NHTSA ID Number: 10199618
Manufacturer Communication Number: 0301-16
TSB/Document Date: 2021-08-02
Summary
Updated diagnostic procedures. Correction to the pin call outs.
03 01-16
Copyright © 2016 DETROIT DIESEL CORPORATION
11
6 SPN 625/FMI 4 - EPA10 - GHG14
6
SPN 625/FMI 4 - EPA10 - GHG14
Erratic data or the Controller Area Network Propriety Data Link has Failed Between the Motor Control Module and the
Common Powertrain Controller
Table 5.
SPN 625/FMI 4
Description
Erratic Data on Engine CAN Link
Monitored Parameter
CAN Communication
Typical Enabling Conditions
Always Enabled
Monitor Sequence
None
Execution Frequency
Always Enabled
Typical Duration
Two Seconds
Dash Lamps
MIL, CEL
Engine Reaction
Verification
Engine Idle (One minute)
Check as follows:
NOTE: This diagnostic is typically erratic data or the CAN propriety data link has failed between the MCM and the
CPC.
1. Have the Motor Control Module (MCM) and/or the Common Powertrain Controller (CPC) recently been changed or
reprogrammed?
a. Yes; verify that the correct MCM calibration and/or the correct CPC parameter list has been installed. If the
correct calibration and correct parameter list have been installed, then Go to step 2.
b. No; Go to step 2.
12
All information subject to change without notice.
Copyright © 2016 DETROIT DIESEL CORPORATION 03 01-16
03 01-16
2. Disconnect the MCM 21-pin connector.
3. Turn the ignition ON (key ON, engine OFF).
NOTE: Poor battery grounds can be a possible cause of low battery voltage.
4. Measure the battery voltage at pin 7 on the MCM 21-pin connector. Is the battery voltage less than 10.5 volts?
a. Yes; restore the battery voltage at pins 7, 11, 12, 14, and 15 on the MCM 21-pin connector.
b. No; Go to step 5.
5. Turn ignition OFF; leave the MCM 21-pin connector disconnected.
6. Disconnect the CPC #3 connector.
7. Measure the resistance between pins 19 and 21 of the CPC #3 connector. Is the resistance greater than five ohms?
a. Yes; Go to step 8.
b. No; repair the short circuit in the wires between pins 19 and 21 of the CPC #3 connector and pins 13 and 19 of
the MCM 21-pin connector.
8. Measure the resistance between pin 19 of the CPC #3 connector and ground. Is the resistance greater than five ohms?
a. Yes; Go to step 9.
b. No; repair the short circuit to ground between pin 19 of the CPC #3 connector and ground.
9. Check the resistance between pin 21 of the CPC #3 connector and ground. Is the resistance greater than five ohms?
a. Yes; Go to step 10.
b. No; repair the short circuit to ground between pin 21 of the CPC #3 connector and ground.
10. Measure the resistance between pin 19 of the CPC #3 connector and pin 19 of the MCM 21-pin connector. Is the
resistance greater than five ohms?
a. Yes; repair the open circuit between pin 19 of the CPC #3 connector and pin 19 of the MCM 21-pin connector.
b. No; Go to step 11.
11. Measure the resistance between pin 21 of the CPC #3 connector and pin 13 of the MCM 21-pin connector. Is the
resistance greater than five ohms?
a. Yes; repair the open circuit between pin 21 of the CPC #3 connector and pin 13 of the MCM 21-pin connector.
b. No; replace the CPC. Refer to OEM procedures.
All information subject to change without notice.
03 01-16
Copyright © 2016 DETROIT DIESEL CORPORATION
13
7 SPN 625/FMI 8 - EPA10 - GHG14
7
SPN 625/FMI 8 - EPA10 - GHG14
Motor Control Module, Powertrain Controller Area Network DM1 Message Not Received or has Stopped Arriving
Table 6.
