Test 2A - Blank Scan Tool Message Screen

1995 Dodge and Ram Pickup R3500, 2D Pickup, 8.0 W, RWD, AutomaticSECTION Test 2A - Blank Scan Tool Message Screen
NOTE: For connector terminal identification, see CONNECTOR IDENTIFICATION in appropriate TESTS W/CODES article below. For appropriate wiring diagram, see WIRING DIAGRAMSΒ  section. Perform TEST VER-1 after each repair.
  • TESTS W/CODES - 3.9L
  • TESTS W/CODES - 5.2L GASOLINE
  • TESTS W/CODES - 5.9L GASOLINE
    1. Turn ignition off. Disconnect scan tool from Data Link Connector (DLC). Using an external ohmmeter, check for a good ground circuit in DLC. See DATA LINK CONNECTOR POWER & GROUND IDENTIFICATION table. If ground circuit is okay, go to next step. If ground circuit is not okay, repair as necessary. Perform TEST VER-1.
    2. Turn ignition on. Using an external voltmeter, check for battery voltage in DLC, on wire identified in DATA LINK CONNECTOR POWER & GROUND IDENTIFICATION table. If battery voltage is not present, go to next step. If battery voltage is present, go to step 4).
    3. Check appropriate fuse identified in DATA LINK CONNECTOR FUSE IDENTIFICATION table. If fuse is blown, replace fuse. Perform TEST VER-1. If fuse is not blown, inspect and repair wiring as necessary. Perform TEST VER-1.
    4. Try a different scan tool cable. If scan tool screen is no longer blank, replace defective scan tool cable. Perform TEST VER-1. If scan tool screen is still blank, try a different scan tool. If scan tool screen is no longer blank, replace defective scan tool. Perform TEST VER-1.
DATA LINK CONNECTOR POWER & GROUND IDENTIFICATION

Model Power Circuit Ground Circuit
Ram Pickup
PCM DLC Light Green/Black Black/Tan
Air Bag/ABS DLC Pink Black
Ram Van/Wagon
PCM DLC Dark Blue Black/Tan
Air Bag/ABS DLC Pink Black
DATA LINK CONNECTOR FUSE IDENTIFICATION

Model Location Fuse
Ram Pickup
PCM DLC Inst. Panel Fuse Block No. 9
Air Bag/ABS DLC Inst. Panel Fuse Block No. 17
Ram Van/Wagon
PCM DLC (1) (1) *
Air Bag/ABS DLC Inst. Panel Fuse Block No. 17
(1) Powered from ignition switch.
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.