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Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 435 (6.7L Diesel - DTCS P1209 To P2281 - 2500 Hd & 3500 Hd) >> Diagnosis And Testing >> P205D-(Diesel Exhaust Fluid) REDUCTANT Tank Temperature Sensor Circuit High >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2013 RAM 3500 HD and 2013 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
  1. ACTIVE DTC 
    1. Turn the ignition on for one minute, engine not running.
    2. With the scan tool check for active DTCs.

      Is the DTC active?

      Yes 

      • Go To  2

      No 

      • Perform the INTERMITTENT CONDITION - 6.7L diagnostic procedure. Refer to STANDARD PROCEDURE .
  2. CHECK THE DEF TANK TEMPERATURE SENSOR SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE 
    1. Turn ignition off.
    2. Disconnect the DEF Supply Pump Assembly harness connector.
    3. Turn the ignition on.
    4. Measure the voltage on the DEF Tank Temperature Sensor Signal circuit at the DEF Supply Pump Assembly harness connector.

      Does the voltage measure above 5.1 volts?

      Yes 

      • Repair the DEF Tank Temperature Sensor Signal circuit for a short to voltage.
      • Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to STANDARD PROCEDURE .

      No 

      • Go To  3
  3. CHECK THE FUEL TEMPERATURE SENSOR 
    1. Ignition on, engine not running.
    2. Connect a jumper between the DEF Tank Temperature Sensor Signal circuit and the DEF Tank Temperature Sensor Return circuit at the DEF Supply Pump Assembly harness connector.
    3. With the scan tool check for DTCs.
    4. Monitor the scan tool for one minute.

      Did DTC P205C set as active after shorting the circuits together?

      Yes 

      • Replace the DEF Tank Level/Temperature Sensor in accordance with the service information.
      • Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to STANDARD PROCEDURE .

      No 

      • Go To  4
  4. CHECK THE DEF TANK TEMPERATURE SENSOR SIGNAL CIRCUIT FOR AN OPEN/HIGH RESISTANCE 
    1. Turn ignition off.
    2. Disconnect the DEF Dosing Control Unit C2 harness connector.
    3. Measure the resistance of the DEF Tank Temperature Sensor Signal circuit between the DEF Supply Pump Assembly harness connector and the DEF Dosing Control Unit C1 harness connector.

      Is the resistance below 5.0 Ohms?

      Yes 

      • Go To  5

      No 

      • Repair the DEF Tank Temperature Sensor Signal circuit for an open or high resistance.
      • Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to STANDARD PROCEDURE .
  5. CHECK THE DEF TANK LEVEL TEMPERATURE RETURN CIRCUIT FOR AN OPEN/HIGH RESISTANCE 
    1. Measure the resistance of the DEF Tank Temperature Sensor Return circuit between the DEF Supply Pump Assembly harness connector and the DEF Dosing Control Unit C2 harness connector.

      Is the resistance below 5.0 Ohms?

      Yes 

      • Replace the DEF Dosing Control Unit in accordance with the service information.
      • Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to STANDARD PROCEDURE .

      No 

      • Repair the DEF Tank Temperature Sensor Return circuit for an open or high resistance.
      • Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to STANDARD PROCEDURE .
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