lamp illuminates to warn the driver. The CHECK en-
gine lamp also illuminates on vehicles with a Cum-
mins ISB or ISC/L engine. See
Fig. 11.13.
•
Detroit engines: Engine power is limited with
progressively harsher limits applied. If the fault
is not corrected, the STOP engine light illumi-
nates and a 5 mph (8 km/h) speed limit is ap-
plied after the next engine shutdown, while
parked and idling, or if a fuel refill is detected.
•
Cummins engines: Engine power is limited with
progressively harsher limits applied. If the fault
is not corrected, the STOP engine light illumi-
nates and a 5 mph (8 km/h) speed limit is ap-
plied after the next engine shutdown, or while
parked and idling.
11/08/2010 f611037
B
1/2
ULTRA LOW SULFUR
DIESEL FUEL ONLY
EF
DEF
FE
1/2
ULTRA LOW SULFUR
DIESEL FUEL ONLY
EF
DEF
FE
1/2
ULTRA LOW SULFUR
DIESEL FUEL ONLY
EF
DEF
FE
A C
1
2
A. Green bars—DEF level indicators
B. One bar illuminated amber—DEF very low, refill DEF
C. One bar flashing red—DEF empty, refill DEF
1. Low Fuel Warning Lamp 2. DEF Warning Lamp
Fig. 11.10, Fuel/DEF Gauge
A
B
07/09/2009 f470537
A. DEF Warning Lamp (illuminated)
B. DEF Lightbar (one bar amber)
Fig. 11.11, DEF Level Low Initial Warning
A
B
11/08/2010 f470539a
NOTE: MIL illuminates. CHECK engine lamp illuminates
if Cummins ISB or ISC/L engine. Engine power is lim-
ited.
A. DEF Warning Lamp (flashing)
B. DEF Lightbar (one bar flashing red)
Fig. 11.12, DEF Empty Warning
Emissions and Fuel Efficiency
11.7
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