Diagnostic Test

WARNING: This page is about a different car, the 2013 RAM 3500 HD and 2013 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.

OTHER DTCS
1. Ignition on, engine not running.
2. With the scan tool, read DTCs.
  Are there any other DEF system DTCs active?
  
  Yes
  - Repair all other DEF system DTCs before proceeding with this test procedure.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to STANDARD PROCEDURE .
  No
  - Go To 2
U11C1 ACTIVE
Is DTC U11C1 active?

Yes
- Go To 3
No
- Perform the INTERMITTENT CONDITION - 6.7L diagnostic procedure. Refer to STANDARD PROCEDURE .
CHECK THE J1939 DATALINK CIRCUITS FOR AN OPEN/HIGH RESISTANCE
1. Turn the ignition off.
2. Disconnect the DEF Dosing Control Unit C1 harness connector.
3. Disconnect the PCM C2 harness connector
  NOTE:
  Check connectors - Clean/repair as necessary.
4. Measure the resistance of the (D134) J1939 Datalink (+) circuit between the DEF Dosing Control Unit C1 harness connector and the PCM C2 harness connector.
5. Measure the resistance of the (D135) J1939 Datalink (-) circuit between the DEF Dosing Control Unit C1 harness connector and the PCM C2 harness connector.
  Is the resistance below 5.0 Ohms for both circuits?
  
  Yes
  - Go To 4
  No
  - Repair the J1939 circuit for an open or high resistance.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to STANDARD PROCEDURE .
CHECK THE J1939 DATALINK CIRCUITS FOR A SHORT
1. Measure the resistance between the (D134) J1939 Datalink (+) circuit at the PCM C2 harness connector and all other circuits in the PCM C2 harness connector.
2. Measure the resistance between the (D135) J1939 Datalink (-) circuit at the PCM C2 harness connector and all other circuits in the PCM C2 harness connector.
  NOTE:
  Disregard any resistance between 50 and 70 Ohms between the J1939 (+) and the J1939 Datalink (-) pins.
  
  Is the resistance above 10k Ohms for both circuits?
  
  Yes
  - Go To 5
  No
  - Repair the J1939 circuit for a short circuit.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to STANDARD PROCEDURE .
CHECK THE J1939 DATALINK CIRCUITS FOR A SHORT TO GROUND
1. Measure the resistance between ground and the (D134) J1939 Datalink (+) circuit at the PCM C2 harness connector.
2. Measure the resistance between ground and the (D135) J1939 Datalink (-) circuit at the PCM C2 harness connector.
  Is the resistance above 10k Ohms for both circuits?
  
  Yes
  - Go To 6
  No
  - Repair the J1939 circuit for a short to ground.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to STANDARD PROCEDURE .
DEF DOSING CONTROL UNIT
1. Turn the ignition off.
2. Reconnect the DEF Dosing Control Unit C1 harness connector.
3. Reconnect the PCM C2 harness connector.
4. Ignition on, engine not running.
5. With the scan tool, read DTCs.
  Is DTC P010E active?
  
  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 - 6.7L. Refer to STANDARD PROCEDURE .
  No
  - Replace the Powertrain Control Module in accordance with the service information. Refer to MODULE, POWERTRAIN CONTROL, 6.7L DIESEL [ETK], REMOVAL .
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to STANDARD PROCEDURE .