B1B2C
B1B2C-1st ROW PASSENGER SEAT BELT PRETENSIONER CIRCUIT LOW
For a complete wiring diagram Consult Diagrams/Electrical.
- When Monitored:
With the ignition on.
- Set Condition:
The Occupant Restraint Controller (ORC) monitors the resistance of the Passenger Seat Belt Tensioner circuits. The ORC will set this DTC if it detects low resistance on the Passenger Seat Belt Tensioner circuits.
Diagnostic Test
1. DETERMINE ACTIVE OR STORED DTC
NOTE: Ensure that the battery is fully charged.
NOTE: The scan tool, SRS Airbag Load Tool MRL 8443, and DVOM are required to perform the following test.
Turn the ignition on.
Select ACTIVE or STORED DTC:
ACTIVE DTC
- Go to 2
STORED DTC
- Go to 4
2. CHECK FOR SHORTED PASSENGER SEAT BELT PRETENSIONER
WARNING: To avoid serious or fatal injury, turn the ignition off, disconnect the battery and wait two minutes before proceeding.
Disconnect the Passenger Seat Belt Pretensioner connector.
NOTE: Check connectors - Clean and repair as necessary.
Connect the 8443 Load Tool and 8443-8 Jumper to the Passenger Seat Belt Pretensioner connector.
WARNING: To avoid serious or fatal injury, turn the ignition on, then reconnect the battery.
With the scan tool, read the active ORC DTCs.
Does the scan tool display: B1B2C-1st ROW PASSENGER SEAT BELT PRETENSIONER CIRCUIT LOW?
Yes
- Go to 3
No
- Replace the Passenger Seat Belt Pretensioner.
- Perform the *AIRBAG SYSTEM VERIFICATION TEST - VER 1. Airbag System Verification Test
3. CHECK (R56) PASSENGER SEAT BELT TENSIONER LINE 1 CIRCUIT AND (R54) PASSENGER SEAT BELT TENSIONER LINE 2 CIRCUIT FOR A SHORT TO GROUND
WARNING: To avoid serious or fatal injury, turn the ignition off, disconnect the battery and wait two minutes before proceeding.
Disconnect the 8443 Load Tool and Jumper from the Passenger Seat Belt Pretensioner connector.
Disconnect the ORC connectors.
NOTE: Check connectors - Clean and repair as necessary.
Connect the ORC Adaptor to the ORC C1 connector.
Measure the resistance of the (R56) Passenger Seat Belt Tensioner Line 1 circuit between ground and the ORC 8443-25 Adaptor.
Measure the resistance of the (R54) Passenger Seat Belt Tensioner Line 2 circuit between ground and the ORC 8443-25 Adaptor.
Is the resistance below 10k ohms on either circuit?
Yes
- Repair the Passenger Seat Belt Tensioner circuits with resistance below 10k ohms for a short to ground.
- Perform the *AIRBAG SYSTEM VERIFICATION TEST - VER 1. Airbag System Verification Test
No
WARNING: To avoid serious or fatal injury, turn the ignition off, disconnect the battery and wait two minutes before proceeding.
- Replace the ORC.
- Perform the *AIRBAG SYSTEM VERIFICATION TEST - VER 1. Airbag System Verification Test
4. 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: To avoid serious or fatal injury, turn the ignition off, disconnect the battery and wait two minutes before proceeding.
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: To avoid serious or fatal injury, turn the ignition on, then reconnect the battery.
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
- Select the appropriate diagnostic procedure.
No
- No problem found at this time. Erase all codes before returning the vehicle to the customer.