Dodge ram truck 3500 1996 Service Manual page 463

B R — — VEHICLE SPEED CONTROL SYSTEM 8H - 5
DIAGNOSIS AND TESTING (Continued)
WAiNlMGs m i USE O F m i SPEED C O N T R O L
is N O T RECOMMENDED W H I N MM N O
COfJDfTONS D O NOT PERMIT MAINTAINING
A CONSTANT SPEED, SUCH AS H I A W
TftATOC O R O N mm% THAT A H WINDING,
KY
#
SHOW C O V B K D Oft SUPPERY.
START ENGINE
ACCELERATE VEHICLE
TO DESIRED SPEED
SPUD C O N T R O L
E N G A G E S W H E N
E N G I N E I S S T A R T E D
PUSH ON/CRUISE
BUTTON TO "ON"
POSITION
1
SPEED CONTROL
ENGAGES WITHOUT
PUSHING THE
"SET/DECEL" BUTTON
PUSH AND RELEASE
"SET/DECEL" BUTTON
FAULTY
ELECTRICAL CIRCUIT*
DEFECTIVE SERVO
FAULTY ELECTRICAL CIRCUIT*
DEFECTIVE SERVO
REMOVE FOOT FROM
ACCELERATOR. SPEED
SHOULD BE CONTROLLED
N O S P E E D C O N T R O L
WMm SB/MSB. BUTTON
IS PRESSED AND REUA5ED
FUSE BLOWN
"INSUFFICIENT
VACUUM AT SERVO
SPEED CONTROL
THROTTLE CABLE
DISCONNECTED
IMPROPER STOP LAMP
SWITCH ADJUSTMENT
FAULTY ELECTRICAL
CIRCUIT*
HUNTING SURGE OR
SKID VARIATION
AflOW
?
TORQUE CONVERTER
CLUTCH ROUGHNESS
AMPLIFICATION OF
ENGINE SURGE
T
DEFECTIVE SERVO
t
DEFECTIVE CABLE
DEFECTIVE
POWERTRAIN
CONTROL MODULE
EXCESSIVE SAG
ON H1US
m
M f i A I U i TOWIN©
ENGINE
PERFORMANCE
"INSUFFICIENT
VACUUM AT SERVO
EXCESSIVE LOAD MAY
REQUIRE MANUAL
ASSISTANCE ON HILLS
>SEflN6AFra
ijOOCmTOOIfGH
OftTOOUOW
"INSUFFICIENT
VACUUM AT SERVO
DEFECTIVE SERVO
DEFECTIVE CABLE
" R E F E R T O G R O U P 5 - B R A K E S
F O R V A C U U M P U M P D I A G N O S I S .
DEFECTIVE SERVO
*TEST AMP mswmmms A H
m mmMmmmm wmmm m
DEFECTIVE ENGINE
SPEED SENSOR
J948H-28
DIAGNOSIS CHART 1—DIESEL ENGINE