Ram Trucks 2012 Chassis Cab - Diesel Supplement - Manual (Page 41)

NOTE: If multiple pre-heat cycles are used before
starting, additional engine run time may be required to
maintain battery state of charge at a satisfactory level.
1. If the engine stalls after the initial start, the ignition
must be turned to the OFF position for at least five
seconds and then to the ON position to recycle the
manifold heaters.
NOTE: Excessive white smoke and poor engine perfor-
mance will result if manifold heaters are not recycled.
2. Heat generated by the manifold heaters dissipates
rapidly in a cold engine. If more than two minutes pass
between the time the “Wait To Start Light” turns off and
the engine is started, recycle the manifold heaters by
turning the ignition switch to the OFF position for at least
five seconds and then back ON.
3. If the vehicle is driven and vehicle speed exceeds
19 mph (31 km/h) before the manifold heater post-heat
(after start) cycle is complete, the manifold heaters will
shut off.
4. If the engine is started before the “Wait To Start Light”
turns off, the preheat cycle will turn off.
5. If the engine is cranked for more than 10 seconds, the
post-heat cycle will turn off.
NOTE:
• Engine idle speed will automatically increase to 1,000
RPM and engage the Variable Geometry Turbocharger
at low coolant temperatures to improve engine warm-
up.
4
STARTING AND OPERATING 39