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SUBJECT DATE
SPN 3464 (MCM) (GHG14) August 2014
Additions, Revisions, or Updates
Publication Number / Title Platform Section Title Change
DDC-SVC-MAN-0084GHG14 DD
Platform
SPN 3464/FMI 16 -GHG14 This is an updated section with newdiagnostics including software
level.SPN 3464/FMI 18 -GHG14
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All information subject to change without notice. 3804-14Copyright 2014 DETROIT DIESEL CORPORATION
2 SPN 3464/FMI 16 GHG14
Intake Manifold Pressure Too high (Restricted Mode)
Table 1.SPN 3464/FMI 16
Description Intake Manifold Pressure Over-boost Detected Duringa Regen
Monitored Parameter Intake Manifold Pressure
Typical EnablingConditions
General Enabling Condition: Engine is in normal mode(notregeneration), steady state operation(highway cruiseoperation)
Specific Enabling Conditions: See table below
Engine Parameter Min Max
Engine Speed (rpm) 1130 1810
Engine Torque Nm (lbft) 1100 (811)
Intake Air Throttle Position (%) 5
Engine Coolant Outlet Temperature C (F) 65 (149)
Barometric Pressure (mbar) 755
Ambient Temperature C (F) -8 (18)
Engine Speed Gradient (rpm/s) -10 10
Fuel Mass Gradient ((mg/stroke)/s) -10 10
Monitor Sequence None
Execution Frequency Continuous when enabling conditions met
Typical Duration 15 Seconds
Dash Lamps MIL, CEL
Engine Reaction None
Verification Once engine is at standard operating temperature,drive at highway speed with loaded trailer above 1130rpmcontinuously for 5 minutes.
Check as follows:1. Turn the ignition ON (key ON, engine OFF).2.Check for other codes. Are any other fault codes present?
a. Yes; repair those faults first.b. No; Go to step 3.
3. Check the Motor Control Module (MCM) software level. Comparethe current MCM software level to the server. Is theMCM software atthe latest level?
a. Yes; Go to step 4.b. No; update the MCM software level andperform the verification procedure in the table above. If the faultcode
does not return, release the vehicle. If the fault code returns,Go to step 4.4. Inspect the front grill for air blockage includingwinter fronts, plows, or large hose reels. Is any blockagefound?
a. Yes; repair as needed.b. No; Go to step 5.
5. Inspect hood seals. Are seals missing or damaged?a. Yes;repair as needed.b. No; Go to step 6.
6. Using DiagnosticLink , measure barometric pressure. Isbarometric pressure above 69 kPa (10 psi) and below 110 kPa(16psi)?
a. Yes; Go to step 7.b. No; replace the MCM. Refer to section"Removal of the Motor Control Module". Verify repairs.
2 SPN 3464/FMI 16 GHG14
4 All information subject to change without notice.Copyright2014 DETROIT DIESEL CORPORATION8 04-14
7. Measure the inlet manifold pressure and the barometricpressure. Is the inlet manifold pressure within 10.3 kPa (1.5psi)of barometric pressure?
a. Yes; Go to step 10.b. No; Go to step 8.
8. Disconnect the inlet manifold pressure sensor harnessconnector.9. Inspect the inlet manifold pressure sensor and harnessconnector for signs of damaged, bent, spread, corroded or
unseated (pushed out) pins and signs of moisture in theconnector or wire damage near the connector. Is anydamagepresent?
a. Yes; repair as necessary.b. No; replace the inlet manifoldpressure sensor. Refer to section "Removal of the IntakePressure/Temperature
Sensor".10. Check for engine type. Is engine equipped with anAsymmetrical Turbocharger (AT)?
a. Yes; Go to step 11.b. No; Go to step 19.
11. Turn the ignition OFF.12. Inspect the wastegate actuator andthe plumbing to and from the actuator. Verify wastegate opens andcloses. Is any
binding or damage found?a. Yes; repair as necessary.b. No; Go tostep 13.
13. Inspect the air line connection to the wastegate solenoidfor leaks. Are any air leaks found?a. Yes; repair or replace asnecessary.b. No; Go to step 14.
