Scan Tool Blank Screen
WARNING: This page is about a different car, the 2000 Dodge Ram Wagon and 2000 Dodge Ram Van. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Perform BODY VERIFICATION TEST under VERIFICATION TESTS after each repair.
NOTE:
Unless instructed otherwise in test step, reconnect any previously disconnected components and connectors.
- Turn ignition off. Disconnect scan tool from Data Link Connector (DLC). Using an external ohmmeter, check resistance between ground and DLC terminal No. 5, ground circuit (Black/Violet wire). See Figure. If resistance is less than 5 ohms, leave scan tool disconnected and go to next step. If resistance is 5 ohms or more, repair open Black/Violet wire.
- Using ohmmeter, check resistance between ground and DLC terminal No. 4, ground circuit (Black/Tan wire). If resistance is less than 5 ohms, leave scan tool disconnected and go to next step. If resistance is 5 ohms or more, repair open Black/Tan wire.
- Using an external voltmeter connected to ground, check voltage on DLC terminal No. 16, fused B (+) circuit (Violet wire). If voltage is more than 10 volts, go to next step. If voltage is 10 volts or less, repair open Violet wire.
- Install scan tool using a different scan tool cable. If scan tool is operational, replace original scan tool cable. If scan tool screen is still blank, go to next step.
- Install a known-good scan tool. If scan tool is operational, repair or replace original scan tool. If scan tool screen is still blank, refer to scan tool manufacturer's operating manual for further instructions.