B1C2A, B1C2E Left Side Seat Thorax Squib 1 Shorted Together

B1C2A, B1C2E code - The Occupant Restraint Controller (ORC) monitors the resistance of the left seat squib circuits. The ORC will set this DTC if it detects low resistance between the left seat squib circuits.

Detail DTC:
- B1C2A Left Side Seat Thorax Squib 1 Shorted Together
- B1C2E Right Side Seat Thorax Squib 1 Shorted Together

B1C2A code
Possible causes B1C2A, B1C2E code:
- Left Seat squib line 1 circuit shorted to the left seat squib line 2 circuit
- Left seat squib airbag
- Occupant Restraint Controller (ORC)

Diagnostic test B1C2A, B1C2E 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 the left seat squib airbag

Disconnect the left seat squib airbag connector, with the scan tool read the active ORC DTC.

Does the scan tool display: B1C2A/B1C2E ?

Yes, go to step 3.
No, replace the left seat squib airbag. Perform the Airbag system verification.

Step 3. Check left seat squib line 1 circuit for a short to the left seat squib line 2 circuit

Disconnect the ORC connectors, check connectors-clean and repair as necessary. Measure the resistance between the left seat squib line 1 circuit and left seat squib 2 circuit at the SRS harness connector.

Is the resistance below 10k Ohms?

Yes, repair the left squib line 1 circuit for a short to the left seat squib line 2 circuit.
No, replace the ORC and perform the Airbag system verification.


Step 4. Checking stored or intermittent codes

Diagnose and repair all active codes before diagnosing stored codes.
With the scan tool record and erase all airbag system module DTC. Turn the ignition off disconnect the 12 volt battery and wait two minutes before proceeding. Failure to follow these instructions may result in possible serious or fatal injury.

Using the wiring diagram/schematic as a guide, inspect the related wiring and connectors for chafed, pierced, pinched, and partially broken wires, and broken, bent, pushed out, corroded, and contaminated terminals. Repair as necessary. Reconnect all disconnected components and harness connectors.
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 DTC present?

Yes, refer to based diagnostic ORC and perform the appropriate diagnostic procedure.
No, no problem found at this time. Erase all codes before returning the vehicle to the customer.

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