LEMON Manuals: Even more car manuals for everyone
Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 424 (5.7L - DTCS B1810 To P0204 - 2500 Hd & 3500 Hd) >> Diagnosis And Testing >> P018C-Fuel Pressure Sensor Circuit Low >> 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 a 5-Volt reference DTC is present, repair that DTC before proceeding with this test.

    1. Turn the ignition on.
    2. With the scan tool, read DTCs.

      Is the DTC active?

      Yes 

      • Go To  2

      No 

  2. CHECK THE FUEL RAIL PRESSURE SENSOR 
    1. Turn the ignition off.
    2. Disconnect the FRPS harness connector.
    3. Turn the ignition on.
      NOTE:

      The P018D-FUEL PRESSURE SENSOR CIRCUIT HIGH DTC should become active or pending with the connector disconnected.

      Does the DTC display as described above?

      Yes 

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

      No 

      • Go To  3
  3. CHECK THE (K181) FRPS SIGNAL CIRCUIT FOR A SHORT TO GROUND 
    2. Turn the ignition off.
    3. Disconnect the PCM C1 harness connector.
    4. Measure the resistance between ground and the (K181) FRPS Signal circuit in the FRPS harness connector.

      Is the resistance below 10k Ohms?

      Yes 

      • Repair the (K181) FRPS Signal circuit for a short to ground.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .

      No 

      • Go To  4
  4. CHECK FOR THE (K181) FRPS SIGNAL CIRCUIT SHORTED TO THE (K914) SENSOR GROUND 
    1. Measure the resistance between the (K181) FRPS Signal circuit and the (K914) Sensor Ground circuit at the FRPS harness connector.

      Is the resistance below 10k Ohms?

      Yes 

      • Repair the short between the (K181) FRPS Signal circuit and (K914) Sensor Ground circuit.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .

      No 

      • Go To  5
  5. POWERTRAIN CONTROL MODULE 
    2. Let the engine run until it reaches normal operating temperature.
    3. Using the scan tool, record any DTCs.

      Did the DTC return?

      Yes 

      • Replace the Powertrain Control Module in accordance with the Service Information.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .

      No 

      • Repair is complete.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .
scientia non olet · About LEMON Manuals