SPN 625/FMI 8
Description
DM1 Message Not Received Or Has Stopped Arriving
Monitored Parameter
CAN Communication
Typical Enabling Conditions
Always Enabled
Monitor Sequence
None
Execution Frequency
Always Enabled
Typical Duration
Two Seconds
Dash Lamps
MIL, CEL
Engine Reaction
None
WARNING: PERSONAL INJURY
Diesel engine exhaust and some of its constituents are known to the State of California to cause
cancer, birth defects, and other reproductive harm.
• Always start and operate an engine in a well ventilated area.
• If operating an engine in an enclosed area, vent the exhaust to the outside.
• Do not modify or tamper with the exhaust system or emission control system.
Check as follows:
1. Are there any battery voltage faults present (SPN 168/FMI any)?
14
All information subject to change without notice.
Copyright © 2016 DETROIT DIESEL CORPORATION 03 01-16
03 01-16
a. Yes; troubleshoot battery voltage faults first.
b. No; Go to step 2.
2. Have the Aftertreatment Control Module (ACM), Motor Control Module (MCM) or Common Powertrain Controller
(CPC) been recently programmed?
a. Yes; clear the fault codes. If faults do not become active, release the vehicle. If faults become active, Go to step
3.
b. No; clear the fault codes. If faults do not become active, release the vehicle. If faults become active, Go to step 3.
3. Turn ignition OFF and wait five minutes before proceeding. Main battery power must be left ON (The five-minute time
frame allows the ACM to go completely offline).
4. Disconnect the MCM 21-pin connector.
5. Measure and record the resistance across pins 13 and 19 of the MCM 21-pin connector. Is the resistance greater than 80
ohms?
a. Yes; Go to step 8.
b. No; Go to step 6.
6. Is the resistance reading from step 5 less than five ohms?
a. Yes; replace the PT-CAN harness.
b. No; Go to step 7.
7. Is the resistance reading from step 5 between 60 plus or minus 20 ohms?
a. Yes; Go to step 18.
b. No; Go to step 8.
8. Disconnect the ACM 21-pin connector.
9. Check ACM internal terminating resistor by measuring and recording the resistance across pins 10 and 20 of the ACM
21-pin connector. Is the resistance 120 plus or minus 10 ohms?
All information subject to change without notice.
03 01-16
Copyright © 2016 DETROIT DIESEL CORPORATION
15
7 SPN 625/FMI 8 - EPA10 - GHG14
a. Yes; Go to step 10.
b. No; replace the ACM.
10. Disconnect the CPC connector #3.
11. Check the CPC internal terminating resistor by measuring and recording the resistance across pins 19 and 21 of the
CPC connector cavity #3. Is the resistance 120 plus or minus 10 ohms?
a. Yes; Go to step 12.
b. No; replace the CPC.
12. Measure and record the resistance between pin 19 of CPC connector #3, and pin 20 of the ACM 21-pin connector. Is
resistance greater than five ohms?
a. Yes; Go to step 13.
b. No; repair the wire between pin 19 of the CPC connector #3, and the pin 20 of the ACM 21-pin connector.
13. Measure and record the resistance between pin 21 of the CPC connector #3, and pin 10 of the ACM 21-pin connector.
Is resistance greater than five ohms?
a. Yes; Go to step 14.
b. No; repair the wire between pin 21 of the CPC connector #3, and pin 10 of the ACM 21-pin connector.
16
All information subject to change without notice.
Copyright © 2016 DETROIT DIESEL CORPORATION 03 01-16
03 01-16
14. Measure and record the resistance between pin 19 of the CPC connector #3, and pin 19 of the MCM 21-pin connector.
Is resistance greater than five ohms?
a. Yes; Go to step 15.
b. No; repair the wire between pin 19 of the CPC connector #3, and pin 19 of the MCM 21-pin connector.
15. Measure and record the resistance between pin 21 of the CPC connector #3, and pin 13 of the MCM 21-pin connector.
Is resistance greater than five ohms?
a. Yes; Go to step 16.
b. No; repair the wire between pin 21 of the CPC connector #3, and pin 13 of the MCM 21-pin connector.
