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Home >> Jeep >> 1992 >> Cherokee Limited >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> DTC & Fault Codes/Messages >> DRB-II Problems & Error Messages >> Blank DRB-II Message Screen
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Blank DRB-II Message Screen

  1. Connect DRB-II to a different vehicle. If message screen is still blank, DRB-II or cable adapter are faulty. Substitute to find faulty component.
  2. If message screen is not blank, DRB-II and cable adapter are functioning properly. Inspect diagnostic connector for proper wire placement, damaged terminals or pushed out pins. Repair as necessary.
  3. If diagnostic connector is okay, use a DVOM to check resistance between ground and Black wire (Black/Yellow wire on Wrangler) at engine diagnostic connector. If resistance is 10 ohms or more, repair open in Black wire (Black/Yellow wire on Wrangler).
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