LEMON Manuals: Even more car manuals for everyone
Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 433 (6.7L Diesel - DTCS P0008 To P040D - 2500 Hd & 3500 Hd) >> Diagnosis And Testing >> P0193-Fuel Pressure Sensor 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 
    NOTE:

    If there are any 5-Volt supply DTCs present, repair those DTCs before proceeding.

    1. Turn the ignition on.
    2. With the scan tool, record all Freeze frame data.
    3. With the scan tool, erase DTCs.
    4. Turn the ignition off for 75 seconds.
    5. Turn the ignition on.
    6. With the scan tool, read DTCs.

      Did the DTC reset?

      Yes 

      • Go To  2

      No 

  2. CHECK THE (K181) FRP SENSOR SIGNAL 1 CIRCUIT FOR A SHORT TO VOLTAGE 
    1. Turn the ignition off.
    2. Disconnect the Fuel Rail Pressure Sensor harness connector.
    3. Turn the ignition on.
    4. Measure the voltage of the (K181) FRP Sensor Signal 1 circuit at the FRP Sensor harness connector.

      Is the reading above 5.2 volts?

      Yes 

      • Repair the (K181) Fuel Rail Pressure Sensor Signal 1 circuit for a short to voltage.
      • Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to STANDARD PROCEDURE .

      No 

      • Go To  3
  3. CHECK FOR THE (K181) FRP SENSOR SIGNAL 1 CIRCUIT SHORTED TO THE (K350) 5-VOLT SUPPLY CIRCUIT 
    1. Turn the ignition off.
    2. Disconnected PCM C1 harness connector.
    3. Measure the resistance between the (K181) FRP Sensor Signal 1 circuit and the (K350) 5-Volt Supply circuit at the FRP Sensor harness connector.

      Is the resistance below 10k Ohms?

      Yes 

      • Repair the short between the (K181) Fuel Rail Pressure Sensor Signal 1 circuit and the (K350) 5-Volt Supply circuit.
      • Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to STANDARD PROCEDURE .

      No 

      • Go To  4
  4. CHECK THE (K181) FRP SENSOR SIGNAL 1 CIRCUIT FOR AN OPEN/HIGH RESISTANCE 
    1. Measure the resistance of the (K181) FRP Sensor Signal 1 circuit between the FRP Sensor harness connector and the PCM C1 harness connector.

      Is the resistance below 5.0 Ohms?

      Yes 

      • Go To  5

      No 

      • Repair the (K181) Fuel Rail Pressure Sensor Signal 1 circuit for an open or high resistance.
      • Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to STANDARD PROCEDURE .
  5. CHECK THE (K179) FRP SENSOR 2 SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE 
    1. Turn the ignition off.
    2. Disconnect the Fuel Rail Pressure Sensor harness connector.
    3. Turn the ignition on.
    4. Measure the voltage of the (K179) FRP Sensor 2 Signal circuit at the FRP Sensor harness connector.

      Is the reading above 5.2 volts?

      Yes 

      • Repair the (K179) Fuel Rail Pressure Sensor Signal 2 circuit for a short to voltage.
      • Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to STANDARD PROCEDURE .

      No 

      • Go To  6
  6. CHECK FOR THE (K179) FRP SENSOR SIGNAL 2 CIRCUIT SHORTED TO THE (K350) 5-VOLT SUPPLY CIRCUIT 
    1. Turn the ignition off.
    2. Disconnected PCM C1 harness connector.
    3. Measure the resistance between the (K179) FRP Sensor Signal 2 circuit and the (K350) 5-Volt Supply circuit at the FRP Sensor harness connector.

      Is the resistance below 10k Ohms?

      Yes 

      • Repair the short between the (K179) Fuel Rail Pressure Sensor 2 Signal circuit and the (K350) 5-Volt Supply circuit.
      • Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to STANDARD PROCEDURE .

      No 

      • Go To  7
  7. CHECK THE (K179) FRP SENSOR SIGNAL 2 CIRCUIT FOR AN OPEN/HIGH RESISTANCE 
    1. Measure the resistance of the (K179) FRP Sensor Signal 2 circuit between the FRP Sensor harness connector and the PCM C1 harness connector.

      Is the resistance below 5.0 Ohms?

      Yes 

      • Go To  8

      No 

      • Repair the (K1791) Fuel Rail Pressure Sensor Signal 2 circuit for an open or high resistance.
      • Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to STANDARD PROCEDURE .
  8. CHECK THE (K180) SENSOR RETURN FOR AN OPEN/HIGH RESISTANCE 
    1. Measure the resistance of the (K180) Sensor Return circuit between the FRP Sensor harness connector and the PCM C1 harness connector.

      Is the resistance below 5.0 Ohms?

      Yes 

      • Go To  9

      No 

      • Repair the (K180) Sensor Return circuit for an open or high resistance.
      • Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to STANDARD PROCEDURE .
  9. CHECK THE FUEL RAIL PRESSURE SENSOR 
    1. Turn the ignition off.
    2. Reconnect the PCM C1 harness connector.
    3. Reconnect the FRP Sensor harness connector.
    4. Turn the ignition on.
    5. With the scan tool, erase DTCs.
    6. While monitoring scan tool, connect a jumper between the (K181) FRP Sensor Signal 1 circuit and the (K180) Sensor Return circuit at the FRP Sensor harness connector.

      Does the DTC P0192 set?

      Yes 

      • Replace the Fuel Rail Pressure Sensor in accordance with the service information.
      • Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to STANDARD PROCEDURE .

      No 

      • Replace and program the Powertrain Control Module in accordance with the service information.
      • Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to STANDARD PROCEDURE .
scientia non olet · About LEMON Manuals