Page 1457 of 1681
Cruise Control (cont'd)
- How the Circuit Works
The cruise control system uses mechanical and
electrical devices to maintain the car's soeed at a
setting selected by the driver.
System Description
The cruise control unit receives command signals
from the cruise control main switch and the cruise
control SevBesume switch. With the ignition switch
in ON (ll) or START (lll), voltage is provided to the
cruise control main switch. When you push the
switch to on, power is provided to the cruise control
unit and the brake switch.
The cruise control unit receives information about
operating conditions from the brake switch, the
ignition control module (lCM), the vehicle speed
sensor (VSS), and the clutch switch (manual
transmission) or the A,/T gear positton switch
(automatic transmission). The cruise control unit
then sends signals to the cruise conirol actuator
which regulates the throttle position to maintain the
selected speed. The control unit compares the
aclual speed of the car to the selected speed. The
control unit then uses the result of that comoarison
to oDen or close the throttle.
The brake switch releases the system's control of
the throttle at the instant you press on the brakepedal. The switch sends a signal to the control unit
by removing power from the normally closed brake
input (GRY wire), and providing power at the
normally open brake input (GRNMHT wire). The
control unit responds by allowing the throttle to
close. The clutch switch or the A/T gear position
switch sends a "disengage" signal to the control unit
that also allows the throttle to close.
The cruise control system will set and automatically
maintain any speed above 25 mph (40 km/h). To set
it, make sure the main switch is on and the switch
indicator is on. Then, after reaching the desired
speed, press the set switch. This sends a "set"
signal to the cruise control unit which, in turn,
controls the cruise control actuator to maintain the
set soeed.
When you push the SET switch and the cruise
control system is on, the "cruise control" ON
indicator lights up.
34-4
You can cancel the cruise control system by
turning the main switch off. This removes power to
the control unit and erases the set sDeed from
memory. lf the system is disengaged temporarily
by the brake switch, or clutch switch, and the car's
speed is still above 25 mph, press the RESUME
switch: the car will automatically return to the
previously set speed.
For gradual acceleration without pressing the
accelerator pedal, push the RESUME switch and
hold it there. This will send an "acceleration" signal
to the control unit. When you release the switch, the
system will be reprogrammed tor the new speed. To
slow the car down, push the SET switch in and hold
it there. This sends a "deceleration" signal to the
control unit, causing the car to coast. When the
desired speed is reached, release the SET switch.
This reprograms the system for the new speed.
Reter to the Service Manual (Section 23, Electrical)
for specific tests or troubleshooting procedures.
Page 1458 of 1681
Automatic Transmission Controls
- '98-'99 Models
-I,;;;
EACK Ue
-l'::-
FUSE 52NOFN, STOP204
UNDER-HOODFUSE/RELAYBOXSee PowerDistribution,page 10-9.
isToP s
v)Brake switch input
8c217
aa+
I Y C216ll PHaTa 24wHrcFN iSee Power ! See power
Distribution. I Distributron,page 1G8. I OuO" tO-S.
""t o:"
I(Cruise Contror 2) I C431
r rN-.t BRAKE
I | swrrcH
L q-: j ;,,?i,i?'Y,i *i,i:5"
2Ycqst "u'o '*
(Cfuise Control3t
IGFNvHT
Il'+^..6'f- - - --_- -
:f irlliin"r" r s-r zy
I
GFN wHr I 'r'oro'o
cnrwnr I t
i 8:i^i?i,i":"tZ I Cqtg Cruise C-ontrol
] fii1f,,",.,..,,
Y
SeelgnitionSystem
l---83ivBU)Battery back-up
812',
I(nE)Engine speed input (FPM)
Shitt tock Shift controlsotenoid Look_up coo.trol solenoid \VehiCle Cifcuit A,/C on valve control valve controlspeed-input control ilp"ui' ,-'H...,.,,,,..r \"&. ,j5? ,X%""r' ,"lru' rsHAr 'lgl' ,l:"u) IL _ iq - _ _ _ _ E?_ _ _ _ g'_ _ _ _ 5i _ _ _E: _ _ _ _ _ !t- _ _ _:&: _ _ _ - _tu
f
"0"
-",:: [-;"f
-
"- "T-. -T----=T--_5
"-'
*"
I p*t ^", 3rl**.,*""
-"'
il
-'-..
|
-.
|
"* *^
|
| $:'"::""
33n:Ji.'*' .
|___{ r*,," ,
f----,{ r*:,,
.ri-,-:-
ssc"ds"n'o.
