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Test 2A - Blank DRB Message Screen

NOTE: For connector terminal identification, see CONNECTOR IDENTIFICATION  . For wiring diagram, see WIRING DIAGRAMS  . After each repair, perform TEST VER-1.
  1. Disconnect DRB. Using an external voltmeter, check voltage between chassis ground and Data Link Connector (DLC) terminal No. 2 Pink wire. DLC is located under dash, left of steering column. If voltage is less than 10 volts, repair Pink wire or Red wire as necessary.
  2. If voltage is more than 10 volts, turn ignition off. Using an external ohmmeter, check resistance between chassis ground and DLC terminal No. 6 (Black/Light Green wire). If resistance is more than 20 ohms, repair open in Black/Light Green wire.
  3. If resistance is less than 20 ohms, try a different DRB adapter cable. If DRB screen is no longer blank, replace defective DRB adapter cable.
  4. If DRB screen is still blank, try a different DRB cartridge. If DRB screen is no longer blank, replace defective DRB cartridge. If DRB screen is still blank, replace defective DRB.
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