof Rail Module - Right Low Circuit | B0023 02 | B0023 0D | B0023 04 | B0023 01 | B0023 0E |
Circuit/System Description
During a side or frontal crash of sufficient force, the inflatable restraint sensing and diagnostic module (SDM) will allow current to flow through the deployment loop in order to deploy the roof side rail module. The SDM performs continuous diagnostic tests on the deployment loops to check for proper circuit continuity and for shorts to ground or voltage. A shorting bar used within the roof rail module connector will short together both roof rail module - right high and low circuits when the connector is disconnected. This will help to prevent unwanted deployment of the inflator module during servicing.
Conditions for Running the DTC
Ignition voltage is between 9-16 volts.
Conditions for Setting the DTC
B0023 01
The roof rail module - right high and/or low circuit is short to voltage for 120 milliseconds.
B0023 02
The roof rail module - right high and/or low circuit is short to ground for 120 milliseconds.
B0023 04
The roof rail module - right high and/or low circuit is open for 120 milliseconds.
B0023 0D
The roof rail module - right deployment loop resistance is more than 3.9 ohms for 120 milliseconds.
B0023 0E
The roof rail module - right deployment loop resistance is less than 1.1 ohms for 120 milliseconds.
Action Taken When the DTC Sets
| • | The SDM commands the AIR BAG indicator ON via serial data communications. |
| • | The SIR System is disabled and no deployments are allowed. |
Conditions for Clearing the DTC
| • | The condition responsible for setting the DTC no longer exists and the scan tool Clear DTCs function is used. |
| • | A history DTC will clear once 255 malfunction-free ignition cycles have occurred. |
Reference Information
Schematic Reference
Connector End View Reference
Electrical Information Reference
Special Tools Required
J 38715-A SIR Driver/Passenger Load Tool
Circuit/System Testing
- Ignition OFF, remove the right rear trim and disconnect the roof rail module - right connector. Refer to Quarter Upper Trim Panel Replacement .
- Connect the J 38715-A to the harness side of the roof rail module - right connector. Use the PASSENGER INFLATOR connector located on the load tool.
- Ignition ON, use a scan tool to observe the SIR DTC display. Verify DTC B0023 is set in history.
- Ignition OFF, disconnect and remove the J 38715-A . Then remove the SDM connector. Refer to SDM replacement in Repair Instructions for connector location.
- Test the high and low circuits between the SDM and roof rail module - right for a short to voltage, short to ground, or open/low resistance.
- If all circuits test normal then replace the SDM.
Important: When removing connectors inspect for damage or corrosion. Damage or corrosion in the following requires repair or replacement of the affected component/connector.
• The roof rail module - right • The SDM module • The roof rail module - right wiring harness connector • The SDM wiring harness connector
| ⇒ | If DTC B0023 is history replace the roof rail module - right. |
| ⇒ | If any of the above conditions are found make the appropriate repair. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
| • | Control Module References for SDM replacement, setup, and programming |
