B1143
B1143-PASSENGER AIRBAG SQUIB 1 CIRCUIT RESISTANCE TOO LARGE [ZH]
- When Monitored:
With the ignition on. The Occupant Restraint Controller (ORC) monitors the resistance of the Passenger Airbag Squib circuits.
- Set Condition:
The Occupant Restraint Controller (ORC) monitors the resistance of the Passenger Airbag Squib circuits. The ORC will set this DTC if it detects an open or high resistance on the Passenger Airbag Squib circuits.
Diagnostic Test
1. DETERMINE ACTIVE OR STORED DTC
NOTE: Ensure that the battery is fully charged.
Turn the ignition on.
With the scan tool, read ORC DTCs.
Does the scan tool display active DTC: B1143-PASSENGER AIRBAG SQUIB 1 CIRCUIT RESISTANCE TOO LARGE [ZH]?
Yes
- Go To 2
No
- Go To 5
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 connectors.
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 appropriate Jumper to the Passenger Airbag Squib connector.
WARNING: To avoid serious or fatal injury, turn the ignition on, then reconnect the battery.
With the scan tool, read ORC DTCs.
Does the scan tool display active DTC: B1143-PASSENGER AIRBAG SQUIB 1 CIRCUIT RESISTANCE TOO LARGE [ZH]?
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.
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.
- Replace the Passenger Airbag.
- Perform *AIRBAG VERIFICATION TEST. Airbag System Verification Test
3. CHECK PASSENGER AIRBAG SQUIB LINE 2 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 ORC connectors.
NOTE: Check connectors - Clean and repair as necessary.
Connect the Load Tool ORC 8443-33 Adaptor to the ORC connector.
Measure the resistance of the Passenger Airbag Squib Line 2 circuit between the connector and the ORC 8443-33 Load Tool Adaptor pin 37.
Is the resistance below 1.0 ohm?
Yes
- Go To 4
No
- Repair the Passenger Airbag Squib Line 2 circuit for an open.
- Perform *AIRBAG VERIFICATION TEST. Airbag System Verification Test
4. CHECK PASSENGER AIRBAG SQUIB LINE 1 CIRCUIT FOR AN OPEN
Measure the resistance of the Passenger Airbag Squib Line 1 circuit between the connector and the ORC 8443-33 Load Tool Adaptor pin 38.
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 *AIRBAG VERIFICATION TEST. Airbag System Verification Test
No
- Repair the Passenger Airbag Squib Line 1 circuit for an open.
- Perform *AIRBAG VERIFICATION TEST. Airbag System Verification Test
5. 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 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 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.
- Rotate the steering wheel from stop to stop.
- 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
- Diagnose and repair the DTC(s).
No
- No problem found at this time. Erase all codes before returning the vehicle to the customer.