14. Turn the ignition ON (key ON, engine OFF).15. UsingDiagnosticLink, activate wastegate control from Service RoutinesActivate Outputs Panel. Run slide control up
to 95% - (Click Set). Wastegate will open with air psiavailable. Does wastegate open when commanded?a. Yes; Go to step16.b. No; Go to step 17.
NOTE: Wastegate activates at 0% or 95%. There is no response at50%.
16. Move slide control down to 0. Does wastegate close whencommanded?a. Yes; Go to step 23.b. No; Go to step 17.
17. Disconnect the wastegate solenoid harness connector.18.Inspect the wastegate solenoid and harness connector for signs ofdamaged, bent, spread, corroded or unseated (pushed
out) pins and signs of moisture in the connector or wire damagenear the connector. Is any damage found?a. Yes; repair asnecessary. Verify repair.b. No; replace the wastegate solenoid.
Refer to section "Removal of the DD13 Wastegate Solenoid".Referto section "Removal of the GHG14 DD15 Asymmetrical TurbochargerWastegate Solenoid".Verify repairs. If fault code returns, Go tostep 23.
19. Monitor Exhaust Gas Recirculation (EGR) delta P voltage (pin109) (Turbo-Compound [TC] engine only).20. Is the EGR delta Pvoltage between 0.55 and 0.83 volts (TC engine only)?
a. Yes; Go to step 23.b. No; Go to step 21.
21. Remove the EGR delta P sensor from the mounting pad; leaveelectrical harness connected.22. Is the EGR delta P voltage between0.55 and 0.83 volts? (TC engine only).
a. Yes; Go to step 23.b. No; replace the EGR delta P sensor.Refer to section "Removal of the Delta P Sensor". Verifyrepairs.
23. Turn the ignition OFF.24. Inspect the EGR delivery pipedelta P pressure ports for blockage. Is any blockage found?
a. Yes; clean the venturi pipe and reinstall the sensor. Go tostep 26.b. No; Go to step 25.
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All information subject to change without notice. 5804-14Copyright 2014 DETROIT DIESEL CORPORATION
25. Remove the EGR cooler hot pipe, EGR crossover pipe anddelivery pipe and inspect for excessive build-up orblockage. Is anyexcessive build-up or blockage found?Refer to section "Removal ofthe Exhaust Gas Recirculation Hot Pipe".Refer to section "Removalof the Exhaust Gas Recirculation Crossover Tube".
a. Yes; clean piping and replace EGR cooler. Verify repairs.b.No; Go to step 26.
26. Disconnect the EGR valve actuator pull rod. Inspect the ballsockets on the pull rod for free movement. Do the socketsrotate ormove freely?
a. Yes; Go to step 27.b. No; replace the EGR valve actuator pullrod. Verify repairs.
For the DD13: Refer to section "Removal of the Exhaust GasRecirculation Valve Actuator Pull Rod".For the DD15 and DD16: Referto section "Removal of the Exhaust Gas Recirculation Valve ActuatorPull Rod".
NOTE: Some resistance is normal; however, the actuator shouldnot bind in any particular spot.
27. Physically move the EGR butterfly from stop-to-stop to checkfor full travel (some drag is normal).Verify EGR valvecloses. Doesthe EGR butterfly move stop-to-stop?
a. Yes; reconnect the EGR valve actuator pull rod to the EGRvalve and EGR actuator. Clear codes and retestvehicle. If faultreturns, Go to step 28.
b. No; replace the EGR valve.For the DD13: Refer to section"Removal of the Exhaust Manifold".For the DD15 and DD16: Refer tosection "Removal of the DD15 and DD16 Exhaust Gas RecirculationValve".
28. Disconnect the MCM 120-pin connector.29. Inspect the MCM120-pin connector and the 120-pin harness connector for signs ofcorrosion, spread, unseated (pushed
out) or damaged pins, connector seal for damage (signs of wateror oil intrusion) or signs of wire damage. Is anydamage found?
a. Yes; repair as necessary.b. No; Go to step 30.
30. Install a test MCM and retest with verification cycle. Doesfault code return?a. Yes; Go to step 31.b. No; replace MCM. Referto section "Removal of the Motor Control Module". Verifyrepairs.
