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 NOTE:
To erase this DTC from the module's internal memory, the Body Control Module (BCM) must detect an ignition OFF/ON cycle, along with the normal operation of the system associated with this DTC.
- Turn the ignition on.
- 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, read Body Control Module (BCM) DTCs.
Is the DTC Active?
Yes
- Go To 2
No
- Perform the appropriate INTERMITTENT CONDITION diagnostic procedure. Refer to TESTING FOR AN INTERMITTENT CONDITION .
- SUBSTITUTE THE PTC 3 RELAY - ERASE DTCS AND CHECK FOR THE DTC TO RETURN NOTE:
When removing a relay from the PDC Assembly, do not rock or wiggle the relay sideways during removal. Lift the relay upward, using fingers or suitable pliers, at the middle of the relay body and inspect the relay terminals for proper contact.
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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.