B1BB9

B1BB9 - Airbag Squib Circuit Coupling

For a complete wiring diagram, refer to.

Theory of Operation

When powered, the occupant restraint controller sends a test current to the squibs to verify the integrity of the squib and wiring. The presence of this code indicates that any two circuits, from two or more squibs, have become shorted or "coupled" together.

• When Monitored: The ORC checks for the presence of coupled squib circuits once during the initialization process.

• Set Condition: This DTC sets when the ORC detects that any two circuits, from two or more squibs, have become shorted or "coupled" together. Once set, this DTC is latched for the entire ignition cycle.






Always perform the Pre - Diagnostic Troubleshooting procedure before proceeding.

Test Step 1 - Determine Active or Stored DTC

• Ensure the battery is fully charged.

• Turn the ignition ON.

• Perform ORC module reset. Access the miscellaneous function menu from the ORC ECU overview screen on the scan tool to perform this operation.

• With the scan tool, read ORC DTCs.

Is the DTC active or stored?

ORC - active DTC

• Go to Test Step 2 => [ Test Step 2 - Check for Additional Active Squib DTCs ]

ORC - Stored DTC

• Perform the Restraints System Intermittent Test. Refer to => Non - DTC Based Diagnostics. ORC Restraints System Intermittent Test

Test Step 2 - Check for Additional Active Squib DTCs

• With the scan tool, read ORC DTCs.

Are there squib specific DTCs set as active in addition to B1BB9 - Airbag Squib Circuit Coupling?

Yes

• Repair all other active squib specific DTCs.

No

• Go to Test Step 3 => [ Test Step 3 - Use the Scan Tool to Identify the Coupled Circuits ]

Test Step 3 - Use the Scan Tool to Identify the Coupled Circuits

• With the scan tool, identify the two or more squib circuits that read SET.

Are two or more squib circuits SET?

Yes

• Repair the two or more squib circuits for a squib circuit coupling condition.

• Perform the Restraints System Intermittent Test. Refer to => Non - DTC Based Diagnostics. ORC Restraints System Intermittent Test

No

• Perform the Restraints System Intermittent Test. Refer to => Non - DTC Based Diagnostics. ORC Restraints System Intermittent Test