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Repairing Blank Scan Tool Screen

NOTE: For connector terminal identification, see CONNECTOR IDENTIFICATION. For wiring diagram, see wiring diagram.
  1. Turn ignition off. Disconnect scan tool from Chrysler Collision Detection (CCD) data link connector. Inspect, clean and repair connector as necessary. Perform TEST VER-1A. If connector is okay, use an external ohmmeter to check resistance between chassis ground and CCD data link connector terminals No. 4 (Black/Tan wire) and No. 5 (Black/Tan wire). If resistance is more than 5 ohms, repair open in appropriate Black/Tan wire. Perform TEST VER-1A. If resistance is less than 5 ohms, go to next step.
  2. Using an external voltmeter, check voltage between CCD data link connector terminal No. 16 (Red/White wire) and terminals No. 4 (Black/Tan wire) and No. 5 (Black/Tan wire). If reading is less than 10 volts, repair open in Red/White wire. Perform TEST VER-1A. If reading is more than 10 volts, go to next step.
  3. Try a different scan tool cable. If scan tool screen is no longer blank, replace defective scan tool cable. Perform TEST 1A. If scan tool screen is still blank, replace defective scan tool.
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