B1B22
B1B22-RIGHT SIDE CURTAIN AIRBAG SQUIB 1 CIRCUIT OPEN
For a complete wiring diagram, refer to the Wiring Information Electrical Diagrams.
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. These circuits are maintained in a "floating" configuration at the module (connected to neither power nor ground) as protection against inadvertent deployment. Use of the SRS Load Tool Kit 8443 in the tests below substitutes a suspect squib with a known good component. The use of the SRS Load Tool Adapter provides a test point as well as a method for opening the shorting bar connections within the harness connector.
- When Monitored:
With the ignition on, the Occupant Restraint Controller (ORC) monitors the resistance of the Right Curtain Squib 1 circuits.
- Set Condition:
When the ORC has detected an open circuit or high resistance in the Right Curtain Squib 1 circuits.
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Restraints System Pre-Diagnostic Procedure.
1. DETERMINE ACTIVE OR STORED DTC
NOTE: Ensure the battery is fully charged.
1. Turn the ignition on.
2. With the scan tool, read the active Occupant Restraint Controller DTCs.
Does the scan tool display active: B1B22-RIGHT SIDE CURTAIN AIRBAG SQUIB 1 CIRCUIT OPEN?
Yes
- Go To 2
No
- Perform the RESTRAINTS SYSTEM INTERMITTENT TEST. . Restraints System Intermittent Condition Test
2. RIGHT SIDE CURTAIN AIRBAG CIRCUITS OPEN
WARNING: Turn the ignition off, disconnect the 12-volt battery and wait two minutes before proceeding. Failure to follow these instructions may result in possible serious or fatal injury.
1. Disconnect the Right Side Curtain Airbag harness connector.
WARNING: Do not place an intact uncoupled curtain airbag face down on a hard surface, the airbag will propel into the air if accidentally deployed. Failure to follow these instructions may result in possible serious or fatal injury.
NOTE: Check harness connectors - Clean and repair as necessary.
2. Connect the SRS Load Tool Kit 8443 and the SRS Load Tool Jumper 8443-5 to the Right Side Curtain Airbag harness connector.
WARNING: Turn the ignition on, then reconnect the 12-volt battery. Failure to follow these instructions may result in possible serious or fatal injury.
3. With the scan tool, read the active Occupant Restraints Controller DTCs.
Does the scan tool display: RIGHT SIDE CURTAIN SQUIB 1 CIRCUIT OPEN?
Yes
- Go To 3
No
- Replace the Right Side Curtain Airbag.
- Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Restraints System Verification Test.
3. (R4) RIGHT CURTAIN SQUIB 1 LINE 2 OR (R2) RIGHT CURTAIN SQUIB 1 LINE 1 CIRCUIT OPEN
WARNING: Turn the ignition off, disconnect the 12-volt battery and wait two minutes before proceeding. Failure to follow these instructions may result in possible serious or fatal injury.
1. Disconnect the SRS Load Tool Kit 8443 and the SRS Load Tool Jumper 8443-5 from the Right Side Curtain Airbag harness connector.
2. Disconnect the ORC harness connectors.
NOTE: Check harness connectors - Clean and repair as necessary.
3. Connect the SRS Load Tool Adaptor 8443-25 to the ORC harness connectors.
4. Measure the resistance of the (R4) Right Curtain Squib 1 Line 2 cavity 2 between the Right Side Curtain Airbag harness connector and the SRS Load Tool Adaptor 8443-25 32 way cavity 2.Measure the resistance of the (R2) Right Curtain Squib 1 Line 1 cavity 1 between the Right Side Curtain Airbag harness connector and the SRS Load Tool Adaptor 8443-25 32 way cavity 1.
Is the resistance below 1.0 Ohm on each circuit?
Yes
- WARNING: If the Occupant Restraint Controller (ORC) is dropped at any time, it must be replaced. Failure to follow these instructions may result in possible serious or fatal injury.
- Replace the Occupant Restraint Controller.
- Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Restraints System Verification Test.
No
- Repair open or high resistance in (R4) and (R2) Right Curtain Squib 1 circuits.
- Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Restraints System Verification Test.