File: 297-t05-3236 Page 1 of 5
FAULT CODE 3236 - Aftertreatment 1 SCR Outlet Temperature - Data Valid But
Above Normal Operating Range - Least Severe Level
Associated Procedures
Procedure Title Procedure Number Engine Model Bulletin Number
Injector Refer to Procedure 006-026 ISB5.9 CM2880 B110 4332883
Exhaust System Refer to Procedure 011-056 ISB5.9 CM2880 B110 4332883
Diagnostics
Snap Acceleration Test Refer to Procedure 014-017 ISB5.9 CM2880 B110 4332883
TROUBLESHOOTING SUMMARY
STEPS SPECIFICATIONS SRT CODE
STEP 1: Check the aftertreatment system.
STEP 1A: Check for active fault codes. Fault Codes 3142, 3143, or 3144
active or inactive counts?
STEP 2: Check the diesel exhaust fluid (DEF) for contamination.
STEP 2A: Check the diesel exhaust fluid Diesel exhaust fluid (DEF)
(DEF) for contamination. contaminated?
STEP 3: Check the fuel system.
STEP 3A: Check for an injector misfire. Engine misfire detected?
STEP 4: Check the turbocharger outlet.
STEP 4A: Inspect the turbocharger Engine oil or fuel contamination
exhaust outlet for oil or fuel. found in the turbocharger
exhaust outlet?
STEP 5: Check ECM calibration and clear fault codes.
STEP 5A: Check if an ECM calibration If a calibration update for this
update is available. fault code is available, does the
ECM contain that revision or
higher?
STEP 5B: Disable the fault code. Fault code inactive?
© 2008 Cummins Inc., Box 3005, Columbus, IN 47202-3005 U.S.A. Printed from QuickServe® Online.
All Rights Reserved. Last Modified: 10-Apr-2018
File: 297-t05-3236 Page 2 of 5
TROUBLESHOOTING STEP
STEP 1: Check the aftertreatment system.
STEP 1A: Check for active fault codes.
Condition:
• Turn keyswitch ON.
• Connect INSITE™ electronic service tool.
Action Specification/Repair Next Step
Check for active fault codes. Fault Codes 3142, 3143, or 3144 active or Appropriate
• Use INSITE™ electronic service tool to read inactive counts? fault code
the fault codes. YES troubleshooti
ng tree
Fault Codes 3142, 3143, or 3144 active or 2A
inactive counts?
NO
STEP 2: Check the diesel exhaust fluid (DEF) for contamination.
STEP 2A: Check the diesel exhaust fluid (DEF) for contamination.
Condition:
• Turn keyswitch OFF.
Action Specification/Repair Next Step
Check the diesel exhaust fluid (DEF) for Diesel exhaust fluid (DEF) contaminated? 5A
contamination. YES
• Refer to Procedure 011-056 in the Associated
Procedures Table. Repair:
Drain the diesel exhaust fluid (DEF) tank.
Refer to Procedure 011-056 in the
Associated Procedures Table.
Diesel exhaust fluid (DEF) contaminated? 3A
NO
© 2008 Cummins Inc., Box 3005, Columbus, IN 47202-3005 U.S.A. Printed from QuickServe® Online.
All Rights Reserved. Last Modified: 10-Apr-2018
File: 297-t05-3236 Page 3 of 5
STEP 3: Check the fuel system.
STEP 3A: Check for an injector misfire.
Condition:
• Turn keyswitch OFF.
• Connect INSITE™ electronic service tool.
• Start the engine and run at low idle.
Action Specification/Repair Next Step
Determine if a cylinder misfire is noticed when Engine misfire detected? 5A
the engine is running at low idle. YES
• Use INSITE™ electronic service tool Cylinder
Cutout Test to check for a cylinder misfire. Repair:
Determine the cause of the engine misfire.
Use INSITE™ electronic service tool
Cylinder Cutout Test to isolate a
malfunctioning injector.
• Replace the injector, if necessary. Refer to
Procedure 006-026 in the Associated
Procedures Table.
Inspect the aftertreatment system for
possible damage. Refer to Procedure
014-017 in the Associated Procedures Table.
Engine misfire detected? 4A
NO
STEP 4: Check the turbocharger outlet.
STEP 4A: Inspect the turbocharger exhaust outlet for oil or fuel.
Condition:
• Remove the exhaust plumbing from the turbocharger outlet.
Action Specification/Repair Next Step
Look for signs of moisture in the turbocharger Engine oil or fuel contamination found in the 5A
exhaust outlet. turbocharger exhaust outlet?
• Inspect the turbocharger exhaust outlet for YES
signs of oil or fuel being introduced into the
aftertreatment system from the engine. Repair:
Locate the cause of possible diesel fuel or
engine oil being carried from the engine into
the aftertreatment system.
Inspect the aftertreatment system for
possible damage. Refer to Procedure
014-017 in the Associated Procedures Table.
Engine oil or fuel contamination found in the 5A
turbocharger exhaust outlet?
NO
© 2008 Cummins Inc., Box 3005, Columbus, IN 47202-3005 U.S.A. Printed from QuickServe® Online.
All Rights Reserved. Last Modified: 10-Apr-2018
File: 297-t05-3236 Page 4 of 5
STEP 5: Check ECM calibration and clear fault codes.
STEP 5A: Check if an ECM calibration update is available.
Condition:
• Connect all components.
• Connect INSITE™ electronic service tool.
Action Specification/Repair Next Step
Compare the ECM code and revision number in If a calibration update for this fault code is 5B
the ECM to the calibration revisions listed in the available, does the ECM contain that revision
ECM Calibration Revision History for applicable or higher?
changes related to this fault code. YES
• Use INSITE™ electronic service tool to find
the present ECM code and revision number in
the ECM. The ECM code and revision number If a calibration update for this fault code is 5B
are found in the Calibration Information available, does the ECM contain that revision
section of System ID and Dataplate in or higher?
Features and Parameters. NO
Repair:
If necessary, calibrate the ECM. Refer to
Procedure 019-032 in Section 19.
STEP 5B: Disable the fault code.
Condition:
• Connect all components.
• Connect INSITE™ electronic service tool.
Action Specification/Repair Next Step
Disable and clear the fault code. Fault code inactive? Repair
• Operate the engine within the "Conditions for YES complete
Clearing the Fault Code" found in the
summary section of this troubleshooting
procedure. Fault code inactive? 1A
NO
Repair:
Return to the troubleshooting steps or
contact a Cummins® Authorized Repair
Location if all steps have been completed
and checked again.
© 2008 Cummins Inc., Box 3005, Columbus, IN 47202-3005 U.S.A. Printed from QuickServe® Online.
All Rights Reserved. Last Modified: 10-Apr-2018
File: 297-t05-3236 Page 5 of 5
© 2008 Cummins Inc., Box 3005, Columbus, IN 47202-3005 U.S.A. Printed from QuickServe® Online.
All Rights Reserved. Last Modified: 10-Apr-2018
