B1BB9

B1BB9-AIRBAG SQUIB CIRCUIT COUPLING

For a complete wiring diagram REFER to DIAGRAMS/ELECTRICAL .

Theory of Operation


When powered, the Occupant Restraint Controller (ORC) sends a test current to the squibs to verify the integrity of the squib and wiring. Use of the load tool in the tests below substitutes a suspect squib with a known good component. The ORC connector adapter tool provide a test point as well as a method for opening the shorting bar connections within the harness connector. 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.Restraints System Pre-Diagnostic Procedure.


Diagnostic Test


1. DETERMINE ACTIVE OR STORED DTC
Turn the ignition on.
With the scan tool, perform ORC reset.
With the scan tool, read ORC DTC's.
Is B1BB9-AIRBAG SQUIB CIRCUIT COUPLING active or stored?

ORC - ACTIVE DTC


- Go To 2


ORC - STORED DTC


- Perform *RESTRAINTS SYSTEM INTERMITTENT TEST.Restraints System Intermittent Test.


2. CHECK FOR ADDITIONAL ACTIVE SQUIB DTCS
With the scan tool, read ORC DTC's.
Are there squib specific DTCs set as active in addition to B1BB9-Airbag Squib Circuit Coupling?

Yes


- Repair any other active squib specific DTCs before repairing for DTC B1BB9-Airbag Squib Circuit Coupling.


No


- Go To 3


3. USE THE SCAN TOOL TO IDENTIFY THE COUPLED CIRCUITS
With the scan tool, identify the two or more Squib circuits that read SET.
Were two or more Squib Circuits SET?

Yes


- Repair the two or more Squib circuits for a Squib Circuit Coupling.
- Perform *RESTRAINTS SYSTEM VERIFICATION TEST. Restraints System Verification Test.


No


- Perform *RESTRAINTS SYSTEM INTERMITTENT TEST.Restraints System Intermittent Test.