Diagnostic Test
- DETERMINE ACTIVE OR STORED DTC NOTE:
Make sure that the battery is fully charged.
NOTE:The scan tool, SRS Load Tool Kit (special tool #8443A, SRS Load Tool), and DVOM are required to perform the following test.
- CHECK FOR OPEN DRIVER SEAT BELT TENSIONER
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.
- Disconnect the Driver Seat Belt Tensioner connector.NOTE:
Check connectors - Clean and repair as necessary.
- Connect the SRS Load Tool Kit (special tool #8443A, SRS Load Tool) and SRS Load Tool Jumper (special tool #8443-8, Jumper, SRS Load) to the Driver Seat Belt Tensioner connector.WARNING:
Turn the ignition on, then reconnect the 12-volt battery and wait two minutes before proceeding. Failure to follow these instructions may result in possible serious or fatal injury.
- With the scan tool, read the active ORC DTCs.
Does the scan tool display: B1B2A-1st ROW DRIVER SEAT BELT PRETENSIONER CIRCUIT OPEN?
Yes
- Go To 3
No
- Replace the Driver Seat Belt Tensioner in accordance with the Service Information.
- Perform the AIRBAG SYSTEM VERIFICATION TEST. Refer to STANDARD PROCEDURE - AIRBAG SYSTEM VERIFICATION TEST .
- Disconnect the Driver Seat Belt Tensioner connector.
- CHECK THE (R55) DRIVER SEAT BELT RETRACTOR LINE 1 CIRCUIT FOR AN 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.
- Disconnect the SRS Load Tool Kit (special tool #8443A, SRS Load Tool) and SRS Load Tool Jumper (special tool #8443-8, Jumper, SRS Load) from the Driver Seat Belt Tensioner connector.
- Disconnect the ORC connectors.NOTE:
Check connectors - Clean and repair as necessary.
- Connect the SRS Load Tool Adaptor (special tool #8443-25, 56 Way ACM Adapter) to the ORC C1 connector.
- Measure the resistance of the (R55) Driver Seat Belt Retractor Line 1 circuit between the Driver Seat Belt Tensioner connector cavity 2 and the SRS Load Tool Adaptor (special tool #8443-25, 56 Way ACM Adapter) cavity 32-16.
Is the resistance below 1.0 Ohm?
Yes
- Go To 4
No
- Repair the open (R55) Driver Seat Belt Tensioner Line 1 circuit.
- Perform the AIRBAG SYSTEM VERIFICATION TEST. Refer to STANDARD PROCEDURE - AIRBAG SYSTEM VERIFICATION TEST .
- CHECK THE (R53) DRIVER SEAT BELT RETRACTOR LINE 2 CIRCUIT FOR AN OPEN
- Measure the resistance of the (R53) Driver Seat Belt Retractor Line 2 circuit between the Driver Seat Belt Tensioner connector cavity 1 and the SRS Load Tool Adaptor (special tool #8443-25, 56 Way ACM Adapter) cavity 32-15.
Is the resistance below 1.0 Ohm?
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 ORC in accordance with Service Information.
- Perform the AIRBAG SYSTEM VERIFICATION TEST. Refer to STANDARD PROCEDURE - AIRBAG SYSTEM VERIFICATION TEST .
No
- Repair the open (R53) Driver Seat Belt Tensioner Line 2 circuit.
- Perform the AIRBAG SYSTEM VERIFICATION TEST. Refer to STANDARD PROCEDURE - AIRBAG SYSTEM VERIFICATION TEST .
- Measure the resistance of the (R53) Driver Seat Belt Retractor Line 2 circuit between the Driver Seat Belt Tensioner connector cavity 1 and the SRS Load Tool Adaptor (special tool #8443-25, 56 Way ACM Adapter) cavity 32-15.
- CHECKING STORED OR INTERMITTENT CODES NOTE:
Diagnose and repair all active codes before diagnosing stored codes.
- With the scan tool, record and erase all Airbag System Module DTCs.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.
- Using the wiring diagram/schematic as a guide, inspect the related wiring and connectors for chaffed, pierced, pinched, and partially broken wires, and for broken, bent, pushed out, corroded, and contaminated terminals. Repair as necessary.
- Reconnect all disconnected components and harness connectors.WARNING:
Turn the ignition on, then reconnect the 12-volt battery and wait two minutes before proceeding. Failure to follow these instructions may result in possible serious or fatal injury.
- With the scan tool, monitor for active codes while performing the following:
- Wiggle the wiring harness and connectors of the related airbag circuit.
- Continue the test until either a code becomes active or the problem area is isolated.
- In the previous steps you have attempted to recreate the conditions responsible for setting the DTC in question/causing the intermittent condition.
Are any ACTIVE DTCs present?
Yes
- Perform the appropriate DTC. Refer to OCCUPANT RESTRAINT CONTROLLER (ORC) - DIAGNOSTIC CODE INDEX .
No
- No problem found at this time. Erase all codes before returning the vehicle to the customer.
- With the scan tool, record and erase all Airbag System Module DTCs.


