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 2.
  No
  - Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT CONDITION - 6.7L .
CHECK FOR THE (K417) DEF SUPPLY PUMP ASSEMBLY SUPPLY CIRCUIT SHORTED TO ANOTHER CIRCUIT

Fig 1: Checking For DEF Supply Pump Assembly Supply Circuit For A Short
Courtesy of CHRYSLER GROUP, LLC
1. Turn the ignition off.
2. Disconnect the DEF Supply Pump Assembly harness connector.
3. Disconnect the DEF Dosing Control Unit C1 harness connector.
4. Measure the resistance between and the (K417) DEF Supply Pump Assembly Supply circuit and all other circuits at the DEF Dosing Control Module C1 harness connector.
  Is the resistance above 10k Ohms between the (K417) DEF Supply Pump Assembly Supply circuit and all other circuits?
  
  Yes
  - Go To 3.
  No
  - Repair the (K417) DEF Supply Pump Assembly Supply circuit for a short to the circuit that measured below 10k Ohms.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
CHECK FOR THE (K418) DEF SUPPLY PUMP ASSEMBLY RETURN CIRCUIT SHORTED TO ANOTHER CIRCUIT

Fig 2: Checking For DEF Supply Pump Assembly Return Circuit For A Short
Courtesy of CHRYSLER GROUP, LLC
1. Measure the resistance between and the (K418) DEF Supply Pump Assembly Return circuit and all other circuits at the DEF Dosing Control Unit C1 harness connector.
  Is the resistance above 10k Ohms between the (K418) DEF Supply Pump Assembly Return circuit and all other circuits?
  
  Yes
  - Go To 4.
  No
  - Repair the (K418) DEF Supply Pump Assembly Return circuit for a short to the circuit that measured below 10k Ohms.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
CHECK FOR THE (K419) DEF SUPPLY PUMP ASSEMBLY SIGNAL CIRCUIT SHORTED TO ANOTHER CIRCUIT

Fig 3: Checking DEF Supply Pump Assembly Signal Circuit For A Short To Another Circuit
Courtesy of CHRYSLER GROUP, LLC
1. Measure the resistance between and the (K419) DEF Supply Pump Assembly Signal circuit and all other circuits at the DEF Dosing Control Unit C1 harness connector.
  Is the resistance above 10k Ohms between the (K419) DEF Supply Pump Assembly Signal circuit and all other circuits?
  
  Yes
  - Go To 5.
  No
  - Repair the (K419) DEF Supply Pump Assembly Signal circuit for a short to the circuit that measured below 10k Ohms.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
CHECK THE DEF DOSING CONTROL UNIT
1. Reconnect the DEF Dosing Control Unit C1 harness connector. Leave the DEF Supply Pump Assembly harness connector disconnected.
2. Turn the ignition on.
3. With a scan tool, View DTCs.
  Did DTC P208A become active and DTC P208D change to stored with the DEF Supply Pump Assembly harness connector disconnected?
  
  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
  - 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 .