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Diagnostic Test

WARNING: This page is about a different car, the 2013 RAM 1500. However, it is still accessible from the selected car via links, so may be relevant.
  1. ACTIVE DTC 
    1. Ignition on, engine not running.
    2. With the scan tool, record the related Freeze Fame Data and clear the DTCs in the Powertrain Control Module (PCM).
    3. Start the engine and allow it to reach normal operating temperature. Hold engine speed greater than 1000 RPM for at least one minute. The DTC will not be set unless cam phasing becomes active, which may not occur if speed never leaves idle.
      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 can result possible serious or fatal injury.

    4. With the scan tool, select View DTCs.

      Is the DTC Active or Pending at this time?

      Yes 

      • Go To  2

      No 

  2. CHECK THE (G62) OIL PUMP CONTROL CIRCUIT FOR A SHORT TO VOLTAGE 
    Fig 1: Checking Oil Pump Control Circuit For Short To Voltage
    GC0141897Courtesy of CHRYSLER GROUP, LLC
    1. Turn the ignition off.
    2. Disconnect the Oil Pump Solenoid harness connector.
    3. Disconnect the PCM C2 harness connector.
    4. Turn the ignition on.
    5. Measure the voltage on the (G62) Oil Pump Control circuit at the Oil Pump Solenoid harness connector.

      Is there any voltage present?

      Yes 

      • Repair the (G62) Oil Pump Control circuit for a short to voltage.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .

      No 

      • Go To  3
  3. CHECK THE (G62) OIL PUMP CONTROL CIRCUIT FOR AN OPEN/HIGH RESISTANCE 
    1. Turn the ignition off.
      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 GPEC Diagnostic Adaptor to perform the diagnosis.

    2. Connect the (special tool #10436, Adapter, GPEC Diagnostic).
    3. Measure the resistance of the (G62) Oil Pump Control circuit between the Oil Pump Solenoid harness connector and the GPEC Adaptor.

      Is the resistance below 5.0 Ohms?

      Yes 

      • Go To  4

      No 

      • Repair the (G62) Oil Pump Control circuit for a n open or high resistance.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  4. CHECK THE (G62) OIL PUMP CONTROL CIRCUIT FOR A SHORT TO GROUND 
    Fig 2: Checking Oil Pump Control Circuit For Short To Ground
    GC0141900Courtesy of CHRYSLER GROUP, LLC
    1. Measure the resistance between ground and the (G62) Oil Pump Control circuit at the Oil Pump Solenoid harness connector.

      Is the resistance above 10k Ohms?

      Yes 

      • Go To  5

      No 

      • Repair the (G62) Oil Pump Control circuit for a short to ground.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  5. OIL PUMP SOLENOID 
    Fig 3: Checking Oil Pump Solenoid
    GC0141903Courtesy of CHRYSLER GROUP, LLC
    1. Reconnect the PCM C2 harness connector.
    2. Turn the ignition on.
    3. Using a 12-volt test light connected to ground, probe the (G62) Oil Pump Control circuit at the Oil Pump Solenoid harness connector.
      NOTE:

      The test light should be off unless you have a short to ground, except for a brief period immediately after turning ignition on.

    4. With the scan tool, actuate the Oil Pump Solenoid control to the ON (100%) position.
      NOTE:

      The test light should be illuminated and bright. Compare the brightness to that of a direct connection to the battery.

      Is the test light illuminated and bright during the actuation and was it off when required?

      Yes 

      • Verify that there is good pin to terminal contact in the Oil Pump Solenoid and Powertrain Control Module connectors. If OK, replace the Oil Pump Solenoid in accordance with the service information.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .

      No 

      • Go To  6
  6. CHECK THE (Z903) OIL PUMP SOLENOID GROUND CIRCUIT FOR AN OPEN/HIGH RESISTANCE 
    Fig 4: Checking Oil Pump Solenoid Ground Circuit For An Open Or Excessive Resistance
    GC0141905Courtesy of CHRYSLER GROUP, LLC
    1. Turn the ignition off.
    2. Measure the resistance between ground and the (Z903) Oil Pump Solenoid Ground circuit at the Oil Pump Solenoid harness connector.

      Is the resistance below 5.0 Ohms?

      Yes 

      • Go To  7

      No 

      • Repair the (Z903) Oil Pump solenoid ground control circuit for an open or high resistance.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  7. POWERTRAIN CONTROL MODULE (PCM) 
    1. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the oil pump 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.
    4. Verify that there is good pin to terminal contact in the oil pump solenoid and Powertrain Control Module connectors.
    5. Perform any Technical Service Bulletins that may apply.

      Were any problems found?

      Yes 

      • Repair as necessary.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .

      No 

      • Replace and program the Powertrain Control Module (PCM) in accordance with the service information.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .
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