News Technical Service Bulletins

Issue With Ram Diesel Injector Circuit

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KEYWORDS Mitchell 1 Ram

Location of the powertrain control module (PCM) connector.

This bulletin applies to 2011 RAM 2500/3500/4500/5500 vehicles equipped with a 6.7L Cummins turbo diesel engine built between 3-1-2011 and 3-11-2011. The vehicle may intermittently set diagnostic trouble code (DTC) P0201 (fuel injector 1 circuit open/closed).

1. Open the hood and isolate both battery’s negative cables.

2. Disconnect the powertrain control module (PCM) C1 connector.

3. Remove the connector cover.

4. Remove the red locking tab that locks the terminals into the connector.

5. Locate the wire that operates injector number 1 and terminates in the PCM C1 connector cavity number 26. Injector number 1 circuit is a tan wire with a yellow tracer.

6. Using a wire terminal removal tool, remove wire terminal number 26 from the connector.

7. Remove one-half inch of insulation from the harness end of the wire.

8. Remove all but 2-1/2 inches of wire from the terminal repair kit wire (P/N 68148035AA) and remove one-half inch of insulation from that wire.

9. Place a piece of adhesive-lined heat shrink tubing on the wire from the repair kit.

10. Place the wire strands overlapping each other inside of the splice band P/N 05018527AA).

11. Using a crimping tool, crimp the splice clip and wires together.

12. Solder the connection together using rosin core type solder only.

13. Center the heat shrink tubing over the joint and heat using a heat gun. Heat the joint until the tubing is tightly sealed and sealant comes out of both ends of the tubing.

14. Insert the new terminal into cavity 26 of the PCM connector.

15. Slightly tug on the wire to ensure that the terminal is securely locked into place.

16. Reinstall the red terminal locking tab.

17. Reinstall the PCM cover onto the connector. Ensure that the black and red locking slides are out of the way and the gray lever is in the correct position (about 45-degree angle).

18. Reinstall the connector onto the PCM.

19. Reconnect the battery negative cables and start the engine and monitor the check engine lamp to verify the repair.


PCM connector cover (1) removed from PCM C1 connector (2).


Red terminal lock (1).


Fuel injector one control wire removal (tan wire with yellow tracer).

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