16. Measure and record the resistance between pin 19 of the MCM 21-pin connector and pin 20 of the ACM 21-pin
connector. Is resistance greater than five ohms?
a. Yes; Go to step 17.
b. No; repair the wire between pin 19 of the MCM 21-pin connector and pin 20 of the ACM 21-pin connector.
17. Measure and record the resistance between the pin 13 of the MCM 21-pin connector and pin 10 of the ACM 21-pin
connector. Is resistance greater than five ohms?
a. Yes; replace the MCM. Refer to section "Removal of the Motor Control Module".
b. No; repair the wire between pin 13 of the MCM 21-pin connector and pin 10 of the ACM 21-pin connector.
18. Turn the ignition ON (key ON, engine OFF).
19. Measure the voltage between pins 7, 11, 12, 14, and 15 of the MCM 21-pin connector (ignition/battery voltage) and
ground. Is the voltage less than 11.5 volts?
a. Yes; restore voltage to pins 7, 11, 12, 14, and 15 of the MCM 21-pin connector.
b. No; Go to step 20.
20. Turn the ignition OFF.
21. Measure the resistance between pins 5, 6, 8 and 9 of the MCM 21-pin connector and the negative battery post. Is
resistance greater than five ohms?
a. Yes; restore the battery ground to pins 5, 6, 8 and 9 of the MCM 21-pin connector.
b. No; Go to step 22.
22. Disconnect MCM 120-pin connector and inspect connector for corrosion, or oil, fuel or water intrusion. Is
contamination found?
a. Yes; repair as necessary.
b. No; install a test MCM. If communication is restored (fault inactive), replace the MCM. Refer to section
"Removal of the Motor Control Module".
All information subject to change without notice.
03 01-16
Copyright © 2016 DETROIT DIESEL CORPORATION
17
8 SPN 625/FMI 14 - EPA10 - GHG14
8
SPN 625/FMI 14 - EPA10 - GHG14
Motor Control Module System ID Not Received or Stopped Arriving
Table 7.
SPN 625/FMI 14
Description
MCM Message Not Received Or Has Stopped Arriving
Monitored Parameter
CAN Communication
Typical Enabling Conditions
Always Enabled
Monitor Sequence
None
Execution Frequency
Always Enabled
Typical Duration
Two Seconds
Dash Lamps
MIL, CEL
Engine Reaction
None
Check as follows:
WARNING: PERSONAL INJURY
Diesel engine exhaust and some of its constituents are known to the State of California to cause
cancer, birth defects, and other reproductive harm.
• Always start and operate an engine in a well ventilated area.
• If operating an engine in an enclosed area, vent the exhaust to the outside.
• Do not modify or tamper with the exhaust system or emission control system.
1. Are there any battery voltage faults (SPN 168/FMI ANY)?
18
All information subject to change without notice.
Copyright © 2016 DETROIT DIESEL CORPORATION 03 01-16
03 01-16
a. Yes; troubleshoot battery voltage faults first.
b. No; Go to step 2.
2. Has the Aftertreatment Control Module (ACM), Motor Control Module (MCM) or Common Powertrain Controller
(CPC) been recently programmed?
a. Yes; clear the fault codes. If faults do not become active, release the vehicle; if faults become active, Go to step
3.
b. No, clear the fault codes. If faults do not become active, release the vehicle; if faults become active, Go to step 3.
3. Turn ignition OFF and wait five minutes before proceeding. Main battery power must be left ON (The five minute time
frame allows the ACM to go completely offline).
4. Disconnect the MCM 21-pin connector.
5. Measure and record the resistance across pins 13 and 19 of the MCM 21-pin connector. Is the resistance greater than 80
ohms?
a. Yes; . Go to step 8.
b. No; Go to step 6.
6. Is the resistance reading from step 5 less than six ohms?
a. Yes; replace the PT-CAN harness.
b. No; Go to step 7.
7. Is the resistance reading from step 5 between 60 plus or minus 20 ohms?
a. Yes; Go to step 18.
b. No; Go to step 8.
