Test 85A - Testing OTIS Mileage & Distance Functions

1994 Plymouth Grand Voyager Base, 31THSECTION Testing
NOTE: Perform TEST 81AΒ  before proceeding with this test. For connector terminal ID, see CONNECTOR IDENTIFICATIONΒ  and WIRING DIAGRAMSΒ . Drive vehicle to update OTIS and perform TEST VER-1 - VERIFICATION PROCEDUREΒ  after each repair.
  1. Using scan tool, read Body Control Module (BCM) DTCs. If scan tool displays NO VEHICLE SPEED SENSOR SIGNAL, see G - TESTS W/CODES article in the ENGINE PERFORMANCE section. If scan tool does not display NO VEHICLE SPEED SENSOR SIGNAL, go to next step.
  2. If scan tool displays THROTTLE POSITION SENSOR VOLTAGE HIGH, see G - TESTS W/CODES article in the ENGINE PERFORMANCE section. If scan tool does not display THROTTLE POSITION SENSOR VOLTAGE HIGH, go to next step.
  3. If scan tool displays THROTTLE POSITION SENSOR VOLTAGE LOW, see G - TESTS W/CODES article in the ENGINE PERFORMANCE section. If scan tool does not display THROTTLE POSITION SENSOR VOLTAGE LOW, replace BCM.
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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.