808-14

Service Bulletin Details

Public Details for: 808-14

808-14 fmi 1, 18: selective catalyst reduction nox conversion very low


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8 08-14
1
8 08-14
SUBJECT
DATE
SPN 4364 (ACM) (EPA10)
August 2014
Additions, Revisions, or Updates
Publication Number / Title
Platform
DDC-SVC-MAN-0084
DD Platform
Section Title
SPN 4364/FMI 1 - EPA10
SPN 4364/FMI 18 - EPA10
All information subject to change without notice.
8 08-14
Copyright © 2014 DETROIT DIESEL CORPORATION
Change
The diagnostic procedure has been updated.
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2 SPN 4364/FMI 1 - EPA10
2
SPN 4364/FMI 1 - EPA10
Selective Catalyst Reduction NOx Conversion Very Low
Table 1.
SPN 4364/FMI 1
Description
This fault code sets when the Aftertreatment Control Module (ACM)
detects that the NOx conversion is lower than a calibrated threshold
Monitored Parameter
Selective Catalyst Reduction (SCR) Inlet NOx sensor, SCR outlet
NOx sensor
Typical Enabling Conditions
Diesel Exhaust Fluid (DEF) dosing enabled, 1000 - 1500 rpm, 15 100% load, SCR inlet temperature sensor less than 650°C (1200°F),
ambient temperature greater than 0°C (32°F), coolant temperature
greater than 70°C (158°F), non-regeneration conditions present
Monitor Sequence
None
Execution Frequency
Continuous when enabling conditions met
Typical Duration
30 Minutes
Dash Lamps
MIL
Engine Reaction
Derate 25%
Verification
Parked Regeneration
1. Connect DiagnosticLink ®.
2. Turn the ignition ON (key ON, engine OFF).
3. Was another emission component-related fault code repaired prior to this step?
a. Yes; perform a parked regeneration and recheck for the fault code. If the fault code returns, Go to step 4.
b. No; Go to step 4.
4. Check for other fault codes. Are there any air management system (ITV, IMP, IAT, turbocharger etc.) fault codes
present?
a. Yes; diagnose the other fault codes first.
b. No; Go to step 5.
5. Are there any Exhaust Gas Recirculation (EGR) system fault codes present?
a. Yes; diagnose the other fault codes first.
b. No; Go to step 6.
6. Are there any other NOx sensor fault codes present?
a. Yes; diagnose the other fault codes first.
b. No; Go to step 7.
7. Are there any fault codes for the DEF doser, DEF pump, or DEF air valve present?
a. Yes; diagnose the other fault codes first.
b. No; Go to step 8.
8. Turn the ignition OFF.
9. Using a refractometer from the DEF Test Kit W060589001900, measure the DEF percentage. Refer to section
"Checking Diesel Exhaust Fluid Quality". Is DEF percentage between 28% and 36%?
a. Yes; Go to step 10.
b. No; flush the DEF system. Refer to section "Flushing of the Diesel Exhaust Fluid System". Verify repair.
10. Turn the ignition ON (key ON, engine OFF).
11. Compare the DEF pressure sensor reading to the barometric pressure sensor reading. Are the readings within 4.3 psi of
each other?
a. Yes; Go to step 12.
b. No; replace the DEF pressure sensor. Refer to section "Removal of the Diesel Exhaust Fluid Pressure Sensor".
Verify repair.
4
All information subject to change without notice.
Copyright © 2014 DETROIT DIESEL CORPORATION 8 08-14
8 08-14
12. Perform the DEF quantity service routine. Refer to section "Diesel Exhaust Fluid Quantity Test - EPA10". Does the
DEF quantity test complete successfully?
a. Yes; Go to step 13.
b. No; flush the DEF metering unit. Verify repair.
WARNING: ENGINE EXHAUST
To avoid injury from inhaling engine exhaust, always operate the engine in a well-ventilated area.
Engine exhaust is toxic.
WARNING: HOT EXHAUST
During parked regeneration the exhaust gases will be extremely HOT and could cause a fire if
directed at combustible materials. The vehicle must be parked outside.
