03 57-17 1 03 57-17 SUBJECT DATE SPN 625 (CPC) (GHG17) March 2017 Additions, Revisions, or Updates Publication Number / Title Platform Section Title Change DDC-SVC-MAN-0191 GHG17 DD Platform SPN 625/FMI 9 - GHG17 The entire diagnostic procedure has been updated. Graphics and wiring schematics have been added. DiagnosticLink users: Please update the troubleshooting guides in DiagnosticLink with this newest version. To update the tool troubleshooting guide, open DiagnosticLink and from the Help Troubleshooting Guides menu, select the appropriate troubleshooting manual, then click Update. All information subject to change without notice. 3 03 57-17 Copyright 2017 DETROIT DIESEL CORPORATION
2 SPN 625/FMI 9 GHG17 2 SPN 625/FMI 9 GHG17 ACM PT-CAN DM1 Message Not Received or has Stopped Arriving Table 1. Description Monitored Parameter Typical Enabling Conditions Monitor Sequence Execution Frequency Typical Duration Dash Lamps Engine Reaction Verification SPN 625/FMI 9 This Fault Code Sets when the Common Powertrain Controller (CPC) Stops Receiving Messages from the Aftertreatment Control Module (ACM) ACM Controller Area Network (CAN) Communication Always Enabled None Always Enabled Two Seconds MIL is Solid, CEL and AWL Flash 30 Seconds Shutdown Turn the Ignition OFF, Wait Five Minutes, then Turn the Ignition ON 4 All information subject to change without notice. Copyright 2017 DETROIT DIESEL CORPORATION 03 57-17
03 57-17 Possible causes: Over/under voltage supply to the module Fault set during a reprogram event Loss of ground to the ACM Loss of power to the ACM Loss of ignition switch power to the ACM Open in the CAN communication circuits Check as follows: 1. Connect DiagnosticLink. 2. Check for multiple fault codes. Are fault codes SPN 168/FMI Any present in any of the modules? a. Yes; diagnose the other fault codes. b. No; Go to step 3. 3. Has the Aftertreatment Control Module (ACM), Motor Control Module (MCM), or Common Powertrain Controller (CPC) been recently programmed? a. Yes; clear the fault codes and Go to step 4. b. No; Go to step 5. 4. Turn the ignition OFF, wait five minutes, and turn the ignition ON. Does SPN 625/FMI 9 return? a. Yes; Go to step 5. b. No; the fault code was set during the reprogramming event. No further diagnostics or repairs are needed. 5. Turn the ignition OFF. 6. Disconnect and inspect the ACM 21-pin electrical connector, harness side. Is there any corrosion present? a. Yes; replace the ACM and the 21-pin electrical connector, harness side. b. No; Go to step 7. All information subject to change without notice. 5 03 57-17 Copyright 2017 DETROIT DIESEL CORPORATION
2 SPN 625/FMI 9 GHG17 7. Are any of the pins or the connector damaged? a. Yes; Go to step 8. b. No; Go to step 9. 8. Inspect the ACM 21-pin electrical connector, component side. Are any of the pins or the connector damaged? a. Yes; replace the ACM and repair the 21-pin electrical connector, harness side. b. No; repair the ACM 21-pin electrical connector. 9. Using the appropriate flex probe, check pins 7, 8, 9, 10, 11, 13, 14, 15, 16, 17, 18, and 20 in the ACM 21-pin electrical connector, harness side. Are any of the pins spread? a. Yes; replace the spread pins. b. No; Go to step 10. 10. Measure the resistance between 13, 14, 15, 16, and 17 of the ACM 21-pin connector, harness side, and ground. Is resistance less than five ohms for each pin? a. Yes; go to step 11. b. No; repair the circuit between pins 13, 14, 15, 16, 17 and the circuit splice. 11. Measure the battery voltage directly at the batteries. Record the results. 12. Turn the ignition ON (key ON, engine OFF). 13. Measure the voltage on pins 7, 8, 9, 10, and 11 of the ACM 21-pin connector, harness side, and ground. Is the voltage measurement on pins 7, 8, 9, 10, and 11 within one volt of the battery voltage? 6 All information subject to change without notice. Copyright 2017 DETROIT DIESEL CORPORATION 03 57-17
03 57-17 a. Yes; Go to step 14. b. No; repair the circuits in question. 14. Measure the voltage between pin 18 of the ACM 21-pin electrical connector, harness side and ground. Is the voltage within one volt of the battery voltage? a. Yes; Go to step 15. All information subject to change without notice. 7 03 57-17 Copyright 2017 DETROIT DIESEL CORPORATION
2 SPN 625/FMI 9 GHG17 b. No; repair the ignition power circuit between pin 18 of the ACM 21-pin electrical connector, harness side, and fuse A in the Powernet Distribution Box (PNDB). 15. Turn the ignition OFF. 16. Measure resistance between pin 10 and pin 20 on the ACM connector, component side. Is the resistance between 115 and 125 ohms? a. Yes; Go to step 17. b. No; replace the ACM. Refer to section "Removal of the 1-BOX Aftertreatment Control Module" Refer to section "Removal of the Two-BOX (2V2) Aftertreatment Control Module" 17. Measure resistance between pin 10 and pin 20 on the ACM connector, harness side. Is the resistance between 115 and 125 ohms? 8 All information subject to change without notice. Copyright 2017 DETROIT DIESEL CORPORATION 03 57-17
03 57-17 a. Yes; replace the ACM. Refer to section "Removal of the 1-BOX Aftertreatment Control Module" Refer to section "Removal of the Two-BOX (2V2) Aftertreatment Control Module" b. No; Go to step 18. 18. Disconnect and inspect the 18-pin star point electrical connector, harness side. Is there any corrosion present? a. Yes; replace the star point assembly and repair the 18-pin electrical connector, harness side. b. No; Go to step 19. 19. Are pins 7 and/or 9, or the connector damaged? a. Yes; replace the pins. b. No; Go to step 20. 20. Using the appropriate flex probe, check pins 3, 5, 6, 8, 10, 11, 12, 14, 15, 16, 18, and 20. Are any of the pins spread? a. Yes; replace the spread pin(s). b. No; Go to step 21. 21. Measure the resistance between pin 10 of the ACM 21-pin electrical connector, harness side, and pin 9 of the 18-pin star point electrical connector, harness side. Is the resistance greater than five ohms? All information subject to change without notice. 9 03 57-17 Copyright 2017 DETROIT DIESEL CORPORATION
2 SPN 625/FMI 9 GHG17 a. Yes; repair the circuit between pin 10 of the ACM 21-pin electrical connector, harness side, and pin 9 of the 18-pin star point electrical connector, harness side. b. No; repair the circuit between pin 20 of the ACM 21-pin electrical connector, harness side, and pin 7 of the 18- pin star point electrical connector, harness side. 10 All information subject to change without notice. Copyright 2017 DETROIT DIESEL CORPORATION 03 57-17