B1B0E
B1B0E-PASSENGER AIRBAG SQUIB 2 CIRCUIT OPEN
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. 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 load tool in the tests below substitutes a suspect squib with a known good component. The use of the ORC connector adapter tool provide a test point as well as a method for opening the shorting bar connections within the harness connector.
- When Monitored:
The ORC sends out a 40 mA diagnostic current on each squib voltage supply circuit at power up and every 500 ms thereafter while the module is awake.
- Set Condition:
This DTC sets when the ORC detects an open on the squib circuit for more than 2.5 seconds. This DTC transitions from active to stored when the module sees a recovery from an open condition for greater than 2.5 seconds.
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding.Restraints System Pre-Diagnostic Procedure.
Diagnostic Test
1. DETERMINE ACTIVE OR STORED DTC
NOTE: Ensure the battery is fully charged.
Turn the ignition on.
With the scan tool, read ORC DTCs.
Is the DTC active or stored?
ORC - ACTIVE DTC
- Go To 2
ORC - STORED DTC
- Perform *RESTRAINTS SYSTEM INTERMITTENT TEST.Restraints System Intermittent Test.
2. CHECK FOR OPEN SQUIB CIRCUITS IN PASSENGER AIRBAG
WARNING: To avoid serious or fatal injury, turn the ignition off, disconnect the battery and wait two minutes before proceeding.
Disconnect the Passenger Airbag Squib connector.
WARNING: To avoid serious or fatal injury, 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 the 8443-8 Jumper to the Passenger Airbag Squib connectors.
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: B1B0E-PASSENGER AIRBAG SQUIB CIRCUIT OPEN?
Yes
- Go To 3
No
WARNING: To avoid serious or fatal injury, turn the ignition off, disconnect the battery and wait two minutes before proceeding.
Replace the Passenger Airbag.
- Perform *RESTRAINTS SYSTEM VERIFICATION TEST.Restraints System Verification Test
3. CHECK (R64) PASSENGER SQUIB 2 LINE 1 CIRCUIT FOR AN OPEN
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 the 8443-8 Jumper from the Passenger Airbag Squib connector.
Disconnect the ORC connectors.
NOTE: Check connectors - Clean and repair as necessary.
Connect the Load Tool ORC 8443-28 Adaptor to the ORC connectors.
Measure the resistance of the (R64) Passenger Squib 2 Line 1 circuit between the Passenger Airbag Squib connector and the Load Tool ORC 8443-28 Adaptor.
Is the resistance below 1.0 ohm?
Yes
- Go to 4
No
- Repair or replace the (R64) Passenger Squib 2 Line 1 circuit. Then, Go To 4
4. CHECK (R62) PASSENGER SQUIB 2 LINE 2 CIRCUIT FOR AN OPEN
Measure the resistance of the (R62) Passenger Squib 2 Line 2 circuit between the Passenger Airbag Squib connector and the Load Tool ORC 8443-28 Adaptor.
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 take the proper precautions can result in accidental airbag deployment and serious or fatal injury.
- Replace the ORC.
- Perform *RESTRAINTS SYSTEM VERIFICATION TEST.Restraints System Verification Test
No
- Repair or replace the (R62) Passenger Squib 2 Line 2 circuit.
- Perform *RESTRAINTS SYSTEM VERIFICATION TEST.Restraints System Verification Test