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SUBJECT
DATE
SPN 3711/FMI 31 - EPA10
April 2012
Additions, Revisions, or Updates Publication Number / Title DDC-SVC-MAN-0084
Platform
Section Title
Change
EPA10 DD Platform
SPN 3711/FMI 31 EPA10
Additions to procedure to resolve fault code.
All information subject to change without notice.
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2 SPN 3711/FMI 31 - EPA10
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SPN 3711/FMI 31 - EPA10
This diagnostic is typically High Idle Regeneration (HIR) (aborted) – Low Exhaust Temperature. The fault indicates that the 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 DDDL/DDRS 7.04 SP5 or higher. 2. Check fault codes; are SPN 3242/FMI 8 or SPN 3242/FMI 20 active or previously active? a. Yes; troubleshoot these codes first. b. No; Go to step 3. WARNING: ENGINE EXHAUST (i)(eov34) To avoid injury from inhaling engine exhaust, always operate the engine in a well-ventilated area. Engine exhaust is toxic.
WARNING: PERSONAL INJURY (eov84) To avoid injury before starting and running the engine, ensure the vehicle is parked on a level surface, parking brake is set, and the wheels are blocked. 3. Start the engine. 4. 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? a. Yes; replace the DOC inlet temperature sensor and perform an HIR. b. No; Go to step 5. 5. Using DDDL/DDRS, perform an Intake Throttle Service Routine. Is the commanded position achieved? a. Yes; Go to step 6. b. No; replace the Intake Throttle Valve (ITV). 6. Inspect the exhaust system for leaks. a. If a leak is found, repair as necessary. b. If no leaks are found, Go to step 7. 7. Pressurize the intake tract and inspect for leaks. a. If a leak is found, repair as necessary. b. If no leaks are found, Go to step 8. WARNING: HOT EXHAUST (eng38) During parked regeneration the exhaust gases will be extremely HOT and could cause a fire if directed at combustible materials. The vehicle must be parked outside. 8. 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)]? a. 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. b. Yes; Go to step 9. 9. View the Jake Brake® -1 (PWM 13). Is the MCM2 commanding Jake Brake 1 on? a. Yes; Go to step 10. b. 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. 10. Using DDRS/DDDL during the regen, view AS087 Actual Fuel Mass. Is the fuel mass above 100 mg/st? 4
All information subject to change without notice.
Copyright © 2012 DETROIT DIESEL CORPORATION
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4 94-12 a. Yes; send in the log file to the Detroit™ Customer Support Center at
[email protected]. Call 800-445-1980 for further analysis and instruction. b. No; Go to step 11. 11. Install a test MCM2 using the extension harness and perform a regen. Is the fuel mass above 100 mg/st? a. Yes; replace the MCM2. b. No; Go to step 12. WARNING: PERSONAL INJURY (eng18) To avoid injury, never remove any engine component while the engine is running.
12. 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" . a. If the rocker arm does NOT state "TOP FRONT" then remove and inspect it for correct installation and part. b. If the rocker arm does state "TOP FRONT", Go to step 13. 13. Using DDDL/DDRS, Service Routines, Cylinder Cut-Out, cut out cylinders one, two and three. On the Jake Brake solenoid there a button to push called the Jake Brake Override. Push and hold the Jake Brake override button. Does the engine quit running? a. 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. b. No; Go to step 14. 14. 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? a. Yes; replace the solenoid and assemble the engine to perform a regen. b. No; Go to step 15. 15. 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? a. Yes; replace the solenoid. Go to step 16. b. No; replace the cam frame housing. 16. Push on the Jake Brake override button again. Do the Jake Brake pistons activate for cylinders one, two and three? a. Yes; assemble the engine and try a regen. WARNING: EYE INJURY (cit24) To avoid injury from flying debris when using compressed air, wear adequate eye protection (face shield or safety goggles) and do not exceed 276 kPa (40 psi) air pressure. b. 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.
All information subject to change without notice.
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