8. Disconnect the ACM 21-pin connector.
9. Check ACM internal terminating resistor by measuring and recording the resistance across pins 10 and 20 of the ACM
21-pin connector. Is the resistance 120 plus or minus 10 ohms?
All information subject to change without notice.
03 01-16
Copyright © 2016 DETROIT DIESEL CORPORATION
19
8 SPN 625/FMI 14 - EPA10 - GHG14
a. Yes; Go to step 10.
b. No; replace the ACM.
10. Disconnect the CPC connector #3.
11. Check the CPC internal terminating resistor by measuring and recording the resistance across pins 19 and 21 of the
CPC connector cavity #3. Is the resistance 120 plus or minus 10 ohms?
a. Yes; Go to step 12.
b. No; replace the CPC.
12. Measure and record the resistance between pin 19 of the CPC connector #3 and pin 20 of the ACM 21-pin connector. Is
resistance greater than five ohms?
a. Yes; Go to step 13.
b. No; repair the wire between pin 19 of the CPC connector #3 and pin 20 of the ACM 21-pin connector.
13. Measure and record the resistance between pin 21 of the CPC connector #3 and pin 10 of the ACM 21-pin connector. Is
resistance greater than five ohms?
a. Yes; Go to step 14.
b. No; repair the wire between pin 21 of the CPC connector #3 and pin 10 of the ACM 21-pin connector.
20
All information subject to change without notice.
Copyright © 2016 DETROIT DIESEL CORPORATION 03 01-16
03 01-16
14. Measure and record the resistance between pin 19 of the CPC connector #3 and pin 19 of the MCM 21-pin connector.
Is resistance greater than five ohms?
a. Yes; Go to step 15.
b. No; repair the wire between pin 19 of the CPC connector #3 and pin 19 of the MCM 21-pin connector.
15. Measure and record the resistance between pin 21 of the CPC connector #3 and pin 13 of the MCM 21-pin connector.
Is resistance greater than five ohms?
a. Yes; Go to step 16.
b. No; repair the wire between pin 21 of the CPC connector #3 and pin 13 of the MCM 21-pin connector.
16. Measure and record the resistance between pin 19 of the MCM 21-pin connector and pin 20 of the ACM 21-pin
connector. Is resistance greater than five ohms?
a. Yes; Go to step 17.
b. No; repair the wire between pin 19 of the MCM 21-pin connector and pin 20 of the ACM 21-pin connector.
17. Measure and record the resistance between pin 13 of the MCM 21-pin connector and pin 10 of the ACM 21-pin
connector. Is resistance greater than five ohms?
a. Yes; replace the MCM. Refer to section "Removal of the Motor Control Module".
b. No; repair the wire between pin 13 of the MCM 21-pin connector and pin 10 of the ACM 21-pin connector.
18. Turn the ignition ON (key ON, engine OFF).
19. Measure the voltage between pins 7, 11, 12, 14, and 15 of the MCM 21-pin connector (ignition/battery voltage) and
ground. Is the voltage less than 11.5 volts?
a. Yes; restore voltage to pins 7, 11, 12, 14, and 15 of the MCM 21-pin connector.
b. No; Go to step 20.
20. Turn the ignition OFF.
21. Measure the resistance between pins 5, 6, 8 and 9 of the MCM 21-pin connector and the negative battery post. Is
resistance greater than five ohms?
a. Yes; restore the battery ground to pins, 5, 6, 8 and 9 of the MCM 21-pin connector.
b. No; Go to step 22.
22. Disconnect MCM 120-pin connector and inspect connector for corrosion, or oil, fuel or water intrusion. Is
contamination found?
a. Yes; repair as necessary.
b. No; install a test MCM. If communication is restored (fault inactive), replace the MCM. Refer to section
"Removal of the Motor Control Module".
All information subject to change without notice.
03 01-16
Copyright © 2016 DETROIT DIESEL CORPORATION
21
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TSB/Document ID: 0301-16
Replacement Service Bulletin Number:
MFR Communication Date: 2016-03-01
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
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