B1C28 Left Side Thorax Squib 1 High
September 25, 2019
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B1C28 code - The Occupant Restraint Controller (ORC) monitors the voltage on the left seat squib circuits. The ORC will set this DTC if it detects voltage on the left seat squib circuits.
Possible cause B1C28 code:
- Left seat squib line 1 circuit shorted to battery
- Left seat squib line 2 circuit shorted to battery
- Left seat squib airbag
- Occupant Restraint Controller (ORC)
Select ACTIVE or STORED DTC:
ACTIVE, go to step 2.
STORED, go to step 4.
Disconnect the left seat squib airbag connector.
To avoid serious or fatal injury, do not place an intact non-deployed left seat squib airbag face down on a hard surface, the airbag will propel into the air if accidentially deployed.
Turn the ignition on, then reconnect the 12 volt battery and wait two minutes before proceeding.
With the scan tool read the active ORC DTC.
Does the scan tool display B1C28 code?
Yes, go to step 3.
No, turn the ignition off disconnect the 12 volt battery and wait two minutes before proceeding. Replace the left seat squib.
Disconnect the ORC connectors. Turn the ignition off disconnect the 12 volt battery and wait two minutes before proceeding.
Measure the voltage of the left seat squib line 1 circuit cavity 1 between the ORC connector and ground.
Measure the voltage of the left seat squib line 2 circuit cavity 2 between the ORC connector and ground.
Is there any voltage present on either circuit?
Yes, repair the left seat squib circuit with voltage present for a short to battery.
No, turn the ignition off disconnect 12 volt battery and wait two minutes before proceeding. If the Occupant Restraint Controller (ORC) is dropped at any time, itt must be replaced. Failure to take the proper precautions can result in accidential airbag deployment. Replace the ORC, perform the Airbag system verification.
Possible cause B1C28 code:
- Left seat squib line 1 circuit shorted to battery
- Left seat squib line 2 circuit shorted to battery
- Left seat squib airbag
- Occupant Restraint Controller (ORC)
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| Wiring for DTC B1C28 |
Diagnostic test B1C28 code
Step 1. Determine active or stored DTC
Make sure that the battery is fully charged. Turn the ignition on, with the scan tool read the active ORC DTC.Select ACTIVE or STORED DTC:
ACTIVE, go to step 2.
STORED, go to step 4.
Step 2. Check for shorted squib circuits in left seat squib airbag
Turn the ignition off disconnect the 12volt battery and wait two minutes berfore proceeding.Disconnect the left seat squib airbag connector.
To avoid serious or fatal injury, do not place an intact non-deployed left seat squib airbag face down on a hard surface, the airbag will propel into the air if accidentially deployed.
Turn the ignition on, then reconnect the 12 volt battery and wait two minutes before proceeding.
With the scan tool read the active ORC DTC.
Does the scan tool display B1C28 code?
Yes, go to step 3.
No, turn the ignition off disconnect the 12 volt battery and wait two minutes before proceeding. Replace the left seat squib.
Step 3. Check the left seat squib line 1 circuit or left seat squib line 2 circuit for a short to battery
Turn the ignition off disconnect the 12 volt battery and wait two minutes before preceeding.Disconnect the ORC connectors. Turn the ignition off disconnect the 12 volt battery and wait two minutes before proceeding.
Measure the voltage of the left seat squib line 1 circuit cavity 1 between the ORC connector and ground.
Measure the voltage of the left seat squib line 2 circuit cavity 2 between the ORC connector and ground.
Is there any voltage present on either circuit?
Yes, repair the left seat squib circuit with voltage present for a short to battery.
No, turn the ignition off disconnect 12 volt battery and wait two minutes before proceeding. If the Occupant Restraint Controller (ORC) is dropped at any time, itt must be replaced. Failure to take the proper precautions can result in accidential airbag deployment. Replace the ORC, perform the Airbag system verification.
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