NUMBER: 08 ATS–2 S.M. REF.: Listed in Table 1. ENGINE: ATS DATE: February 2008

SUBJECT: ADDITIONAL ENGINE WAS ADDED

PUBLICATION: DDC-SVC-MAN-0036 (7SE63)

The Aftertreatment System Technician's Guide (DDC-SVC-MAN-0036) was revised to include theDD15 engine.

MANUAL REFERENCESection Change

4.1 REQUIREMENTS Added row to Table 4.1 Maintenance Requirements for the DD15 engine.

5 REGENERATION STRATEGY Updated Figures 5.1 through 5.4 for latest regeneration strategy of the Series 60, MBE 4000,and MBE 900 engines. Added Figures 5.6 and 5.6 for regeneration strategy of the DD15 engine.

5.3 PARKED REGENERATION Added row to Table 5.1 Engine Speeds for the DD15 engine.

6.1 MECHANICALTROUBLESHOOTING

Added DD15 engine symptoms to left column in Table 6.2 Mechanical Troubleshooting viaDash Switch and Table 6.3 Mechanical Troubleshooting via DDDL 7.0.

B.5 DDEC VI ENGINE HARNESSFOR DD15

Added section B.5 to Appendix B for DD15 engine harness.

Table 1 Manual Revisions

4.1 REQUIREMENTS

The interval of recommended maintenance related to ash removal from the Diesel Particulate Filter islisted in Table 2.

NOTE:The DDEC VI engine control system monitors and controls the Aftertreatment Device for collectedash volume. In the event that maintenance is not performed or if maintenance is required due tounforeseen issues, the Amber Warning Lamp (AWL)/Check Engine will be illuminated to notify theuser that service is needed. Refer to section 6.2.3.

Duty cycle (Miles)Engine Model

Severe Short - Haul Long - HaulSeries 60 550,000 550,000 550,000

MBE 900 150,000 150,000 150,000

MBE 4000 300,000 300,000 300,000

DD15 300,000 300,000 300,000

Table 2 Maintenance Requirements

5 REGENERATION STRATEGY

Regeneration of the Aftertreatment Device (ATD) is fundamental for the oxidation of soot. This processhappens during the normal operation cycle of the vehicle; it can occur both passively and actively. Theoperator will see no difference in vehicle performance or vehicle control.

There are three types of regeneration that can occur:

□ Passive Regeneration□ Active Regeneration□ Parked Regeneration

The following describes the regeneration strategy for the Detroit Diesel Aftertreatment System. SeeFigure 1 for Series 60, Figure 2 for Series 60 idle timing, Figure 3 for MBE 4000, Figure 4 for MBE900, Figure 5 for DD15, and Figure 6 for DD15 idle timing.

Figure 1 Regeneration Strategy – Series 60

Figure 2 Idle Timing – Series 60

Figure 3 Regeneration Strategy – MBE 4000

Figure 4 Regeneration Strategy – MBE 900

Figure 5 Regeneration Strategy – DD15

Figure 6 Idle Timing – DD15

5.3 PARKED REGENERATION

When the request is accepted, the DPF Regeneration Lamp will turn on for one second and then go offfor the rest of the parked regeneration. The engine rpm will increase to the required level as listed inTable 3.

Engine Speed (rpm)Series 60 1600

MBE 4000 1300

MBE 900 1200

DD15 1600

Table 3 Engine Speeds

6.1 MECHANICAL TROUBLESHOOTING

Listed in Table 4 are the common symptoms and possible causes to guide you through mechanicaltroubleshooting if regeneration is not functioning properly when initiated via the dash switch.

Symptom Possible Causes Suggestions

Low fuel supply pressureManual test fuel pressure. Check for plugged fuel filtersor aerated fuel.

Fuel Doser Valve partially plugged

Monitor Doser Injection Status and Doser Fuel LinePressure. A high Doser Injection Status during regen,usually greater than 25% and doser fuel line pressureclose to engine fuel pressure indicate plugging.

Intake Manifold Pressure Sensorinaccurate

Compare reading to BARO (key ON, engine OFF).

DOC Outlet Temperature Sensornon-responsive

Compare temperatures before and after engine startup.No temperature change indicates sensor problem.

Electronic Dosing Valveinoperative

Monitor fuel line pressure. Pressure should change whenvalve commanded to open (PWM > 0).

Fuel Cutoff Valve inoperativeMonitor fuel compensation pressure. Pressure shouldchange when valve commanded to 100%.

A parked regeneration initiatesand runs indefinitely. (Intakethrottle on Series 60, DD15, andMBE 4000 or Exhaust Flap onMBE 900 closes, and there is noHEST Lamp after 25 minutes.)

DOC not activeMonitor temperature rise across DOC during regen. Littleor no temperature rise indicates DOC not active.

Low coolant temperatureMonitor coolant temperature. Temperature should begreater than 60°C (140°F).

High DOC Outlet temperatureMonitor DOC outlet temperature. Temperature should begreater than 100°C (212°F) prior to regen.

A parked regeneration initiatesand runs indefinitely. (IntakeThrottle on Series 60, DD15, andMBE 4000 or Exhaust Flap onMBE 900 does NOT close, andthere is no HEST Lamp after 25minutes.)

Engine in smoke control modeMonitor smoke control status during regen. Smoke controlstatus should be 0.

DOC Inlet Temperature Sensornon-responsive

Monitor DOC inlet temperature. No temperature changeafter engine startup indicates sensor problem.

Intake Throttle Valve notfunctioning properly

Listen for the ITV to sweep at key up.

Turbo not functioning properly Perform a turbo hysteresis test.

Low output of Engine Fuel Injector Check for plugged tip. Perform cylinder cut out test.

Exhaust Flap not functioningproperly (MBE 900)

Check solenoid supply voltage and air pressure.

A parked regeneration initiatesbut aborts. (Test ends after 10-15minutes of activation of IntakeThrottle on Series 60, DD15, andMBE 4000 or Exhaust Flap onMBE 900.)

Aerated fuel Check fuel for aeration.

Table 4 Mechanical Troubleshooting via Dash Switch

Listed in Table 5 are the common symptoms and possible causes to guide you through mechanicaltroubleshooting if regeneration is not functioning properly when initiated via DDDL 7.0.

Symptom Possible Causes Suggestions

Low fuel supply pressureManual test fuel pressure. Check for plugged fuel filtersor aerated fuel.

Fuel Doser Valve partially plugged

Monitor Doser Injection Status and Doser Fuel LinePressure. A high Doser Injection Status during regen,usually greater than 25% and Doser Fuel Line Pressureclose to engine fuel pressure indicate plugging.

Intake Manifold Pressure Sensorinaccurate

Compare reading to BARO (key ON, engine OFF).

DOC Outlet Temperature Sensornon-responsive

Compare temperatures before and after engine startup.No temperature change indicates sensor problem.

Electronic Dosing Valveinoperative

Monitor fuel line pressure. Pressure should change whenvalve commanded to open (PWM > 0).

Fuel Cutoff Valve inoperativeMonitor fuel compensation pressure. Pressure shouldchange when valve commanded to 100%.

DOC not activeMonitor temperature rise across DOC during regen. Littleor no temperature rise indicates DOC not active.

DOC Inlet Temperature Sensornon-responsive

Monitor DOC inlet temperature. No temperature changeafter engine startup indicates sensor problem.

Intake Throttle Valve notfunctioning properly

Listen for the ITV to sweep at key up.

Turbo not functioning properly Perform a turbo hysteresis test.

Low output of Engine Fuel Injector Check for plugged tip. Perform cylinder cut out test.

Exhaust Flap not functioningproperly (MBE 900)

Check solenoid supply voltage and air pressure.

A parked regeneration initiatesand runs indefinitely. (Intakethrottle on Series 60, DD15, andMBE 4000 or Exhaust Flap onMBE 900 closes, and there is noHEST Lamp after 25 minutes.)

Aerated fuel Check fuel for aeration.

Low coolant temperatureMonitor coolant temperature. Temperature should begreater than 60°C (140°F).

High DOC Outlet temperatureMonitor DOC outlet temperature. Temperature should begreater than 100°C (212°F) prior to regen.

A parked regeneration initiatesand runs indefinitely. (IntakeThrottle on Series 60, DD15, andMBE 4000 or Exhaust Flap onMBE 900 does NOT close, andthere is no HEST Lamp after25 minutes.)

Engine in smoke control modeMonitor smoke control status during regen. Smoke controlstatus should be 0.

Table 5 Mechanical Troubleshooting via DDDL 7.0

B.5 DDEC VI ENGINE HARNESS FOR DD15

The MCM has a 120–pin connector Engine Harness which is factory installed. It also has a 21–pinconnector and 31–pin connector which are the responsibility of the OEM.

5.1 MCM 120–PIN CONNECTOR FOR DD15 ENGINES

The pinouts for the 120–pin connector for the DD15 engine are listed in Table 6, Table 7, Table 8, andTable 9.

Pin Function Connector1 Quality Control Valve

2 Quality Control Valve

3 NC

4 Spill Amplifier Control Valve (cyl 4) - pin 2

5 NC

6 Spill Amplifier Control Valve (cyl 6) - pin 2

7 Spill Amplifier Control Valve Common (cyl 4, 5, 6) - pin 1

8 Spill Amplifier Control Valve (cyl 5) - pin 2

9 NC

10 Spill Amplifier Control Valve (cyl 2) - pin 2

11 NC

12 Spill Amplifier Control Valve (cyl 3) - pin 2

13 Spill Amplifier Control Valve Common (cyl 1, 2, 3) pin 1

14 Spill Amplifier Control Valve (cyl 1) - pin 2

15 NC

16 Needle Control Valve (cyl 4) - pin 4

17 NC

18 Needle Control Valve (cyl 6) - pin 4

19 Needle Control Valve Common (cyl 4,5,6) - pin 3

20 Needle Control Valve (cyl 5) - pin 4

21 NC

22 Needle Control Valve (cyl 2) - pin 4

23 NC

24 Needle Control Valve (cyl 3) - pin 4

25 Needle Control Valve Common (cyl 1,2,3) - pin 3

26 Needle Control Valve (cyl 1) - pin4

27 NC

28 NC

29 DOC Outlet Temp Sensor

Table 6 MCM Connector – DD15 (1 of 4)

Pin Function Connector30 DPF Outlet Pressure Sensor

31 NC

32 Jake 1

33 Two-speed Fan or Variable Speed Fan

34 NC

35 NC

36 NC

37 NC

38 Ground

39 NC

40 NC

41 Grid Heater

42 NC

43 CKP/TRS (+)

44 NC

45 CMP/SRS (+)

46 NC

47 Fan Speed

48 CMP/SRS (-)

49 NC

50 Sensor Ground

51 Turbo Speed Sensor

52 Sensor Ground

53 NC

54 Sensor Ground

55 Sensor Ground

56 NC

57 Water-in-Fuel-Sensor

58 Sensor Power Supply

59 HDMS Fan Thermal Switch

60 EGR Valve Position

Table 7 MCM Connector – DD15 (2 of 4)

Pin Function Connector61 EGR Valve

62 Power Supply

63 NC

64 Power Supply

65 Doser

66 Jake 2

67 Sensor Ground

68 NC

69 Fuel Cutoff Valve

70 Ground

71 Sensor Supply

72 NC

73 CKP (-)

74 CAN (-)

75 CAN (+)

76 NC

77 Supply Fuel Temperature Sensor

78 Fuel Rail Pressure Sensor

79 Grid Heater

80 Coolant Inlet Temperature Sensor

81 NC

82 Sensor Supply

83 NC

84 Fuel Compensation Pressure Sensor

85 Sensor Supply

86 Turbo Compressor In Temp

87 Intake Manifold Pressure Sensor

88 Sensor Ground

89 DOC Inlet Temp Sensor

90 Intake Air Throttle Valve

Table 8 MCM Connector – DD15 (3 of 4)

Pin Function Connector91 Power Supply

92 Grid Heater

93 Air Seal Pressure Regulator Valve

94 NC

95 Ground

96 NC

97 NC

98 Single-speed Fan or Two-speed Fan

99 NC

100 Intake Air Throttle (+)

101 Intake Air Throttle (-)

102 Sensor Ground

103 Sensor Ground

104 Sensor Ground

105 Engine Oil Pressure Sensor

106 Intake Air Temperature Sensor

107 NC

108 Engine Oil Temperature Sensor

109 EGR Delta Pressure Sensor

110 Coolant Outlet Temp Sensor

111 Fuel Line Pressure Sensor

112 Turbo Compressor Out Temp

113 NC

114 Sensor Ground

115 DPF Outlet Temp Sensor

116 NC

117 Sensor Power Supply

118 DPF Inlet Pressure Sensor

119 Intake Manifold Pressure Sensor

120 NC

Table 9 MCM Connector – DD15 (4 of 4)

ADDITIONAL SERVICE INFORMATION

Additional service information is available in the Detroit Diesel ATS Technician's Guide,DDC-SVC-MAN-0036. The next revision to this manual will include the revised information.

Detroit Diesel®, DDC®, Series 60® and the spinning arrows design are registered trademarks of Detroit Diesel Corporation.© Copyright 2008 Detroit Diesel Corporation. All rights reserved. Printed in U.S.A.