RAM 2500 Truck 4WD L6-5.9L DSL Turbo VIN 7 (2001)
The ambient temperature sensor cannot be adjusted or repaired and, if faulty or damaged, it must be replaced.
The ambient temperature sensor is a variable resistor that operates on a five-volt reference signal sent to it by the Compass/Mini-Trip Computer
module. The resistance in the sensor changes as temperature changes, changing the return circuit voltage to the Compass/Mini-Trip Computer
module. Based upon the resistance in the sensor the Compass/Mini-Trip Computer module senses a specific voltage on the return circuit, which it
is programmed to correspond to a specific temperature.
