11 54-16 1 11 54-16 SUBJECT SPN 3242 (ACM) (EPA10;GHG14) SPN 3250 (ACM) (EPA10;GHG14) SPN 3251 (ACM) (GHG14) DATE November 2016 Additions, Revisions, or Updates Publication Number / Title Platform Section Title Change SPN 3242/FMI 20 - DDC-SVC-MAN-0084 DD Platform EPA10 - GHG14 SPN 3250/FMI 20 - EPA10 - GHG14 Steps and links added. SPN 3251/FMI 21 - GHG14 Steps 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 11 54-16 Copyright 2017 DETROIT DIESEL CORPORATION
2 SPN 3242/FMI 20 - EPA10 - GHG14 2 SPN 3242/FMI 20 - EPA10 - GHG14 Diesel Oxidation Catalyst Temperature Drift - Inlet High or Outlet Low Table 1. Description Monitored Parameter Typical Enabling Conditions Execution Frequency Typical Duration Dash Lamps Engine Reaction Verification SPN 3242/FMI 20 70 C (126 F) Difference During Non-regeneration Mode Diesel Oxidation Catalyst (DOC) Inlet Temperature vs. DOC Outlet Temperature Coolant Temperature Greater than 60 C (140 F); Regen Not Active In Last Five Minutes Continuous when enabling conditions met One Minute MIL, CEL Regen Inhibit and 10% Engine Derate Low Temperature Regen 1. Check for multiple fault codes. a. Yes; repair those faults first. Refer to section "SPN 3242/FMI 3 - EPA10 - GHG14" Refer to section "SPN 3242/FMI 4 - EPA10 - GHG14" Refer to section "SPN 3242/FMI 8 - EPA10 - GHG14" Refer to section "SPN 3250/FMI 3 - EPA10 - GHG14" Refer to section "SPN 3250/FMI 4 - EPA10 - GHG14" Refer to section "SPN 3250/FMI 8 - EPA10" b. No; Go to step 2. 4 All information subject to change without notice. Copyright 2017 DETROIT DIESEL CORPORATION 11 54-16
11 54-16 2. Start the engine. 3. Run service routine "Perform Performance Check - Low Temp ATD" found under the Diesel Particulate Filter (DPF) System tab. 4. Allow the service routine to run until all aftertreatment temperature sensors stabilize. 5. Is the DOC inlet temperature within 25 C (45 F) of the DPF outlet temperature? a. Yes; Go to step 6. b. No; replace the DOC inlet temperature sensor. Refer to section "Removal of the EPA10 Diesel Oxidation Catalyst Inlet Temperature Sensor" Refer to section "Removal of the GHG14 Diesel Oxidation Catalyst Inlet Temperature Sensor" Verify repair. 6. Is the DOC outlet temperature within 25 C (45 F) of the DPF outlet temperature? a. Yes; clear faults and release vehicle. b. No; replace the DOC outlet temperature sensor. Refer to section "Removal of the EPA10 Diesel Oxidation Catalyst Outlet Temperature Sensor" Refer to section "Removal of the GHG14 Diesel Oxidation Catalyst Outlet Temperature Sensor" Verify repair. All information subject to change without notice. 5 11 54-16 Copyright 2017 DETROIT DIESEL CORPORATION
3 SPN 3250/FMI 20 - EPA10 - GHG14 3 SPN 3250/FMI 20 - EPA10 - GHG14 Diesel Oxidation Catalyst Temperature Drift - Inlet Low or Outlet High Table 2. Description Monitored Parameter Typical Enabling Conditions Execution Frequency Typical Duration Dash Lamps Engine Reaction Verification SPN 3250/FMI 20 70 C (126 F) Difference During Non-regeneration Mode Diesel Oxidation Catalyst (DOC) Inlet Temperature vs. DOC Outlet Temperature Coolant Temperature Greater than 60 C (140 F), Regen not active in last five minutes Continuous When Enabling Conditions Met One Minute CEL, MIL Regen Inhibit and 10% Engine Derate Low Temperature Regen Check as follows: 1. Check for multiple fault codes. a. If SPN 3242/FMI 3/4/8 or SPN3250/FMI 3/4/8 is also present, repair those faults first. Refer to section "SPN 3242/FMI 3 - EPA10 - GHG14". Refer to section "SPN 3242/FMI 4 - EPA10 - GHG14". Refer to section "SPN 3242/FMI 8 - EPA10 - GHG14". Refer to section "SPN 3250/FMI 3 - EPA10 - GHG14". Refer to section "SPN 3250/FMI 4 - EPA10 - GHG14". Refer to section "SPN 3250/FMI 8 - EPA10". b. If the above faults are not present, Go to step 2. 6 All information subject to change without notice. Copyright 2017 DETROIT DIESEL CORPORATION 11 54-16