31. Install original MCM. Bring to operating temperature of 71C(160F). Road test the vehicle. Drive at highway speedwith loadedtrailer above 1130 rpm continuously for five minutes. Does faultbecome active?
a. Yes; replace the MCM. Refer to section "Removal of the MotorControl Module".b. No; release vehicle.
2 SPN 3464/FMI 16 GHG14
6 All information subject to change without notice.Copyright2014 DETROIT DIESEL CORPORATION8 04-14
3 SPN 3464/FMI 18 - GHG14
Intake Manifold Pressure Too Low (Restricted Mode)
Table 2.SPN 3464/FMI 18 - GHG14
Description Intake Manifold Pressure Lower than Expected Duringa Regen
Monitored Parameter Intake Manifold Pressure
Typical Enabling Conditions General Enabling Condition: Engineis in normal mode(not regeneration), steady stateoperation(highwaycruise operation)
Specific Enabling Conditions: See table below
Engine Parameter Min Max
Engine Speed (rpm) 1130 1810
Engine Torque Nm (lbft) 1100 (811)
Intake Air Throttle Position (%) 5
Engine Coolant OutletTemperature C (F)
65 (149)
Barometric Pressure (mbar) 755
Ambient Temperature C (F) -8 (18)
Engine Speed Gradient (rpm/s) -10 10
Fuel Mass Gradient ((mg/stroke)/s)
-10 10
Execution Frequency Continuous when enabling conditions met
Typical Duration 15 Seconds
Dash Lamps MIL, CEL
Engine Reaction None
Verification Once engine is at standard operating temperature,drive at highway speed with loaded trailer above1130 rpmcontinuously for five minutes.
Check as follows:
1. Turn the ignition ON (key ON, engine OFF).2. Check for othercodes. Are any other fault codes present?
a. Yes; repair those faults first.b. No; Go to step 3.
3. Check the Motor Control Module (MCM) software level. Comparethe current MCM software level to the server. Is theMCM software atthe latest level?
a. Yes; Go to step 4.b. No; update the MCM software level andperform the verification procedure in the table above. If the faultcode
does not return, release the vehicle. If the fault code returns,Go to step 4.4. Inspect the front grill for air blockage includingwinter fronts, plows, or large hose reels. Is any blockagefound?
a. Yes; repair as needed.b. No; Go to step 5.
5. Inspect hood seals. Are seals missing or damaged?a. Yes;repair as needed.b. No; Go to step 6.
6. Inspect the entire air intake system, including the ChargeAir Cooler (CAC), for leaks and/or restrictions. Are any airintakesystem leaks or restrictions found?
a. Yes; repair as necessary. Verify repairs. Retest withverification cycle; once engine is at standardoperatingtemperature, drive at highway speed with loaded trailerabove 1130 rpm continuously for five minutes.
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All information subject to change without notice. 7804-14Copyright 2014 DETROIT DIESEL CORPORATION
b. No; Go to step 7.7. Using DiagnosticLink , measure barometricpressure. Is barometric pressure above 69 kPa (10 psi) and below110 kPa
(16 psi)?a. Yes; Go to step 8.b. No; replace the MCM. Refer tosection "Removal of the Motor Control Module". Verify repairs.
8. Using DiagnosticLink, compare inlet manifold pressure tobarometric pressure. Is the inlet manifold pressure within10.3 kPa(1.5 psi) of barometric pressure?
a. Yes; Go to step 11.b. No; Go to step 9.
9. Disconnect the inlet manifold pressure sensor harnessconnector.10. Inspect the inlet manifold pressure sensor andharness connector for signs of damaged, bent, spread, corrodedor
unseated (pushed out) pins and signs of moisture in theconnector or wire damage near the connector. Is anydamagefound?
a. Yes; repair as necessary. Verify repairs.b. No; replace theinlet manifold pressure sensor. Refer to section "Removal of theIntake Pressure/Temperature
Sensor". Verify repairs.11. Visually inspect exhaust system forleaks or damage, including manifold, gaskets, turbine housing, EGRvalve, and
Aftertreatment Device (ATD). Are any leaks found?a. Yes; repairas necessary. Verify repairs. Retest with verification cycle; onceengine is at standard operating
temperature, drive at highway speed with loaded trailer above1130 rpm continuously for five minutes. If faultcode returns, Go tostep 12.
b. No; Go to step 12.12. Check for engine type. Is engineequipped with an Asymmetrical Turbocharger (AT)?
a. Yes; Go to step 13.b. No; Go to step 21.
