TM 5-3805-293-23-1
0011
Table 2. Engine Troubleshooting with Codes for the 120M Motor Grader - Continued.
CDI FMI CODE
ERROR/EVENT
CORRECTIVE ACTION
N OT E
E172-2 Event Codes High
Air Filter Restriction Code
This code is generated only when the engine has been running for 3
minutes, and restricted air flow has been detected. This code will be
reset when the ignition switch is turned to the OFF position.
System Response:
A warning will appear on instrument
panel, and engine will be derated.
Possible Performance Effect:
Engine will be derated.
1. Using the Messenger (WP 0005),
Event Code E172-2 Present - Go to
verify presence of event code
step 2.
E172-2.
Air Inlet System is Blocked or
2. Inspect air inlet system for dam-
Dirty - Clean and remove blockage
age, blockage, and cleanliness
(WP 0037).
from air inlet system components (WP
0037).
System Response:
E194-2 High Exhaust Tem-
perature Code
Engine ECM derates engine in order
to reduce exhaust gas temperature.
This protects the components of the
exhaust system from damage.
Possible Performance Effect:
1. Using the Messenger (WP 0005),
Event Code E194-2 Present - To to
verify presence of event code
step 2.
E194-2.
2. Verify if engine was operating
Yes - No action required.
under heavy load when code
No - Proceed to step 2.
occurred.
3. Verify if engine was operating at a Yes - No action required.
high altitude when code occurred. No - Proceed to step 3.
4. Inspect turbocharger (WP 0037).
Turbocharger Components
Damaged or Restricted - Replace
turbocharger components (WP 0077)
or clear restriction (WP 0037).
Turbocharger OK - Check for leaks
in the engine oil cooler assembly.
Refer to Engine Oil Cooler Inspection
(WP 0036).
Change 1