Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Diagnostic Test
- READ AND RECORD DTCS AND ENVIRONMENTAL DATA - ERASE DTCS AND CHECK FOR DTC TO RETURN
- With the scan tool, read DTCs in all Electronic Control Units (ECUs) and record on the repair order.
- With the scan tool, run a vehicle Scan Report, or record the Environmental Data related to the DTCs.
- With the scan tool, erase all DTCs.
- Turn the ignition off for a minimum of 10.0 seconds.
- Turn the ignition on.
- Using the recorded Environmental Data and the When Monitored Conditions above, operate the vehicle in the conditions that set the DTC.
- With the scan tool, read DTCs.
Did the DTC return?
Yes
- Go To 2
No
- Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to TESTING FOR AN INTERMITTENT CONDITION .
- VERIFY COMMUNICATION WITH BCM
- With the scan tool, read the active modules on the bus.
Does the scan tool show the BCM as active on the bus?
Yes
- Go To 3
No
- Perform the No Response From BCM diagnostic procedure. Refer to NO RESPONSE FROM ECU .
- With the scan tool, read the active modules on the bus.
- CHECK BCM FOR ACTIVE DTCS
- With the scan tool, erase BCM DTCs.
- Turn the ignition off for a minimum of 10.0 seconds.
- Turn the ignition on.
- With the scan tool, read BCM DTCs and record on the repair order.
Are any active DTCs present?
Yes
- Perform the appropriate diagnostic procedure. Refer to DIAGNOSTIC CODE INDEX .
No
- Go To 4
- CHECK THE VEHICLE CONFIGURATION INFORMATION WITH SCAN TOOL
- With the scan tool run an ECU Details Report, read the Original and Current VINs, and the Body Style of the vehicle.
Does the information displayed match the vehicle?
Yes
- Replace the Body Control Module (BCM) in accordance with the Service Information.
- Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
No
- Go To 5
- With the scan tool run an ECU Details Report, read the Original and Current VINs, and the Body Style of the vehicle.
- PERFORM THE RESTORE VEHICLE CONFIGURATION ROUTINE
- With the scan tool, perform the Restore Vehicle Configuration routine.
- Turn the ignition off for a minimum of 10.0 seconds.
- Turn the ignition on.
- With the scan tool, read DTCs.
Does the scan tool display B222C-00-VEHICLE CONFIGURATION NOT PROGRAMMED as active?
Yes
- Replace the Body Control Module (BCM) in accordance with the Service Information.
- Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
No
- The condition or conditions that originally set this DTC are not present at this time. Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to TESTING FOR AN INTERMITTENT CONDITION . If no problems are found, test complete.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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