Battery Temperature Sensor Calibration Check

1990 Dodge and Ram Dakota LE, 2D Pickup, 3.9 X, 4WD, AutomaticSECTION Battery Temperature Sensor Calibration Check
  1. This checks battery temperature sensor. Connect DRB-II to engine harness connector, Sensor Test Mode 01. Display reading on DRB-II should be between .2-3.0 volts.
  2. Check for battery drain-down condition. Put the system in Engine Running Test Mode 61. Divide reading on display by 10. Display on DRB-II should be 2-5 volts. If not as specified, replace SMEC.
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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.