Diagnostic Test

WARNING: This page is about a different car, the 2015 RAM 1500. However, it is still accessible from the selected car via links, so may be relevant.

ACTIVE DTC
NOTE:
If DTCs P245A-00, P245C-00, or P245D-00 are present, perform the Diagnostics for those DTCs before continuing with this one.

NOTE:
If there are any DTCs related to Crankcase, perform the Diagnostics on those DTCs before continuing with this one.
1. Turn the ignition on.
2. With the scan tool, erase DTCs.
3. Start the engine and test drive the vehicle.
4. With the scan tool, read DTCs.
  Did the DTC return?
  
  Yes
  - Go To 2
  No
  - Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT DTC .
CHECK THE CRANKCASE VACUUM SUPPLY HOSES FOR CLOGGING, LEAKS, OR OTHER DAMAGE
NOTE:
This DTC is very often set due to damage to one of the Vacuum Supply Hoses.
1. Turn the ignition off.
2. Inspect the Crankcase Vacuum Supply Hose from the Crankcase to the EGR Cooling Bypass Solenoid.
3. Inspect the Vacuum Supply Hose from the EGR Cooling Bypass Solenoid to the EGR Cooling Bypass Actuator.
  Is either Crankcase Vacuum Supply Hose kinked, pinched, leaking, or otherwise damaged?
  
  Yes
  - Replace the damaged Crankcase Vacuum Supply Hose in accordance with the Service Information.
  - Perform the PCM VERIFICATION TEST. Refer to PCM VERIFICATION TEST .
  No
  - Go To 3
CHECK THE CRANKCASE VACUUM SUPPLY
1. Start the engine.
2. Run the engine until it reaches normal operating temperature.
3. Disconnect the Crankcase Vacuum Supply Hose (from the engine) at the EGR Cooling Bypass Solenoid.
4. Connect a vacuum gauge to the disconnected hose.
  Does the vacuum gauge detect any vacuum coming from the engine?
  
  Yes
  - Go To 4
  No
  - Determine the loss of Crankcase vacuum to the EGR Cooling Bypass Solenoid and repair as necessary.
  - Perform the PCM VERIFICATION TEST. Refer to PCM VERIFICATION TEST .
EGR COOLING BYPASS SOLENOID
1. Turn the ignition off.
2. Reconnect the Crankcase Vacuum Supply Hose (from the engine) back to the EGR Cooling Bypass Solenoid.
3. Disconnect the Vacuum Supply Hose at the EGR Cooling Bypass Solenoid. This is the hose routed from the EGR Cooling Bypass Solenoid to the EGR Cooling Bypass Actuator.
4. Start the engine.
5. Connect a vacuum gauge to the EGR Cooling Bypass Solenoid outlet nozzle.
6. Using a jumper wire connected to ground, backprobe the (K670) EGR Bypass Valve Signal circuit.
  Does the vacuum gauge detect any vacuum at the EGR Cooling Bypass Solenoid outlet nozzle?
  
  Yes
  - Go To 5
  No
  - Replace the EGR Cooler Bypass Valve Solenoid in accordance with the Service Information.
  - Perform the PCM VERIFICATION TEST. Refer to PCM VERIFICATION TEST .
EGR COOLER
1. Turn the ignition off.
2. Inspect the EGR Cooler for blockage.
  Was the EGR Cooler free of blockage?
  
  Yes
  - Go To 6
  No
  - Replace the EGR Cooler in accordance with the Service Information.
  - Perform the PCM VERIFICATION TEST. Refer to PCM VERIFICATION TEST .
EGR COOLING BYPASS VALVE ACTUATOR
1. Replace the EGR Cooling Bypass Valve Actuator in accordance with the Service Information.
2. Turn the ignition on.
3. With the scan tool, erase DTCs.
4. Start the engine and test drive the vehicle.
5. With the scan tool, read DTCs.
  Did the DTC return?
  
  Yes
  - Go To 7
  No
  - Test complete.
  - Perform the PCM VERIFICATION TEST. Refer to PCM VERIFICATION TEST .
POWERTRAIN CONTROL MODULE
1. Disconnect all PCM harness connectors.
2. Disconnect all related in-line harness connections (if equipped).
3. Disconnect the related component harness connectors.
4. Inspect harness connectors, component connectors, and all male and female terminals for the following conditions:
  - Proper connector installation.
  - Damaged connector locks.
  - Corrosion.
  - Other signs of water intrusion.
  - Weather seal damage (if equipped).
  - Bent terminals.
  - Overheating due to a poor connection (terminal may be discolored due to excessive current draw).
  - Terminals that have been pushed back into the connector cavity.
  - Perform a terminal drag test on each connector terminal to verify proper terminal tension.
  Repair any conditions that are found.
5. Reconnect all PCM harness connectors. Be certain that all harness connectors are fully seated and the connector locks are fully engaged.
6. Reconnect all in-line harness connectors (if equipped). Be certain that all connectors are fully seated and the connector locks are fully engaged.
7. Reconnect all related component harness connectors. Be certain that all connectors are fully seated and the connector locks are fully engaged.
8. With the scan tool, erase DTCs.
9. Using the recorded Freeze Frame and Environmental Data, along with the When Monitored and Set Conditions above, operate the vehicle in the conditions that set the DTC.
10. With the scan tool, read PCM DTCs.
  Did the DTC return?
  
  Yes
  - Replace the Powertrain Control Module (PCM) in accordance with the Service Information. Refer to MODULE, POWERTRAIN CONTROL, REMOVAL .
  - Perform the PCM VERIFICATION TEST. Refer to PCM VERIFICATION TEST .
  No
  - Test complete.
  - Perform the PCM VERIFICATION TEST. Refer to PCM VERIFICATION TEST .