"""**
|
*,"*! ""1 o"n"'* |
*f n';,, . L__J
" [--:'] ,';7..
-.: t "';%,.
-i,.!..,,, ""^"-l'-;;{t**' j:l#r-
iyi,:?n$i,:*""" ffiBB'rI"o."L*.."'.i-ii.*'ji"[!si"""' ,,_r_,"'liiif+:rm U;1f$+f,
:[ilrF""#**F.tr
39
Page 1460 of 1681
Automatic Transmission Controls
- '98-'99 Models (cont'd)
YEUatu
-ry
UNDER-DASHFUSE/RELAYBOX
SERVICE CHECK CONNECTOR
1l[----- -i-f c+os
"""t"'
I see
-^
|.EE< ABS,
i-1
Ti:
t':,;"'1...,
*";'1".,,
- sRS
""1
#t*r-^:----- ENGTNE r--:-I TRANSM|SS|ON I rI r*ib rsis, I coNTRoLl r"sb'sr I coNTRoL I i
fl i$yjHlr'!;f#n",!ffiii:' \i- !- G401- PHOTO 56
r)J-1
i*J itTffe.- ir:";-
- - - -
s:I-
- - - -
;;; I HffilEr''". i T r.s:;
- -
II voliage l{ECM) | input
I w,?- | i.o, o,, L :t - - - - - jrfl - - - - - Si
j hfiY:t'
".
i 1-%** i
l_: f, "o'oror c410 4tr-------E[c4ts 17tr' c420 LJ__HSIJ
:ii t Hb ^f'""'* ! "."".* :;;! !
';l "lz*"
-
-[ ;;
"*i*'*i[Try[",".
""."]1,**^ "'""'"!
*u*u''o
ft_ _ _____+___ _ _'lfi g;to,..,. o"n,"J, f t",",,
Page 1461 of 1681
rolr--------- .r1
r-r onuer-r I
fiEg-< s"".-
"""::F'l;;l
^."""1"""*'[ "-'"1 "--
.I TRANSMISSION
r -.. Drive inputs l9.9ITn9!-^..,
neutralinput ir'^'tr -.".".._...............'- |(ArppNl ii#nr GTP-o4l (ATf^o3r rArPzr rAlft' Ialo Ar I A9 pA Ar 46
i MODULE (rCM)
LT GRN/WHT
ltIA
SeeA/T GearPositionlndrcator
ra
I
I
IF.4_mlffi:xrir,L
La)L-----g---i
c558
c430PHOfO 63
*"."1r---
'F--
cnN^'rHr iI GRNATVHTI GRN/BEDa-a
[f GRN"".,"."1f,
See A,rTGearPositionlndicator
7c413
- --I A/T GEAR
I POSTTTON
i swlTcHI PHA|A /0
I
I
IJ
BLK
1BLXc413
arrr< Distribution,
".^
I
pase144
b#^:--,J
See Ground
39-3
Page 1462 of 1681
Automatic Transmission Controls
- '00 Model
47n
24
FUSE 4AACX UE(8ADrO)
c2't7
'r,
Ir.g
l
See PowerDistribution,pag€ 1G9.
FUSE 52HOBfl, SIOP204
UNDER-HOODFUSE/BELAYBOX
c418Oerminals 15.17)
8
WHT/AIU
aa+See PowerDistfibution,page 10"8.
I
$See ABS,Brake Lights,Cruise Control
. B2t 432r--rsrbFswlIBattery back-up Btake switch input i
Shift lock Shilt conkol solenoid Lock-up control solenoid Linear solenoid \Vehicte JirCuif ly'C on valve control valve control valve eontrol Isoeed inDut control inDut !speed input control inputlvss) {rLUl tacoLl {SH B, rSH A' {LC A) (LC B) {L.s+J (LS ) Ic23 A2A At7 02 D7 Dl D3 817 8a -'c23 A28 A17 02 D7 D1 D3 817 88
T-lF$ffiT-il:
::m]'::.