WARNING: PERSONAL INJURY
To avoid injury before starting and running the engine, ensure the vehicle is parked on a level
surface, parking brake is set, and the wheels are blocked.
13. Start the engine and perform a parked regeneration.
14. Shut the engine OFF.
NOTE: SPN 3361/FMI 5 will set when the DEF dosing valve electrical connector is disconnected. The fault code
can be cleared using DiagnosticLink after the DEF dosing valve electrical connector is reconnected.
15. Disconnect the DEF dosing valve electrical connector.
WARNING: ENGINE EXHAUST
To avoid injury from inhaling engine exhaust, always operate the engine in a well-ventilated area.
Engine exhaust is toxic.
WARNING: HOT EXHAUST
During parked regeneration the exhaust gases will be extremely HOT and could cause a fire if
directed at combustible materials. The vehicle must be parked outside.
WARNING: PERSONAL INJURY
To avoid injury before starting and running the engine, ensure the vehicle is parked on a level
surface, parking brake is set, and the wheels are blocked.
16. Start the engine.
17. Run the EPA10 Perform Performance Check - Low Temperature ATD procedure. Refer to section "EPA10 Perform
Performance Check - Low Temperature ATD". Are the NOx inlet sensor and the NOx outlet sensor readings within 50
ppm/15% of each other?
a. Yes; Go to step 18.
b. No; reconnect the DEF dosing valve electrical connector and replace the NOx sensor that is out of specification.
Verify repair.
18. Reconnect the DEF dosing valve electrical connector.
19. Perform a parked regeneration while monitoring the NOx efficiency. Is the NOx efficiency above 70%?
All information subject to change without notice.
8 08-14
Copyright © 2014 DETROIT DIESEL CORPORATION
5
2 SPN 4364/FMI 1 - EPA10
a. Yes; this fault was likely caused by the DEF build-up in the exhaust which was cleared by the parked
regeneration procedures. Release the vehicle.
b. No; Use DiagnosticLink to perform the DOC face plug routine to clear the DEF build-up in the exhaust.
6
All information subject to change without notice.
Copyright © 2014 DETROIT DIESEL CORPORATION 8 08-14
8 08-14
3
SPN 4364/FMI 18 - EPA10
Selective Catalyst Reduction NOx Conversion Low
Table 2.
SPN 4364/FMI 18
Description
This fault code sets when the Aftertreatment Control Module (ACM)
detects that the NOx conversion is lower than a calibrated threshold
Monitored Parameter
Selective Catalyst Reduction (SCR) Inlet NOx sensor, SCR outlet
NOx sensor
Typical Enabling Conditions
Diesel Exhaust Fluid (DEF) dosing enabled, 1000 - 1500 rpm, 15 100% load, SCR inlet temperature sensor less than 650°C (1200°F),
ambient temperature greater than 0°C (32°F), coolant temperature
greater than 70°C (158°F), non-regeneration conditions present
Monitor Sequence
None
Execution Frequency
Continuous when enabling conditions met
Typical Duration
30 Minutes
Dash Lamps
MIL
Engine Reaction
Derate 25%
Verification
Parked Regeneration
1. Connect DiagnosticLink ®.
2. Turn the ignition ON (key ON, engine OFF).
3. Was another emission component-related fault code repaired prior to this step?
a. Yes; perform a parked regeneration and recheck for the fault code. If the fault code returns, Go to step 4.
b. No; Go to step 4.
4. Check for other fault codes. Are there any air management system (ITV, IMP, IAT, turbocharger etc.) fault codes
present?
a. Yes; diagnose the other fault codes first.
b. No; Go to step 5.
5. Are there any Exhaust Gas Recirculation (EGR) system fault codes present?
a. Yes; diagnose the other fault codes first.
b. No; Go to step 6.
6. Are there any other NOx sensor fault codes present?
a. Yes; diagnose the other fault codes first.
