Check Preheat Cycle - Dodge D250 1990 Service Manual

Rear wheel drive ram truck, diesel supplement
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Air System
Page 11-10
Exhaust System and Intake Manifold
DODGE Turbo Diesel
20
Seconds
"CLICK"
WAIT T O S T A R T !
^ ^ | L O C K ~ 1
Walt 20 seconds.
The solenoids should click off.
The 'Wait to Start" light should begin flashing.
Note: The wait to start light will flash Indicating an open circuit
in the thermistor wiring. Disconnecting the thermistor simulates
this condition.
DM
°
A U T O / L O C K
a D C / A C
a
V O L T S
o
O H M S
a MIL LI AMPS
The multimeter should show voltage at the KSB Valve wire
terminal. This voltage reading is an indication that the
thermistor is sensing a temperature of 15°C [59°C] or above.
Note: No intake manifold postheat will occur while the
thermistor is disconnected.
Turn the Ignition switch to the "OFF" position.
Connect the thermistor wire harness.
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ON
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ON
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ON
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j B R A K E
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ON
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J M I V 1 I M S
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ON
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4 B O D I E S E L .
!—SAL-
L O W
~ ' —* | W A I T T O S T A R T j'
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ON
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FUEL
^ — I
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H
. F S F I R I F i O M Y
A
A N T ,
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0 C K
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/
ON
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(t%f) Check Preheat Cycle
Turn the ignition switch to the "ON" position.
Do not start engine.

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D350 1990W250 1990W350 1990

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