11 54-16 2. Start the engine. 3. Run service routine "Perform Performance Check - Low Temp ATD" found under the Diesel Particulate Filter (DPF) System tab. 4. Allow the service routine to run until all aftertreatment temperature sensors stabilize. 5. Is the DOC inlet temperature within 25 C (45 F) of the DPF outlet temperature? a. Yes; Go to step 6. b. No; replace the DOC inlet temperature sensor. Refer to section "Removal of the EPA10 Diesel Oxidation Catalyst Inlet Temperature Sensor" Refer to section "Removal of the GHG14 Diesel Oxidation Catalyst Inlet Temperature Sensor" Verify repair. 6. Is the DOC outlet temperature within 25 C (45 F) of the DPF outlet temperature? a. Yes; clear faults and release vehicle. b. No; replace the DOC outlet temperature sensor. Refer to section "Removal of the EPA10 Diesel Oxidation Catalyst Outlet Temperature Sensor" Refer to section "Removal of the GHG14 Diesel Oxidation Catalyst Outlet Temperature Sensor" Verify repair. All information subject to change without notice. 7 11 54-16 Copyright 2017 DETROIT DIESEL CORPORATION
4 SPN 3251/FMI 21 - GHG14 4 SPN 3251/FMI 21 - GHG14 Diesel Oxidation Catalyst Inlet / Outlet Pressure - Not Plausible Table 3. Description Monitored Parameter Typical Enabling Conditions Monitor Sequence Execution Frequency Typical Duration Dash Lamps Engine Reaction Verification SPN 3251/FMI 21 Diesel Oxidation Catalyst (DOC) Inlet / Outlet Pressure Not Plausible Exhaust Pressures Always On None Continuous When Enabling Conditions Met Two Seconds MIL None Parked Regeneration 8 All information subject to change without notice. Copyright 2017 DETROIT DIESEL CORPORATION 11 54-16
11 54-16 1. Visually inspect the entire exhaust system for signs of leaks or damage. Is there any damage found? a. Yes; repair as necessary. Verify repair. b. No; Go to step 2. 2. Connect DiagnosticLink. 3. Turn the ignition ON (key ON, engine OFF). 4. Using the Selective Catalyst Reduction (SCR) voltage service routine, monitor the DOC inlet pressure (pin 87) with the key ON, engine OFF. 5. Is the DOC inlet pressure sensor voltage between 0.44 and 0.56 volts? a. Yes; Go to step 9. b. No; Go to step 6. 6. Disconnect the DOC inlet pressure sensor connector. 7. Inspect the DOC inlet pressure sensor connector for damaged pins, spread pins or corrosion. Is there any damage found? a. Yes; repair as necessary. Verify repairs. b. No; Go to step 8. 8. Measure the voltage from pin 3 of the DOC inlet pressure sensor connector to ground. Is the voltage between 4.5 and 5.5 volts? a. Yes; replace the sensor. Verify repair. Refer to section "Removal of the GHG14 Diesel Oxidation Catalyst Inlet Pressure Sensor". b. No; repair the wire between pin 3 of the DOC inlet pressure sensor connector and pin 117 of the ACM. Verify repair. 9. Using the Selective Catalyst Reduction (SCR) voltage service routine, monitor the Diesel Particulate Filter (DPF) outlet pressure (pin 72) voltages with the key ON, engine OFF. 10. Is the DPF outlet pressure sensor voltage between 0.44 and 0.56 volts? a. Yes; inspect and repair the DOC and DPF pressure sensor tubes and elbows for leaks, kinks, or restrictions. Refer to section "Removal of the GHG14 Diesel Oxidation Catalyst Inlet Pressure Sensor Tube". b. No; Go to step 11. 11. Disconnect the DPF outlet pressure sensor connector. 12. Inspect the DPF outlet pressure sensor connector for damaged pins, spread pins or corrosion. Is there any damage found? All information subject to change without notice. 9 11 54-16 Copyright 2017 DETROIT DIESEL CORPORATION
4 SPN 3251/FMI 21 - GHG14 a. Yes; repair as necessary. Verify repairs. b. No; Go to step 13. 13. Measure the voltage between pin 3 of the DPF outlet pressure sensor connector and ground. Is the voltage between 4.5 and 5.5 volts? a. Yes; replace the sensor. Verify repair. Refer to section "Removal of the GHG14 Diesel Particulate Filter Outlet Pressure Sensor". b. No; repair the wire. Verify repair. 10 All information subject to change without notice. Copyright 2017 DETROIT DIESEL CORPORATION 11 54-16