This bulletin applies to 2017 Dodge RAM 3500, 4500/5500 trucks equipped with a 6.7L Cummins diesel engine and built on or after Nov. 23, 2016, and on or before March 17, 2017. The bulletin involves inspection testing and replacement of the fuel injectors.
Customers may experience a MIL on. The technician may find one of the following codes set:
P0201....fuel injector 1 circuit/open
P0202....fuel injector 2 circuit/open
P0203....fuel injector 3 circuit/open
P0204....fuel injector 4 circuit/open
P0205....fuel injector 5 circuit/open
P0206....fuel injector 6 circuit/open
Scan for DTCs. If DTCs other than those listed here, record and repair as needed before continuing.
Note: Do not remove the injector harness or terminal nuts after removing the cylinder head cover.
1. Remove the cylinder head cover.
2. Inspect the area around the injector terminal posts for the presence of any metal shavings around the terminal nuts.
3. Using a multimeter set to the continuity setting, check all six injectors for a short to ground by placing one lead on a metal grounded contact such as the injector mounting clamp or rocker pedestal, and the other lead to each injector terminal post.
4. Remove the terminals of the injector(s) that have a short to ground and check both terminals on the injector(s) for short to ground.
5. If a short is present, replace the shorted fuel injector(s) and fuel injector supply tube(s).
6. Check for any metal shavings that might have been created during re-torqueing the injector terminal nuts. Remove any shavings.
7. Re-confirm with a multimeter that the new injector(s) does not have a short to ground condition.
8. Install the cylinder head cover.
9. Clear all DTCs that may have set in any module.
10. Perform the powertrain verification test. Refer to the service procedures available in DealerCONNECT>TechCONNECT under Service Info>28 – DTC-Based Diagnostics/Module, Powertrain Control (PCM).
Sign up for a FREE subscription to Auto Service Professional magazineSubscribe