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.NOTE:
A front door must remain open whenever checking or erasing Global Telematics Box Module (TBM2) DTCs.
- 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 TBM2 DTCs.
NOTE:A front door must remain open whenever checking or erasing Global Telematics Box Module (TBM2) DTCs.
Did the DTC return?
Yes
- Go To 2
No
- Perform the appropriate INTERMITTENT CONDITION diagnostic procedure. Refer to TESTING FOR AN INTERMITTENT CONDITION .
- With the scan tool, read DTCs in all Electronic Control Units (ECUs) and record on the repair order.
- PERFORM THE PROXI CONFIGURATION ROUTINE IN THE TBM2
- With the scan tool, perform the Proxi Configuration in the TBM2.
- With the scan tool, record and erase the TBM2 DTCs.
- Cycle the ignition switch from on to off, wait five seconds and then back to on.
- With the scan tool, read the active TBM2 DTCs.
Is the DTC active?
Yes
- Replace the TBM2 in accordance with the Service Information. Refer to MODULE, GLOBAL TELEMATICS BOX, REMOVAL .
- Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
No
- Test complete, the condition or conditions that originally set this DTC are not present at this time.
- Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
NO RELATED
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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.