Diagnostic Test

WARNING: This page is about a different car, the 2012 RAM Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

ACTIVE DTC
1. Turn the ignition on, engine not running.
2. With the scan tool, navigate to Systems Tests and actuate the Diesel Exhaust Fluid Doser Pump Override Test.
3. With the scan tool, View DTCs.
  Is the DTC Active?
  
  Yes
  - Go To 3.
  No
  - Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT CONDITION - 6.7L .
CHECK THE DEF SUPPLY PUMP ASSEMBLY
1. Turn the ignition off.
2. Disconnect the DEF Supply Pump Assembly harness connector.
3. Connect a jumper between the (K417) DEF Supply Pump Assembly Supply circuit and the (K419) DEF Supply Pump Assembly Signal circuit at the DEF Supply Pump Assembly harness connector.
  NOTE:
  Be careful not to spread the terminals.
4. Turn the ignition on.
5. With a scan tool, View DTCs.
  Did DTC P208D become active and DTC P208A change to stored with the jumper in place?
  
  Yes
  - Replace the DEF Supply Pump Assembly in accordance with the service information. Refer to ASSEMBLY, DIESEL EXHAUST FLUID PUMP, REMOVAL .
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Go To 3.
CHECK THE (K417) DEF SUPPLY PUMP ASSEMBLY SUPPLY CIRCUIT FOR AN OPEN/HIGH RESISTANCE

Fig 1: Checking DEF Supply Pump Assembly Supply Circuit For An Open Or High Resistance
Courtesy of CHRYSLER GROUP, LLC
1. Turn the ignition off.
2. Disconnect the DEF Dosing Control Unit C1 harness connector.
3. Measure the resistance of the (K417) DEF Supply Pump Assembly Supply circuit between the DEF Supply Pump Assembly harness connector and the DEF Dosing Control Unit C1 harness connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Go To 4.
  No
  - Repair the (K417) DEF Supply Pump Assembly Supply circuit for an open or high resistance.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
CHECK THE (K418) DEF SUPPLY PUMP ASSEMBLY RETURN CIRCUIT FOR AN OPEN/HIGH RESISTANCE

Fig 2: Checking DEF Supply Pump Assembly Return Circuit For An Open Or High Resistance
Courtesy of CHRYSLER GROUP, LLC
1. Measure the resistance of the (K418) DEF Supply Pump Assembly Return circuit between the DEF Supply Pump Assembly harness connector and the DEF Dosing Control Unit C1 harness connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Go To 5.
  No
  - Repair the (K418) DEF Supply Pump Assembly Return circuit for an open or high resistance.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
CHECK THE (K419) DEF SUPPLY PUMP ASSEMBLY SIGNAL CIRCUIT FOR AN OPEN/HIGH RESISTANCE

Fig 3: Checking The DEF Supply Pump Assembly Signal Circuit For An Open Or High Resistance
Courtesy of CHRYSLER GROUP, LLC
1. Measure the resistance of the (K419) DEF Supply Pump Assembly Signal circuit between the DEF Supply Pump Assembly harness connector and the DEF Dosing Control Unit C1 harness connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Replace the DEF Dosing Control Unit in accordance with the service information. Refer to UNIT, DIESEL EXHAUST FLUID DOSING CONTROL, REMOVAL .
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Repair the (K419) DEF Supply Pump Assembly Signal circuit for an open or high resistance.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .