Pinpoint Test F : P182B, P182C, P182D, P183D: Notes
WARNING: This page is about a different variant/trim than selected.
Refer to All Wheel Drive (AWD) for schematic and connector information.
Normal Operation and Fault Conditions
This power transfer unit (PTU) fluid temperature sensor is located in the (PTU) (6F50/55 only). It is a temperature-sensitive device called a thermistor. The resistance value of the sensor varies with temperature change. The PCM monitors the voltage across the transfer case fluid temperature sensor to determine the temperature of the power transfer unit (PTU) fluid temperature.
The AWD_CLTCH_CMD PID percentage displayed on the scan tool is an inverse value. 95% = Clutch is released, 5% = Clutch fully applied.
NOTE:
0% is an invalid command. A DTC may set if 0% is commanded using output state control.
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| P182B | Transfer Case Fluid Temperature Sensor Circuit Range/Performance | This DTC sets when the PCM detects an open, a short to ground or voltage on the sensor circuit. |
| P182C | Transfer Case Fluid Temperature Sensor Circuit Low | This DTC sets when the PCM detects a short to ground an open, or low voltage on the sensor circuit. |
| P182D | Transfer Case Fluid Temperature Sensor Circuit High | This DTC sets when the PCM detects the sensor circuit voltage is high. |
| P183D | Transfer Case Fluid Over Temperature | This DTC sets in the PCM when the PTU fluid temperature has exceeded it's maximum operating temperature. |
Possible Causes
- Wiring, terminals and connectors
- Transfer case fluid temperature sensor (Power Transfer unit Sensor)
- PCM
Visual Inspection and Diagnostic Pre-checks
- Transfer case fluid temperature sensor wiring harness
- PTU operation is normal and quiet
- PTU fluid level