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.
Scan Tool Blank Screen
Using DVOM, check continuity between ground and terminals No. 4 (Black wire) and No. 5 (Black/Tan wire) on Data Link Connector (DLC). See Figure . Continuity to ground should exist. Repair as needed. Using a DVOM, measure voltage between ground and terminal No. 16 (Tan/Black wire) on DLC. Battery voltage should exist. If battery voltage does not exist, inspect fuse No. 17 in Power Distribution Center (PDC). See COMPONENT LOCATIONS . Replace as needed. If battery voltage exists, replace scan tool cable or scan tool as necessary. Perform BODY VERIFICATION TEST under VERIFICATION TESTS.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.