Diagnostic Test

WARNING: This page is about a different car, the 2011 RAM Pickup. However, it is still accessible from the selected car via links, so may be relevant.

ACTIVE DTC
NOTE:
Diagnose any Misfire DTCs before continuing.
1. Start the engine and allow it to reach normal operating temperature.
  WARNING:
  When the engine is operating, do not stand in direct line with the fan. Do not put your hands near the pulleys, belts or fan. Do not wear loose clothing. Failure to follow these instructions may result in possible serious or fatal injury.
  
  NOTE:
  It may be necessary to test drive the vehicle in order for this DTC to set.
2. With a scan tool, select View DTCs.
  NOTE:
  Diagnose any Deactivation or Oil Pressure DTCs before continuing with this test.
  
  Is the DTC Active at this time?
  
  Yes
  - Go To 2.
  No
  - Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT CONDITION .
MDS SOLENOID NO. 1

Fig 1: Using 12-volt Test Light Connected To (Z908) Ground Circuit To Probe (K451) MDS Solenoid No. 1 Control Circuit
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Gain access to the MDS Solenoid No. 1.
3. Disconnect the MDS Solenoid No. 1 harness connector.
4. Ignition on, engine not running.
5. Turn off all accessories.
6. Using a 12-volt test light connected to the (Z908) Ground circuit, probe the (K451) MDS Solenoid No. 1 Control circuit.
  NOTE:
  The DTC needs to be cleared before actuating the Solenoid, if the DTC is not cleared, the Solenoid may not be allowed to actuate.
7. With a scan tool, actuate the MDS Solenoid 1.
  NOTE:
  The test light should be illuminated and bright proportional to the maximum duty cycle allowed by the scan tool. For example, if the scan tool allows 100% actuation, the brightness should be as bright as a direct connection to the battery. If the scan tool allows a maximum 25% actuation, the brightness should be 25% as bright as a direct connection to the battery.
  
  Does the test light illuminate accordingly during the actuation?
  
  Yes
  - Verify that there is good pin to terminal contact in the Solenoid and the Powertrain Control Module connectors. Replace the MDS Solenoid No. 1 if no problems were found in the connectors.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Go To 3.
(Z908) GROUND CIRCUIT OPEN

Fig 2: Using 12-volt Test Light Connected To 12-volts To Probe (Z908) Ground Circuit In MDS Solenoid No. 1 Harness Connector
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Using a 12-volt test light connected to the 12-volts, probe the (Z908) Ground circuit in the MDS Solenoid No. 1 harness connector.
  Does the test light illuminate brightly?
  
  Yes
  - Go To 4.
  No
  - Repair the open in the (Z908) Ground circuit.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
(K451) MDS SOLENOID NO. 1 CONTROL CIRCUIT SHORTED TO VOLTAGE

Fig 3: Measuring Voltage On (K451) MDS Solenoid No. 1 Control Circuit In MDS Solenoid No. 1 Connector
Courtesy of CHRYSLER LLC
1. Disconnect the C3 PCM harness connector.
2. Ignition on, engine not running.
3. Measure the voltage on the (K451) MDS Solenoid No. 1 Control circuit in the MDS Solenoid No. 1 connector.
  Is there any voltage present
  
  Yes
  - Repair the short to voltage in the (K451) MDS Solenoid No. 1 Control circuit.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Go To 5.
(K451) MDS SOLENOID NO. 1 CONTROL CIRCUIT SHORTED TO GROUND

Fig 4: Measuring Resistance Between Ground And (K451) MDS Solenoid No. 1 Control Circuit In MDS Solenoid No. 1 Harness Connector
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Measure the resistance between ground and the (K451) MDS Solenoid No. 1 Control circuit in the MDS Solenoid No. 1 harness connector.
  Is the resistance below 100 Ohms?
  
  Yes
  - Repair the short to ground in the (K451) MDS Solenoid No. 1 Control circuit.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Go To 6.
(K451) MDS SOLENOID NO. 1 CONTROL CIRCUIT OPEN

Fig 5: Measuring Resistance Of (K451) MDS Solenoid No. 1 Control Circuit From MDS Solenoid No. 1 Harness Connector To Appropriate Terminal Of PCM Pinout Box 8815
Courtesy of CHRYSLER LLC

CAUTION:
Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal to pin connection. Install the PCM Pinout Box (special tool #8815A, Kit, NGC, 38 Position) to perform diagnosis.
1. Measure the resistance of the (K451) MDS Solenoid No. 1 Control circuit from the MDS Solenoid No. 1 harness connector to the appropriate terminal of PCM Pinout Box (special tool #8815A, Kit, NGC, 38 Position).
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Go To 7.
  No
  - Repair the open in the (K451) MDS Solenoid No. 1 Control circuit.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
POWERTRAIN CONTROL MODULE (PCM)
1. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Solenoid and the Powertrain Control Module (PCM).
2. Look for any chafed, pierced, pinched, or partially broken wires.
3. Look for broken, bent, pushed out or corroded terminals. Verify that there is good pin to terminal contact in the Solenoid and the Powertrain Control Module connectors.
4. Refer to any Technical Service Bulletins that may apply.
  Were there any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Replace and program the Powertrain Control Module in accordance with the Service Information.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .