Cummins ISX CM870 Common Approach Control System Official Diagnostic Manual
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This is the COMPLETE Official Diagnostic Manual Manual for the Cummins Control System.
This manual contains detailed diagnostic information, service and repair information, technical specifications, service codes, observable symptoms for John Deere tractors.
This PDF file is Bookmarked and SEARCHABLE to make what you need easy to find.
Models And Serials :
All Years & Serials Coverd
CONTENTS :
DOCUMENT CONTENTS: …………………………………2
Table of Contents: ……………………………………………3
DATALOGGING USING AVAILABLE ENGINEERING TOOLS (CALTERM and NGET) …..7
TROUBLESHOOTING AND DIAGNOSTICS PARAMETER GUIDE……………….10
2002 CM870 CONTROL SYSTEM……………………….13
Critical Parameters List:……………………………………13
1. Mission Data Critical Parameters List ……………………13
A/D Sensors: ……………………………………………………14
2. Ambient Air Pressure / Compressor Inlet Pressure ……………………….14
3. Compressor Inlet Temperature / Ambient Air Temperature………….14
4. Exhaust Pressure Sensor ……………………………………………………………………. 14
5. EGR Orifice Temperature (EGR Return Temperature) ……………………..14
6. EGR Valve Position Sensor…………………………………………………………………….14
7. EGR Delta Pressure Sensor……………………………………………………………………14
8. Charge Pressure Sensor / Boost Pressure ………………………………………….15
9. Charge Temperature Sensor / Intake Manifold Temperature………….15
10. Turbocharger VG Actuator …………………………………………………………………15
11. Turbocharger Speed Processing ……………………………………………………… 15
12. Coolant Temperature Sensor……………………………………………………………….15
13. Coolant Level Sensor ……………………………………………………………………………15
14. Oil Temperature Sensor ……………………………………………………………………….16
15. Oil Pressure Sensor ……………………………………………………………………………….16
HPI-TP Fuel Systems A/D Sensors:……………………………….16
16. Fuel Rail Pressure Sensor………………………………………………………16
17. Fuel Temperature Sensor………………………………………………………16
18. EPS (Engine Position / Engine Speed) Sensors ………………..16
Virtual Sensors:……………………………………………………………17
19. EGR Fraction Estimation………………………………………………………. 17
20. Charge Flow Estimation ………………………………………………………..17
21. Exhaust Temperature Estimation …………………………………………17
22. Exhaust Pressure Estimation …………………………………………………17
23. Compressor Outlet Temperature Estimation ……………………..18
24. Compressor Inlet Density Estimation …………………………………..18
25. Delta Pressure Estimation ………………………………………………………18
26. EGR Delta Pressure Autozero …………………………………………………18
27. Ambient Parameters Estimation……………………………………………..19
28. Saturation Temperature Estimation………………………………………..19
29. IMT Prediction / IMT Lead-Lag Compensation ……………………19
30. EGR Return Temperature Lead-Lag Compensation …………….19
31. Charge Temperature Estimation ……………………………………………..20
32. Charge Pressure Estimation…………………………………………………….. 20
33. Turbo Speed Estimation…………………………………………………………….20
Emission Features: ………………………………………………….21
34. Torque Manager (TQM) ………………………………………………….21
35. Torque Parameter Determination (TQP)……………………….21
36. Net Torque Estimation ……………………………………………………22
37. Pumping Torque Estimation ………………………………………….22
38. Combustion Manager (CBM)………………………………………….22
39. Combustion Parameter Determination (CBP) …………….22
40. Combustion Reference (CBR) ………………………………………. 23
41. Compensate For Off-Nominal Combustion Conditions (CBO)… 25
42. Combustion Limit Management (CBL) ………………………..25
43. Charge Manager (CHM) …………………………………………………26
44. Charge Parameter Determination (CHP)………………………26
45. Charge Limit Management (CHL)………………………………….26
46. Determine Charge System Errors (CSE) ……………………… 26
47. Emissions Manager (EMM) …………………………………………….26
48. Emission Reference (EMR) ……………………………………………. 27
49. Compensate For Off-Nominal Emission Conditions (EMO)… 27
50. Condensation Protection AECD…………………………………….. 28
51. Air Handling System Protection AECD …………………………..28
52. Extreme Ambient Overheat AECD………………………………….. 28
53. White Smoke / Misfire AECD ……………………………………………28
54. Extended Idle / PTO AECD……………………………………………….. 28
55. General Engine Protection AECD………………………………………29
56. Engine Starting / Warm-Up AECD…………………………………….29
57. Charge System Engine Protection ………………………………….. 29
58. EGR System Monitor (CHH)………………………………………………..29
59. EGR Valve Position Command …………………………………………..30
60. EGR Valve Position Autozero ……………………………………………. 30
61. VG Turbocharger Duty Cycle Command ………………………….30
62. VG Air Shutoff Valve Controls …………………………………………… 30
Performance Diagnostics: ………………………………………….31
63. Charge Flow Derates [Charge Limit Manager (CHL)] ……31
64. Oxygen / Fuel Control (OFC) Fuel Limit…………………………….31
65. Exhaust Temperature (Texh) Fuel Limit …………………………… 31
66. Chi Determination…………………………………………………………………31
67. Altitude Performance …………………………………………………………..32
68. EGR On Conditions ………………………………………………………………32
69. EGR Off Conditions ……………………………………………………………….32
70. EGR Valve Controller………………………………………………………………32
71. VGT Pneumatic Controller ………………………………………………….. 32
72. EGR Motor Diagnostics…………………………………………………………..33
73. EGR Delta P Sensor Diagnostics …………………………………………..33
74. Torque Manager Derates ……………………………………………………..33
75. EGR Valve and VGT Behavior ………………………………………………..34
76. Engine Brake Performance ……………………………………………………34
77. Clutch Engagement Performance…………………………………………34
78. Engine Lug Up / Lug Down …………………………………………………..34
79. Torque Response …………………………………………………………………….35
80. Coupled Controller Performance During Gear Shifts ………..35
81. Coolant and IMT Advance Control…………………………………………35
82. PTO Response…………………………………………………………………………… 35
83. Snap Throttle Response (HSG/LSG Stationary) ……………………36
84. Engine Start-Up………………………………………………………………………….36
85. Low Idle Stability, Stationary…………………………………………………….36
86. PTO Pump-Off……………………………………………………………………………..36
87. Throttle Characterization……………………………………………….. 37
88. Snap Throttle Response (HSG, Bobtail) ………………………. 37
89. Throttle Control / Stability, Bobtail…………………………………37
90. Idle In Gear, Bobtail ………………………………………………………….37
91. Gear Ratio Validation ………………………………………………………..37
92. Cruise Control Base Functionality……………………………………38
93. Road Speed Governor Base Functionality …………………….38
94. Cruise Control Auto Resume…………………………………………….38
95. Cruise Control with Engine Brakes …………………………………38
96. Cruise Control Overshoot …………………………………………………38
97. Road Speed Governor Overshoot……………………………………..39
98. Reverse ESP / Take-Off ESP…………………………………………………39
99. High Idle Stability, Loaded Trailer……………………………………..39
100. Throttle Control / Stability, Loaded Trailer…………………….39
101. Idle In Gear, Loaded Trailer ……………………………………………. 39
102. Sensor Characterization ………………………………………………….. 40
103. Surge Characterization…………………………………………………….. 41
104. OFC and Texh Fuel Limits …………………………………………………41
105. Dyno Performance Monitor………………………………………………42
Application Features: ………………………………………………….43
106. NDOT Governor…………………………………………………………………..43
107. All Speed Governor (ASG) …………………………………………………43
108. High Idle Governor (HSG) ……………………………………………….. 43
109. Low Idle Governor (LSG) …………………………………………………….43
110. Throttle Governor (Min/Max)……………………………………………..43
111. Power Take-Off Governor (PTO)…………………………………………44
112. Road Speed Governor (RSG) ………………………………………………44
113. Cruise Control Governor (CC) …………………………………………….44
114. SOI Timing Control………………………………………………………………..44
115. SOI Timing Control – SOI Advance ………………………………….. 44
116. Engine Start-Up / Cranking …………………………………………………45
117. Engine Brake Manager………………………………………………………….45
118. Engine Fan Control ……………………………………………………………… 45
119. Alpha Determination …………………………………………………………… 45
120. Noise Control – Speed Derates …………………………………………. 45
121. Smart Torque (ST Rating) ……………………………………………………. 46
122. Load Based Speed Controls (LBSC)…………………………………… 46
123. CORS Centinel………………………………………………………………………. 48
124. Automated Transmissions …………………………………………………. 48
125. Powertrain Controls ……………………………………………………………. 48
126. Powertrain Protection …………………………………………………………. 49
127. Limp Home Mode …………………………………………………………………49
128. Out Of Gear Protection …………………………………………………………49
129. Gear Down Protection…………………………………………………………. 49
130. Starter Lockout …………………………………………………………………….. 49
131. Remote Throttle Control ……………………………………………………..50
132. Remote PTO Control…………………………………………………………….50
133. Idle Shutdown……………………………………………………………………… 50
134. Turboconveyor …………………………………………………………………….. 50
135. Ether Start Injection …………………………………………………… 50
Engineering Features: ……………………………………….51
136. User Overrides ……………………………………………………… 51
137. Torque To Fuel Conversion …………………………………..51
138. Keyon Pressure Check Diagnostics………………………51
139. General Engine Protection (EPF)…………………………..51
140. In-Range Diagnostics……………………………………………..54
141. ECM Parameters………………………………………………………54
HPI-TP Fuel System: ……………………………………………………….55
142. Fuel Systems Interface (FSI)…………………………………..55
143. Engine Speed Processing (EPS) ……………………………55
144. Fuel Pressure Compensation (PCC)…………………….. 55
145. Fuel Temperature Compensation (FTC/TTC) ………55
146. Boost Pressure Compensation (BPC)……………………55
147. Solid Fuel Height Determination (SFH)………………..56
148. Estimated Valve Delay (EVD) ……………………………….. 56
149. Flow-To-Time Conversion (FTT) ……………………………56
150. Cylinder Cut-Out Diagnostics (CTS) …………………….56
151. Cylinder Balancing Diagnostics (CBD) ………………….57
152. Fuel Pressure Diagnostics (FPD) ……………………………57
153. Fuel Shut Off (FSO) Controls …………………………………57
154. Fuel System Fault Derate Handler (FDH)………………57
155. CBD / ESP Based Unintended Fueling Diagnostics (CUFD)……58
Legacy Information…………………………………………………………59
156. Hard Starting / Startup and Overshoot…………….. 59
157. Cold Starting ……………………………………………………………59
158. Clutch Engagement / Idle Overshoot …………………59
159. Throttle Control – Min / Max (Automotive Governor)……………..59
160. Throttle Control – All Speed (VS) Governor ………………60
161. Cruise Control / Road Speed / Geardown Governor Behavior………60
162. Cruise Control With Engine Brakes…………………..60
163. Cruise Control With AutoResume…………………… 61
164. Engine Braking …………………………………………………….61
165. Low Power – Road Speed Governor…………………61
166. Low Power – Geardown Protection ………………….61
167. Low Power – Boost Response Test …………………..62
168. Throttle Characterization / Idle Validation Switches …………………62
169. Low Idle Stability / Rough Idle …………………………62
170. PTO Response / Stability……………………………………63
171. No Load Friction / Light Load Throttle Control …. 63
172. Turbo Surge Conditions …………………………………………. 63
173. ESP Performance (Hill Climbing) …………………………….63
174. VSS Anti-Tampering…………………………………………………. 64
175. Acceleration Noise Control …………………………………….64
176. Cold Temperature Stumble / IMT SOI Advance Control (White Smoke)……….64
177. Road Speed Governor / Cruise Control Hiccup / Miss ……………64
178. High Speed Governor Stability ………………65
179. Stumble During Rapid Accel …………………. 65
180. Ambient Air Pressure Sensor – Poor Engine Performance….65
181. Stationary Test – Brake Activation Delay…………… 65
182. Fan Drive Activation……………………………………………… 65
183. ECM Trip Information / Fuel Economy Accuracy ………66
184. Datalink Torque Calculations ……………66
185. Integrated Centinel (CORS)……………….66
186. Starter Lockout …………………………………..66
187. Fan Control …………………………………………66
188. Anti-Theft ………………………………………….. 66
189. Cab Switchable Governor ………………..66
190. Driver Reward ………………………………….. 67
191. FSSC: Cylinder Cut-Out……………………..67
192. Powertrain Protection ……………………..68
193. Smart Road Speed Governor …………68
194. J1939 Devices / Eaton Autoshift ….. 68
195. Highway Cruise Strategy Data Collection……….68
196. Duty Cycle Logging of Route …………………………. 69
CM870 ENGINEERING STATES…………………………………70
CM870 FAULT CODE LIST…………………………………………84
CM870 CONTROL SYSTEM DIAGRAMS…………………….90
CUSTOMER / DRIVER SURVEY………………………………….105
NOTES …………………………………………………………………….113
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