1997 Neon code 44

The battery temperature sensor is located at the front of the battery tray next to the battery hold down clamp. Its about the size of a pea and is retained by a pressed steel hex nut. Its connector is under the battery tray. The following info is from the Chrysler neon manual :... "The sensor is used to determine the battery temperature.This data ,together with the monitored line voltage, is used by the PCM ( powertrain control module) to vary the battery charging rate.System voltage will be higher at colder temperatures and is gradually reduced at warmer temperatures.The battery sensor is also used for OBD11 diagnostics. Certain faults and OBD11 monitors are either enabled or disabled depending upon battery temperature sensor input ( example: disable purge and EGR, enable LDP). Most OBD11 monitors are disabled below 20 degrees F". .....From the fuel system section of the manual...."The PCM uses the temperature of the battery area to control the charge rate.The signal is used to regulate the system voltage. The system voltage is higher at cold temperatures and is gradually reduced as temperature around the battery increases."...............To test the sensor you`ll have to remove it and take it indoors unless you have a heated garage: Disconnect the two-wire pigtail harness from the sensor.Attatch ohmmeter leads to the wire terminals of the pigtail harness. At room temperature of 25 degrees C an ohmmeter reading of 9000 to 11000 ohms should be observed.If out of spec replace. I`ve no idea of the cost but it looks cheap enough.Good luck.

Slaughterhouse wrote:

Wow! Thank you very much! That was more information than I could hope for, thanks!