Engine
Electrical
System
Page 8-22
Replacement Procedures
Electrical
System
DODGE
Turbo Diesel
Thermistor - Check
Remove the electrical connector
from
the thermistor. Prepare
to
time
the Preheat
cycle
by watching the WAIT to
START
light.
Turn the ignition key to the ON position, but do not start the
engine.
IIIMS
DIESEL , ^
x 1 X
^
.
BRAKE
®
(D
• I
WAIT
TO
START
-
4
ITI.OW
©
The WAIT to
START
light
will
come on and the heater solenoids
should
CLICK
on.
Note:
There should be no voltage at the
KSB
valve if the intake
manifold temperature
is
less
than 15°C [59°F].
20
Seconds
"CLICK"
M*-m
JWATERIN
RJELI
(
BRAKE
<B
0 [
-—[w*rr
TO
START)
J
The WAIT to
START
light
should stay on (Preheat Cycle On) for
20
seconds.
After
20
seconds,
the WAIT to START
light
should
go off and the heater
solenoids
should
CLICK
off.
After
20
seconds
the WAiT to START
light
should start flashing.
This
is
an indication
that
the thermistor circuit is open (because
it is unplugged).
The KSB valve should have voltage at the valve terminal if the
intake manifold has heated to 15°C [59°F] or above.
Turn the key to the off position. Plug the wiring connector back
onto the thermistor.
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