1j$;$d.H-t,il: Tfl;;
ill}.-.'.-":[-{,* 'ffi; -lTl.'
i[fi;"
":ff":'[:{;,[fi::
iy:[*i xFEf"* llrTril ilfinpl -l-
"'i-f1.o"^.,,
i i--i , !r.Eli- -
L'q,j ;:i5?" *'.,
|
"ll!
i ll
I tf.f$sb
E W *$+iir [E''l
5i'i+r" "
I see venicre
-
|_
- -T ;'r'o'i;
i;*
**'""::.";
I
""
l'tr .,,,
"^::'[",,
39-4
Page 1464 of 1681
Automatic Transmission Controls
- '00 Model (cont'd)
[---;""'.f
-lc+os 141' c4o8 LJ-:*:IJ
|
:t
, ;:".1
*"",",1 "**-
I
-.11,[t*r'""
I .l ,.,1,","" .J,o*". i
r*ru;l
i.";-
- - -
Is"*
- - - - -
Fsil
- - -
;; I i.l{T'Fil^'- i I ;;
- -
I Ui3"*I voltage Inout
L js!'- - - - - - d": - - - - - 3t - - - - - roql j Hili:
i i-Ti*.*,*,, i F"H*i,'ll-------zrI_------16'rc4os 14tr' c408 LJ_j*::J
:tt, I ".ou.*l I I
r rii ^ r "."-,. r ^""",. r ". ::[ 9#3-
**[
[ [ X"., !r*g+;l"f-----
t
't
l;:,.il*[;,;
""T1",,,""
! ! !i;T-"{_
___-}.[1dnw'"t*il *"*-l "'o*n'l i'I---L-
I I NLi::--::::-:=a-*$$ti
.l_______l ",,, ,l ",,.
'r "*'
I_ITI ENGINE COOLANT
iddirioil I Jr l,.g:tilu;SENSOR lJJal PHora 17
c106
GFN/BLK
SERVICE CHECK CONNECTORPHOIO 76
-"^,:,[
.:
"{
'T[_:'*' "..1
;*liil, lFffi*'" I
c405
BLI
BLK I
I'
See GroundDistribution,pages 14-4and 14-5.
V
I ..
G401
39-6
Page 1503 of 1681
A/T Gear Position Indicator
UNDER.DASHFUSE/RELAYBOXPHOTA 58
POWERTRAIN TRANSMISSION
I D4. I coNrRoL | tr. lcoNrRoL
L$"r:j HS}H Lrulij
frBfii:'
*-1.'-f,"*' *,::-f,"*'c551
Ses PowatDislribution,page 10-5.
See Dashand ConsoleLights
'00 l4odel
't0
:ql
'98' 99 [4odels
c430
c558
410S€e Gaug€s,lndicators
See Dashand ConsolaLights
GAUGEASSEMBLY
A/r IGsa. IPoEltlon :lrdlcator I
I
I
I
I
I
I
I-t**r*",!
Indicdo6 |
I
I
L---ac9
c559
* = 98-99Models
Sgs GroundDistributon,pages 'l4{
and 1+5.
4
GRNAVHT
(" 5)
SeelnterlockSystem
Yi GBN/",i,ll I wHr
'12
GFNA!/HT
c413BLK1
BLK
V
T
I
I- - --a_ G40 t= PHOTO 56a
See PowerDiBaibution.
89
Page 1504 of 1681
- How the Circuit Works
With the ignition switch in ON (ll) or START (lll),
voltage is applied to the A,/T gear position indicator.
The A,/T gear position switch provides a ground for
each position. As an input is grounded, ils indicator
light comes on. lf you se,ecl B, tor example, ground
will be applied to the input of the A,/T gear position
indicator, and the R indicator bulb will come on.
With the headlight switch in PARK or HEAD, voltage
is applied to the RED/BLK wire terminal. this
changes the indicator panel illumination from lixed
to controlled by the dash lights dimmer inpul
through the RED wire.
When the lransmission ('98. 99 models) or
powertrain ('00 model) control module (TCM or
PCM) detects an abnormality in the automatic
transmission control system, or when you request
diagnostic trouble codes through the service
check connector, the TCM or PCM will make lhe D4
indicator light blink.
Refer to the Service Manual (Section 14,
Automatic Transmission) for soecific tests or
troubleshooting procedures.
89-1
