LEMON Manuals: Even more car manuals for everyone
Home >> Chrysler >> 2012 >> 300 C, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 19 (6.4L - DTCS P2305 To U1431) >> Diagnosis And Testing >> P3426-Cylinder 4 Deactivation Control Performance >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different variant/trim than selected.
  1. ACTIVE DIAGNOSTIC TROUBLE CODE (DTC) 
    NOTE:

    Diagnose any Misfire DTCs before continuing.

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

      Is the DTC active at this time?

      Yes 

      • Go To  2.

      No 

      • Refer to STANDARD PROCEDURE and perform the INTERMITTENT CONDITION diagnostic procedure.
  2. CHECKING MDS SOLENOID CIRCUIT FROM THE PCM SIDE OF THE C101 IN-LINE CONNECTOR 
    NOTE:

    The DTC must not be active for the actuator test to operate properly, clear all DTC before continuing.

    1. Turn the ignition off.
    2. Disconnect the C101 harness connector located behind the left side cylinder head.
    3. Using a 12-volt test light, jump from the Ground circuit to the (K452) MDS Solenoid No. 4 Control circuit in the C101 harness connector (PCM side).
    4. Turn the ignition on.
    5. Using the scan tool, actuate the MDS Solenoid No. 4.

      Does the 12-volt test light flash on and off?

      Yes 

      • Go To  3.

      No 

      • Go To  7.
  3. MDS SOLENOID RESISTANCE 
    1. Turn the ignition off.
    2. Measure the resistance between the Ground circuit and the (K452) MDS Solenoid No. 4 Control circuit in the C101 harness connector (MDS side).
      NOTE:

      It is important to follow the below temp/resistance values to ensure an accurate reading.

      MDS SOLENOID RESISTANCE
      TEMPERATURE VALUE RESISTANCE - MINIMUM RESISTANCE - MAXIMUM
      -18° C (0° F) 7.22 ? 8.12 ?
      0° C (32° F) 7.92 ? 8.82 ?
      20° C (68° F) 8.72 ? 9.62 ?
      38° C (100° F) 9.42 ? 10.32 ?
      66° C (150° F) 10.62 ? 11.52 ?
      93° C (200° F) 11.82 ? 12.72 ?
      121° C (250° F) 12.82 ? 13.72 ?
      149° C (300° F) 14.02 ? 14.92 ?

      Is the resistance within an acceptable range?

      Yes 

      • Go To  10.

      No 

      • Go To  4.
  4. GROUND CIRCUIT OPEN (MDS SIDE) 
    1. Turn the ignition off.
    2. Gain access to the MDS Solenoid. Refer to SOLENOID, MULTIPLE DISPLACEMENT [ESG], REMOVAL .
    3. Disconnect the MDS harness connector.
    4. Measure the resistance of the Ground circuit between the C101 harness connector and the MDS 4 harness connector.

      Is the resistance below 5.0 Ohms?

      Yes 

      • Go To  5.

      No 

      • Repair the open in the Ground circuit.
      • Refer to STANDARD PROCEDURE and perform the POWERTRAIN VERIFICATION TEST.
  5. (K452) MDS SOLENOID NO. 4 CONTROL CIRCUIT SHORTED TO GROUND (MDS SIDE) 
    Fig 1: Checking MDS Solenoid Control Circuit For Short To Ground
    GC0142000Courtesy of CHRYSLER GROUP, LLC
    1. Turn the ignition off.
    2. Measure the resistance between ground and the (K452) MDS Solenoid No. 4 Control circuit in the MDS Solenoid 4 harness connector.

      Is the resistance below 100 Ohms?

      Yes 

      • Repair the short to ground in the (K452) MDS Solenoid No. 4 Control circuit between the C101 harness connector and the MDS harness connector.
      • Refer to STANDARD PROCEDURE and perform the POWERTRAIN VERIFICATION TEST.

