Diagnostic Test

WARNING: This page is about a different car, the 2014 RAM 1500. However, it is still accessible from the selected car via links, so may be relevant.

DTC IS ACTIVE
1. Ignition on, engine not running.
2. With the scan tool, erase DTCs in the PCM.
3. Start the engine and test drive the vehicle until the engine reaches operating temperature.
4. With the scan tool, select View DTCs.
  Is the status Active for this DTC?
  
  Yes
  - Go To 2
  No
  - Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT DTC .
CHECK THE (K682) EGR CONTROL (+) CIRCUIT FOR AN OPEN/HIGH RESISTANCE

Fig 1: Checking EGR Control (+) Circuit For An Open Or High Resistance
Courtesy of CHRYSLER GROUP, LLC
1. Turn the ignition off.
2. Disconnect the EGR Valve harness connector.
3. Disconnect the PCM C2 harness connector.
4. Measure the resistance of the (K682) EGR Control (+) circuit between the EGR Valve harness connector and the PCM C2 harness connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Go To 3
  No
  - Repair the (K682) EGR Control (+) circuit for an open or high resistance.
  - Perform the PCM VERIFICATION TEST. Refer to PCM VERIFICATION TEST .
CHECK THE (K684) EGR CONTROL (-) CIRCUIT FOR AN OPEN/HIGH RESISTANCE

Fig 2: Checking EGR Control (-) Circuit For An Open or High Resistance
Courtesy of CHRYSLER GROUP, LLC
1. Measure the resistance of the (K684) EGR Control (-) circuit between the EGR Valve harness connector and the PCM C2 harness connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Go To 4
  No
  - Repair the (K684) EGR Control (-) circuit for an open or high resistance.
  - Perform the PCM VERIFICATION TEST. Refer to PCM VERIFICATION TEST .
CHECK THE EGR VALVE
1. Replace the EGR Valve in accordance with the service information. Refer to VALVE, EXHAUST GAS RECIRCULATION (EGR), REMOVAL .
2. Turn the ignition on.
3. With the scan tool, erase DTCs in the PCM.
4. Start the engine and test drive the vehicle until the engine reaches operating temperature.
5. With the scan tool, select View DTCs.
  Did the DTC return?
  
  Yes
  - Go To 5
  No
  - Test complete.
  - Perform the PCM VERIFICATION TEST. Refer to PCM VERIFICATION TEST .
POWERTRAIN CONTROL MODULE
1. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the EGR Valve 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. Perform any Technical Service Bulletins that may apply.
  Were any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the PCM VERIFICATION TEST. Refer to PCM VERIFICATION TEST .
  No
  - Replace the Powertrain Control Module in accordance with the service information. Refer to MODULE, POWERTRAIN CONTROL, REMOVAL .
  - Perform the PCM VERIFICATION TEST. Refer to PCM VERIFICATION TEST .