Winnebago 1987-1989 LeSharo Service Manual page 631

I'
"
SHOOTING GUIDE
POSSIBLE CAUSE REMEDY
No voltage at either brown wire 01 14 pin
Check lor correct power source. blown fuae.
ng harness
broken
red wire,
broken brown wire(s) or
loose connections. Replace. repair, or tighten.
System will not engage If vehicle IS
Poor electncal ground connection at Check light green wire
&
its eyelet terminal.
servo and/or servo bracket.
Tighten
,.se rvo-to-bracket" nul.
Tighten
body"
screws
(this is
part 01
return circuit).
ch Improperly
Adjust switch. Must be "closed" when brake
en".
pedal is released.
r no vacuum.
Check lor pinched or disconnected vacuum
hoses.
See "Electrical Check", and Schematic.
ed wire.
Check lor short(s). Replace luse (5 amp malt.)
y
Replace Control Switch For Control Switch
check, see end 01 "Trouble Shooting". "Con-
trol Switch".
lty. No continuity
Replace Signal Generator.
grey wire.
At regulator. electrical terminals in 14-pin
Bend contacts up slightly with small
ring harness not making
sharp probe. Must be above small plastic
nted circuit board
separators 01 main Wiring harness 14-pin connector body.
et too high.
Turn "low speed switch adj"
counterclock-
"Road Test".
nected.
Check cable connections at servo and at
e.
faulty.
Replace electronic regulator.
ump valve
Ground light green wires to vehicle's
ness not grounded.
chassis.
ve (coil open or
Electrical Check - Unplug connector from
re~uiator and check continuity between term
l'
(pink) and #1 (It. green). If circuit is open. check ground of light green wire at dump valve and connection of pink wire. If connec- tions ok and circuit open. replace dump valve.
Leak Check - Disconnect pink wire from main
wiring harness and apply 12 V. to dump valve wire. Unplug large hose from servo. suck on hose and seal end with tongue. If vacuum can- not be held. replace dump valve.
No clearance at carburetor end of Adjust slack at throttle lever.
Servo faulty.
Replace servo. Servo faulty. Replace Servo.
Electronic regulator faulty.
Replace electronic regulator.
Poor electrical ground connection at Check light green wire
&
its eyelet terminal.
racket.
Tighten
"servo-to-bracket"' nut.
Tighten
body" screws.
(This is part of
ground return circuit.)
.
Replace Controi Switch. For Control Switch
Check. see end of "Trouble Shooting". "Con-
trol Switch".
Disengagement Switch Assembly Adjust switch(s). Must be "OPEN" when
improperly adjusted; switch "CLOSED"
brake pedal is depressed.
depressed.
Servo cable kinked or binding.
Replace servo cable. Replace aervo.
Disengagement Switch faulty
Replace switch assembly. (electrical portion only).
ngages.
\...
Electronic regulator faulty.
Replace electronic regulator.
../
01-9