B1B04
B1B04-DRIVER AIRBAG SQUIB 2 CIRCUIT LOWB1B04 - Driver Airbag Squib 2 Circuit Low:
WHEN MONITORED
With the ignition on.
SET CONDITION
The Occupant Restraint Controller (ORC) monitors the resistance of the Driver Squib 2 circuits. The ORC will set this DTC if it detects low resistance on the Driver Squib 2 circuits.
POSSIBLE CAUSES
- (R63) Driver squib 2 line 1 circuit or (R61) driver squib 2 line 2 circuit shorted to ground
- Steering control module
- Driver airbag
- Occupant restraint controller (ORC)
Diagnostic Test
1. DETERMINE ACTIVE OR STORED DTC
NOTE:
- Ensure that the battery is fully charged.
- 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 5
2. CHECK FOR SHORTED SQUIB CIRCUITS IN DRIVER AIRBAG
WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNITION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BEFORE PROCEEDING.
Disconnect the Driver Airbag Squib connectors.
WARNING: TO AVOID PERSONAL INJURY OR DEATH, DO NOT PLACE AN INTACT UNDEPLOYED AIRBAG FACE DOWN ON A HARD SURFACE, THE AIRBAG WILL PROPEL INTO THE AIR IF ACCIDENTALLY DEPLOYED.
NOTE: Check connectors - Clean and repair as necessary.
Connect the 8443 Load Tool and appropriate Jumper to the Driver Air-bag Squib connectors.
WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNITION ON, THEN RECONNECT THE BATTERY.
With the scan tool, read the active ORC DTCs.
Q: Does the scan tool display: B1B04-DRIVER AIRBAG SQUIB 2 CIRCUIT LOW?
YES: Go To 3
NO: Replace the Driver Airbag. Perform the AIRBAG SYSTEM VERIFICATION TEST - VER 1. Airbag System Verification Test
3. CHECK CLOCKSPRING SQUIB CIRCUITS FOR A SHORT TO GROUND
WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNITION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BEFORE PROCEEDING.
Disconnect the 8443 Load Tool Jumper from the Driver Airbag Squib connectors.
Disconnect the Steering Control Module C4 connector.
NOTE: Check connectors - Clean and repair as necessary.
Connect the 8443 Load Tool and appropriate Jumper to the Steering Control Module C4 connector.
WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNITION ON, THEN RECONNECT THE BATTERY.
With the scan tool, read the active ORC DTCs.
Q: Does the scan tool display: B1B04-DRIVER AIRBAG SQUIB 2 CIRCUIT LOW?
YES: Go To 4
NO: Replace the Steering Control Module. Perform the AIRBAG SYSTEM VERIFICATION TEST - VER 1. Airbag System Verification Test
4. CHECK (R63) DRIVER SQUIB 2 LINE 1 CIRCUIT AND (R61) DRIVER SQUIB 2 LINE 2 CIRCUIT FOR A SHORT TO GROUND
WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNITION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BEFORE PROCEEDING.
Disconnect the 8443 Load Tool and Jumper from the Steering Control Module connector.
Disconnect the ORC connectors.
NOTE: Check connectors - Clean and repair as necessary.
Connect the Load Tool ORC Adaptor 8443-24 to the ORC C2 connector.
Measure the resistance of the (R63) Driver Squib 2 Line 1 circuit between ground and the adaptor.
Measure the resistance of the (R61) Driver Squib 2 Line 2 circuit between ground and the adaptor.
Q: Is the resistance below 10k ohms for either measurement?
YES: Repair the Driver Squib 2 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:
- IF THE OCCUPANT RESTRAINT CONTROLLER (ORC) IS DROPPED AT ANY TIME, IT MUST BE REPLACED. FAILURE TO TAKE THE PROPER PRECAUTIONS CAN RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT AND PERSONAL INJURY OR DEATH.
- TO AVOID PERSONAL INJURY OR DEATH, 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
5. CHECKING STORED OR INTERMITTENT CODES
NOTE: Diagnose and repair all active codes before diagnosing stored codes. Refer to complete list of airbag system diagnostic procedures.
With the scan tool, record and erase all Airbag System Module DTCs.
WARNING: TO AVOID PERSONAL INJURY OR DEATH, 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 chafed, 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 PERSONAL INJURY OR DEATH, 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.
Q: 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.