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Home >> Dodge and Ram >> 1993 >> Intrepid Base, 3.3 T >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - Body Control Computer >> Connector Identification >> Test 15A - Overhead Travel Information System (OTIS)
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Test 15A - Overhead Travel Information System (OTIS)

NOTE: For connector terminal identification, see CONNECTOR IDENTIFICATION  . For appropriate wiring diagram, see WIRING DIAGRAMS  at end of article.
  1. Check if OTIS screen is blank or if it displays NO RESPONSE. If screen is blank or if NO RESPONSE message is displayed, go to TEST 15B. If screen is not blank or if NO RESPONSE message is not displayed, go to next step.
  2. Check if all Light Emitting Diode (LED) segments on OTIS screen light up. If all LED segments do not light up, replace OTIS module. Perform VERIFICATION PROCEDURE VER-1.
  3. If all LED segments light up, use DRB-II to initialize OTIS self-test (system test). If OTIS displays FAIL, replace OTIS module. Perform VERIFICATION PROCEDURE VER-1.
  4. If OTIS does not display FAIL, check if CCD is displayed on OTIS screen. If CCD is displayed on OTIS screen, replace OTIS module. Perform VERIFICATION PROCEDURE VER-1.
  5. If CCD is not displayed on OTIS screen, check if outside temperature display is inoperative or wrong. If temperature display is not operating properly, go to TEST 15E  .
  6. If temperature display is operating properly, check if average Miles Per Gallon (MPG) display is inoperative or wrong. If MPG display is not operating properly, go to TEST 15C  .
    NOTE: The Miles Per Gallon (MPG), instantaneous fuel economy, and distance to empty calculations (displays) are only accurate to plus or minus 5 percent.
  7. If MPG display is operating properly, check if instantaneous fuel economy display is inoperative or wrong. If fuel economy display is not operating properly, go to TEST 15C  .
  8. If fuel economy display is operating properly, check if distance to empty display is inoperative or wrong. If distance to empty display is not operating properly, go to TEST 8A.
  9. If distance to empty display is operating properly, check if trip odometer display is inoperative or wrong. If trip odometer display is not operating properly, go to TEST 15C  .
  10. If trip odometer display is operating properly, check if OTIS illumination is inoperative. If OTIS illumination is not operating properly, go to TEST 5A. If OTIS illumination is operating properly check for OTIS estimated time problem, go to TEST 15D  .
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