      No 

      • Go To  6.
  6. (K452) MDS SOLENOID NO. 4 CONTROL CIRCUIT OPEN (MDS SIDE) 
    1. Measure the resistance of the (K452) MDS Solenoid No. 4 Control circuit from the MDS Solenoid No. 4 harness connector to the C101 harness connector.

      Is the resistance below 5.0 Ohms?

      Yes 

      No 

      • Repair the open in the (K452) MDS Solenoid No. 4 Control circuit between the C101 harness connector and the MDS harness connector.
      • Refer to STANDARD PROCEDURE and perform the POWERTRAIN VERIFICATION TEST.
  7. GROUND CIRCUIT OPEN BETWEEN THE C101 IN-LINE CONNECTOR AND THE PCM 
    1. Turn the ignition off.
    2. Disconnect the PCM C2 harness connector.
    3. Using a 12-volt test light connected to the 12 volts, probe the Ground circuit in the C101 harness connector (PCM side).

      Does the test light illuminate brightly?

      Yes 

      • Go To  8.

      No 

      • Repair the Ground circuit between the C101 connector and PCM C2 harness connector.
      • Refer to STANDARD PROCEDURE and perform the POWERTRAIN VERIFICATION TEST.
  8. (K452) MDS SOLENOID NO. 4 CONTROL CIRCUIT SHORTED TO GROUND (PCM SIDE) 
    1. Measure the resistance between ground and the (K452) MDS Solenoid No. 4 Control circuit in the C101 harness connector (PCM side).

      Is the resistance below 100 Ohms?

      Yes 

      • Repair the short to ground in the (K452) MDS Solenoid No. 4 Control circuit between the PCM harness connector and the C101 harness connector.
      • Refer to STANDARD PROCEDURE and perform the POWERTRAIN VERIFICATION TEST.

      No 

      • Go To  9.
  9. (K452) MDS SOLENOID NO. 4 CONTROL CIRCUIT OPEN (PCM SIDE) 
    1. Measure the resistance of the (K452) MDS Solenoid No. 4 Control circuit from the C101 harness connector to the PCM C2 harness connector.

      Is the resistance below 5.0 Ohms?

      Yes 

      No 

      • Repair the open in the (K452) MDS Solenoid No. 4 Control circuit between the C101 harness connector and the PCM C2 harness connector.
      • Refer to STANDARD PROCEDURE and perform the POWERTRAIN VERIFICATION TEST.
  10. MDS SOLENOID 4 
    Fig 2: View Of MDS Solenoids
    GC0094374Courtesy of CHRYSLER GROUP, LLC
    1. Turn the ignition off.
    2. Remove the Intake Manifold in accordance with the service information. Refer to SOLENOID, MULTIPLE DISPLACEMENT [ESG], REMOVAL .
    3. Reconnect the PCM C2 harness connector.
    4. Turn the ignition on.
    5. With the scan tool actuate the MDS Solenoid 4.

      Can you feel and hear the Solenoid Actuating?

      Yes 

      • Go To  11.

      No 

      • Remove the Solenoid (1) and check for any debris that may be blocking the oil passages (3) to the Solenoid. If the passages are clogged, clean the passages and replace the MDS Solenoid 1. If the passages are not clogged with debris, replace the MDS Solenoid 4.
      • Refer to STANDARD PROCEDURE and perform the POWERTRAIN VERIFICATION TEST.
  11. OIL PASSAGES RESTRICTED 
    1. Turn the ignition off.
    2. Remove both Solenoids on Bank 2 of the engine block.
    3. Remove the Bank 2 Cylinder Head in accordance with the service information.
    4. Remove the lifters from the left engine bank.
    5. Inspect the oil passages to the Solenoids and from the Solenoids to the lifters.

      Are the passages blocked?

      Yes 

      • Clean the oil passages as necessary. If the entire engine is restricted disassembly of the entire engine block may be necessary.

      No 

      • Replace both sets of lifters if no other possible causes remain.
scientia non olet · About LEMON Manuals