b. No; Go to step 7.
7. Are there any fault codes for the DEF doser, DEF pump, or DEF air valve present?
a. Yes; diagnose the other fault codes first.
b. No; Go to step 8.
8. Turn the ignition OFF.
9. Using a refractometer from the DEF Test Kit W060589001900, measure the DEF percentage. Refer to section
"Checking Diesel Exhaust Fluid Quality". Is DEF percentage between 28% and 36%?
a. Yes; Go to step 10.
b. No; flush the DEF system. Refer to section "Flushing of the Diesel Exhaust Fluid System". Verify repair.
10. Turn the ignition ON (key ON, engine OFF).
11. Compare the DEF pressure sensor reading to the barometric pressure sensor reading. Are the readings within 4.3 psi of
each other?
a. Yes; Go to step 12.
b. No; replace the DEF pressure sensor. Refer to section "Removal of the Diesel Exhaust Fluid Pressure Sensor".
Verify repair.
All information subject to change without notice.
8 08-14
Copyright © 2014 DETROIT DIESEL CORPORATION
7
3 SPN 4364/FMI 18 - EPA10
12. Perform the DEF quantity service routine. Refer to section "Diesel Exhaust Fluid Quantity Test - EPA10". Does the
DEF quantity test complete successfully?
a. Yes; Go to step 13.
b. No; flush the DEF metering unit. Verify repair.
WARNING: ENGINE EXHAUST
To avoid injury from inhaling engine exhaust, always operate the engine in a well-ventilated area.
Engine exhaust is toxic.
WARNING: HOT EXHAUST
During parked regeneration the exhaust gases will be extremely HOT and could cause a fire if
directed at combustible materials. The vehicle must be parked outside.
WARNING: PERSONAL INJURY
To avoid injury before starting and running the engine, ensure the vehicle is parked on a level
surface, parking brake is set, and the wheels are blocked.
13. Start the engine and perform a parked regeneration.
14. Shut the engine OFF.
NOTE: SPN 3361/FMI 5 will set when the DEF dosing valve electrical connector is disconnected. The fault code
can be cleared using DiagnosticLink after the DEF dosing valve electrical connector is reconnected.
15. Disconnect the DEF dosing valve electrical connector.
WARNING: ENGINE EXHAUST
To avoid injury from inhaling engine exhaust, always operate the engine in a well-ventilated area.
Engine exhaust is toxic.
WARNING: HOT EXHAUST
During parked regeneration the exhaust gases will be extremely HOT and could cause a fire if
directed at combustible materials. The vehicle must be parked outside.
WARNING: PERSONAL INJURY
To avoid injury before starting and running the engine, ensure the vehicle is parked on a level
surface, parking brake is set, and the wheels are blocked.
16. Start the engine.
17. Run the EPA10 Perform Performance Check - Low Temperature ATD procedure. Refer to section "EPA10 Perform
Performance Check - Low Temperature ATD". Are the NOx inlet sensor and the NOx outlet sensor readings within 50
ppm/15% of each other?
a. Yes; Go to step 18.
b. No; reconnect the DEF dosing valve electrical connector and replace the NOx sensor that is out of specification.
Verify repair.
18. Reconnect the DEF dosing valve electrical connector.
19. Perform a parked regeneration while monitoring the NOx efficiency. Is the NOx efficiency above 70%?
8
All information subject to change without notice.
Copyright © 2014 DETROIT DIESEL CORPORATION 8 08-14
8 08-14
a. Yes; this fault was likely caused by the DEF build-up in the exhaust which was cleared by the parked
regeneration procedures. Release the vehicle.
b. No; Use DiagnosticLink to perform the DOC face plug routine to clear the DEF build-up in the exhaust.
All information subject to change without notice.
8 08-14
Copyright © 2014 DETROIT DIESEL CORPORATION
9

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