13. Turn the ignition OFF.14. Inspect the wastegate actuator andthe plumbing to and from the actuator. Verify wastegate opens andcloses. Is any
binding or damage found?a. Yes; repair as necessary. Verifyrepairs.b. No; Go to step 15.
15. Inspect the air line connection to the wastegate solenoidfor leaks. Are any air leaks found?a. Yes; repair or replace asnecessary. Verify repairs.b. No; Go to step 16.
16. Turn the ignition ON (key ON, engine OFF).17. UsingDiagnosticLink, activate wastegate control from Service RoutinesActivate Outputs Panel. Run slide control up
to 95% - (Click Set). Wastegate will open with air psiavailable. Does wastegate open when commanded?a. Yes; Go to step18.b. No; Go to step 19.
NOTE: Wastegate activates at 0% or 95%. There is no response at50%.
18. Move slide control down to 0. Does wastegate close whencommanded?a. Yes; Go to step 25.b. No; Go to step 19.
19. Disconnect the wastegate solenoid harness connector.20.Inspect the wastegate solenoid and harness connector for signs ofdamaged, bent, spread, corroded or unseated (pushed
out) pins and signs of moisture in the connector or wire damagenear the connector. Is any damage found?a. Yes; repair asnecessary. Verify repairs.b. No; replace the wastegatesolenoid.
Refer to section "Removal of the DD13 Wastegate Solenoid".Referto section "Removal of the GHG14 DD15 Asymmetrical TurbochargerWastegate Solenoid".Verify repairs. If fault code returns, Go tostep 25.
21. Monitor Exhaust Gas Recirculation (EGR) delta P voltage (pin109).22. Is the EGR delta P voltage between 0.55 and 0.83volts?
3 SPN 3464/FMI 18 - GHG14
8 All information subject to change without notice.Copyright2014 DETROIT DIESEL CORPORATION8 04-14
a. Yes; Go to step 25.b. No; Go to step 23.
23. Remove the EGR delta P sensor from the mounting pad; leaveelectrical harness connected.24. Is the EGR delta P voltage between0.55 and 0.83 volts?
a. Yes; Go to step 25.b. No; replace the EGR delta P sensor.Refer to section "Removal of the Delta P Sensor". Verifyrepairs.
25. Turn the ignition OFF.26. Inspect the EGR delivery pipedelta P pressure ports for blockage. Is any blockage found?
a. Yes; clean the venturi pipe and reinstall the sensor. Verifyrepairs.b. No; Go to step 27.
27. Remove the EGR cooler hot pipe, EGR crossover pipe anddelivery pipe and inspect for excessive build-up orblockage. Is anyexcessive build-up or blockage found?Refer to section "Removal ofthe Exhaust Gas Recirculation Hot Pipe".Refer to section "Removalof the Exhaust Gas Recirculation Crossover Tube".
a. Yes; clean piping and replace EGR cooler. Verify repairs.b.No; Go to step 28.
28. Disconnect the EGR valve actuator pull rod. Inspect the ballsockets on the pull rod for free movement. Do the socketsrotate ormove freely?
a. Yes; Go to step 29.b. No; replace the EGR valve actuator pullrod. Verify repairs.
For the DD13: Refer to section "Removal of the Exhaust GasRecirculation Valve Actuator Pull Rod".For the DD15 and DD16: Referto section "Removal of the Exhaust Gas Recirculation Valve ActuatorPull Rod".
NOTE: Some resistance is normal; however, the actuator shouldnot bind in any particular spot.
29. Physically move the EGR butterfly from stop-to-stop to checkfor full travel (some drag is normal).Verify EGR valvemoves. Doesthe EGR butterfly move stop-to-stop?
a. Yes; reconnect the EGR valve actuator pull rod to the EGRvalve and EGR actuator. Clear codes and verifyrepairs. If faultreturns, Go to step 30.
b. No; replace the EGR valve. Verify repairs.For the DD13: Referto section "Removal of the Exhaust Manifold".For the DD15 and DD16:Refer to section "Removal of the DD15 and DD16 Exhaust GasRecirculation Valve".
