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.
2001 Jeep Cherokee Classic, RWDFACTORY OEM SERVICE PROCEDURE
Scan Tool Blank Screen
NOTE:
Low temperatures will affect visibility of display. Adjust contrast to compensate for condition.
- Check continuity between ground and terminals No. 4 (Black wire) and No. 5 (Black/Tan wire) at Data Link Connector (DLC). See Figure . If continuity exists, go to next step. If continuity does not exist, repair open in appropriate wire.
- Turn ignition switch to ON position. Measure voltage between ground and terminal No. 16 (Tan/Black wire) at DLC. If battery voltage does not exist, repair power distribution circuit as necessary. See DATA LINK CONNECTORS article in WIRING DIAGRAMS. If battery voltage exists, repair or replace scan tool or scan tool cable as necessary. Perform BODY VERIFICATION TEST under VERIFICATION TESTS.
Factory Service Tools
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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.