RAM 2500 Truck 2WD L6-359 5.9L DSL Turbo VIN D FI (1997)
Transmission Temperature Sensor/Switch: Testing and Inspection
NOTE: Applies to AUTOMATIC TRANSMISSION ONLY
To perform a complete test of this sensor and its circuitry, refer to DRB scan tool and appropriate Powertrain Diagnostics Procedures. To test the sensor
only, refer to the following:
1. Disconnect the wire harness connector from the temperature sensor. The sensor is located on the side of the transmission in the transmission
cooling line.
2. Test the resistance of the sensor with an input impedance (digital) volt-ohmmeter. The resistance (as measured across the sensor terminals) should
be as shown in the Sensor Resistance (OHMS)-Transmission Temperature Sensor resistance chart. Replace the sensor if it is not within the range
of resistance specified in the chart.
3. Test the resistance of the wire harness. Do this between the powertrain control module (PCM) wire harness connector terminal B-1 and the sensor
connector terminal. Also check between PCM terminal A-4 to the sensor connector terminal. Repair the wire harness as necessary if the resistance
is greater than 1 ohm.
