EPA07/10/GHG14 DDEC VI/10 Electronics and Troubleshooting Manual (DDC-SVC-MAN-0084) | 416 SPN 3711 (MCM) (EPA10;GHG14) | 416.1 SPN 3711/FMI 31 – EPA10 – GHG14

The fault indicates that the High Idle Regeneration (HIR) was aborted due to the Diesel Oxidation Catalyst (DOC) inlet temperature not reaching the minimum of 270°C (518°F) to initiate dosing during an HIR. The CEL and MIL lamps will remain ON until the fault is resolved or a successful regeneration is completed.

 

1. Connect DiagnosticLink^® .

 

1. Is the vehicle an EPA10 model?
   1. Yes; Go to step 3.
   1. No; Go to step 4.

 

1. Is the Motor Control Module (MCM) software level 7.5.0.108 with fuel map ZGS 002 (DD15/16) & ZGS 003 (DD13) or higher?
   1. Yes; Go to step 4.
   1. No; update device software and then Go to step 4.

 

1. Check fault codes; are SPN 3242/FMI 8 or SPN 3242/FMI 20 active or previously active?
   1. Yes; troubleshoot these codes first.
   1. No; Go to step 5.

 

1. Start the engine.

 

1. Monitor the Diesel Oxidation Catalyst (DOC) inlet temperature sensor, the DOC outlet temperature sensor. Continue idling for 10 minutes. Is the DOC inlet temperature drifted low?
   1. Yes; replace the DOC inlet temperature sensor and perform an HIR.
   1. No; Go to step 7.

 

1. Using DiagnosticLink, perform an Intake Throttle Service Routine. Is the commanded position achieved?
   1. Yes; Go to step 8.
   1. No; replace the Intake Throttle Valve (ITV).

 

1. Inspect the exhaust system for leaks.
   1. If a leak is found, repair as necessary.
   1. If no leaks are found, Go to step 9.

 

1. Pressurize the intake tract and inspect for leaks.
   1. If a leak is found, repair as necessary.
   1. If no leaks are found, Go to step 10.

 

1. Perform a Parked Regen. Once the ITV closes, view the Inlet Manifold Pressure (IMP) reading. Is the reading less than 23 PSIa (2.59 bar [37.7 psi])?
   1. No; inspect the ITV. Also for DD13 engines, the wastegate is command “on” during a Parked Regen; inspect the wastegate actuator and the plumbing to and from the actuator.
   1. Yes; Go to step 11.

 

1. View the Jake Brake® -1 (PWM 13). Is the MCM commanding Jake Brake 1 on?
   1. Yes; Go to step 12.
   1. No; the oil temperature may be too cold. The oil temperature needs to be above 50ºC (122°F) for the Jake Brakes to turn on.

 

1. Using DiagnosticLink during the regen, view AS087 Actual Fuel Mass. Is the fuel mass above 100 mg/st?
   1. Yes; send in the log file to the Detroit™ Customer Support Center at CSC@daimler.com. Call 800-445-1980 for further analysis and instruction.
   1. No; Go to step 13.

 

1. Install a test MCM using the extension harness and perform a regen. Is the fuel mass above 100 mg/st?
   1. Yes; replace the MCM.
   1. No; Go to step 14.

 

1. Remove the valve cover. Inspect the front top of the exhaust rocker arm shaft. It should state “TOP FRONT”. Refer to section “Checking for Poor Engine Brake Performance” .
   1. If the rocker arm does NOT state “TOP FRONT” then remove and inspect it for correct installation and part.
   1. If the rocker arm does state “TOP FRONT”, Go to step 15.

 

1. Using DiagnosticLink, Service Routines, Cylinder Cut-Out, cut out cylinders one, two, and three. On the Jake Brake solenoid there is a button to push called the Jake Brake Override. Push and hold the Jake Brake override button. Does the engine quit running?
   1. Yes; replace the exhaust rocker arm shaft. The plug in the rocker arm shaft is missing (cannot be seen), causing oil to activate the rear Jake Brakes.
   1. No; Go to step 16.

 

1. When the Jake override button is pushed down, do you see all the Jake Brake rocker arm pistons come out of the Jake Brake rocker arms for cylinders one, two, and three?
   1. Yes; replace the solenoid and assemble the engine to perform a regen.
   1. No; Go to step 17.

 

1. Remove the front (Bank 1) engine brake solenoid from the cam frame. This will require the removal of the front injector harness. Make sure both injector harnesses (front and rear) are unplugged. Crank the engine; is there oil coming out of the port in the cam frame housing?
   1. Yes; replace the solenoid. Go to step 18.
   1. No; replace the cam frame housing.

 

1. Push on the Jake Brake override button again. Do the Jake Brake pistons activate for cylinders one, two and three?
   1. Yes; assemble the engine and try a regen.
   1. No; remove the Jake Brake solenoid and the exhaust rocker arm shaft. Blow compressed shop air through the cam frame to the solenoid gallery, inspecting for a blockage. Remove the rockers for cylinders one, two and three. Blow compressed shop air through the rocker arm inspecting for blockage. If no blockage is found, replace the Jake Brake rockers that did not have the pistons activate.