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Home >> Dodge and Ram >> 1993 >> Grand Caravan Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - Body Control Computer >> Diagnostic Procedure >> Entering On-Board Diagnostics >> SELECT SYSTEM Mode
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SELECT SYSTEM Mode

  1. This mode enables the technician to select system to be diagnosed. At DRB-II menu, press "4" (SELECT SYSTEM) key. Press ENTER key. DRB-II will display SELECT SYSTEM menu.
  2. At SELECT SYSTEM menu, press "3" (BODY) key. Press ENTER key. DRB-II should display BUS TEST IN PROGRESS, BUS OPERATIONAL. After a few seconds, SELECT MODULE menu should appear.
  3. If a bus failure message appears during BUS TEST IN PROGRESS, go to BODY CONTROL COMPUTER - VEHICLE COMMUNICATIONS tests. See BODY CONTROL COMPUTER TESTS DIRECTORY table. Always start at TEST 1A: FAULT MESSAGES.
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