30. Inspect the turbocharger for damage. Is any damagepresent?a. Yes; repair as necessary. Verify repairs.
If fault returns, for AT engines, Go to step 32.If faultreturns, for Turbo-Compound (TC) engines, Go to step 31.
b. No; for AT engines, Go to step 32.For TC engines, Go to step31.
31. Inspect the axial power turbine for damage. Is any damagepresent?a. Yes; repair as necessary. Clear codes and verifyrepairs. Retest with verification cycle; once engine is atstandard
operating temperature, drive at highway speed with loadedtrailer above 1130 rpm continuously for five minutes.If faultreturns, Go to step 32.
b. No; Go to step 32.32. Turn the ignition ON (key ON, engineOFF).33. Inspect the Diesel Oxidation Catalyst (DOC) pressuresensor tube and elbow and the Diesel Particulate Filter (DPF)
pressure sensor tube and elbow for leaks, kinks, or blockages.Are any leaks, kinks, or blockages found?a. Yes; repair asnecessary. Verify repairs.b. No; Go to step 34.
WARNING: ENGINE EXHAUST
To avoid injury from inhaling engine exhaust, always operate theengine in a well-ventilated area.Engine exhaust is toxic.
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All information subject to change without notice. 9804-14Copyright 2014 DETROIT DIESEL CORPORATION
WARNING: PERSONAL INJURY
To avoid injury before starting and running the engine, ensurethe vehicle is parked on a levelsurface, parking brake is set, andthe wheels are blocked.
WARNING: HOT EXHAUST
During parked regeneration the exhaust gases will be extremelyHOT and could cause a fire ifdirected at combustible materials. Thevehicle must be parked outside.
34. Start engine, allow to warm up so coolant temperature isgreater than 65C (149F).
NOTE: Normal DOC pressure is less than 10 kPa (1.5 psi) for a1-box ATS and 13 kPa (1.9 psi) for a 2-box ATS.
35. Using DiagnosticLink, monitor DOC Inlet Pressure whileperforming a parked regeneration. Refer to section"Performing aParked Regeneration Using DiagnosticLink Standard". Does the DOCInlet Pressure start out high andstay high?
a. Yes; the DOC(s) are plugged. Refer to 13TS-15(http://ddcsn-ddc.freightliner.com/cps/rde/xbcr/ddcsn/13TS15Rev.pdf)for DOC inspection, cleaning, and replacement procedures.
b. No; if DOC Inlet Pressure starts out high and then decreases,the DOCs were plugged and the parked regencleared them. Clear anyfault codes. Verify repairs. If DOC pressure reading is low orfault code returns, Go tostep 36.
36. Turn the ignition OFF.37. Disconnect the MCM 120-pinconnector.38. Inspect the MCM 120-pin connector and the 120-pinharness connector for signs of corrosion, spread, unseated(pushed
out) or damaged pins, connector seal for damage (signs of wateror oil intrusion) or signs of wire damage. Are anysigns of damagefound?
a. Yes; repair as necessary. Verify repairs.b. No; Go to step39.
39. Install a test MCM and retest with verification cycle. Doesfault code return?a. Yes; Go to step 40.b. No; replace MCM. Referto section "Removal of the Motor Control Module". Verifyrepairs.
40. Install original MCM. Bring to operating temperature of 71C(160F). Road test the vehicle. Drive at highway speedwith loadedtrailer above 1130 rpm continuously for five minutes. Does faultbecome active?
a. Yes; replace the MCM. Refer to section "Removal of the MotorControl Module". Verify repairs.b. No; release vehicle.
3 SPN 3464/FMI 18 - GHG14
10 All information subject to change without notice.Copyright2014 DETROIT DIESEL CORPORATION8 04-14
http://ddcsn-ddc.freightliner.com/cps/rde/xbcr/ddcsn/13TS15Rev.pdfhttp://ddcsn-ddc.freightliner.com/cps/rde/xbcr/ddcsn/13TS15Rev.pdfhttp://ddcsn-ddc.freightliner.com/cps/rde/xbcr/ddcsn/13TS15Rev.pdf
1 8 04-142 SPN 3464/FMI 16 GHG143 SPN 3464/FMI 18 - GHG14
