clock rem ain s fun ctiona l regardless of t he ign ition
switch posit ion.
The vehicle operator can choose to h ave the
opt ional ambien t tempera ture indicator displa yed
instead of t he clock inform ation, bu t the clock a nd
ambient temperatur e in dicator cannot be displayed
at the same tim e. The clock or ambient t empera ture
indicator displa y option is select ed using the mult i-
function in dicator clock switch on the instru ment
cluster circuit board. Th is switch is actuated m anu-
ally by depressing the clock switch push bu tton that
extends th rough the lower edge of the cluster lens
below the left end of the mult i-function indica tor.
Actuating this swit ch momenta rily will t oggle the
display between the clock and am bient t empera tur e
indicator modes. Actua ting this switch t wice with in
about one secon d will cau se the display to toggle, but
then automa tica lly revert to t he originally selected
mode aft er about t wenty seconds.
See the owner ’s manual in the vehicle glove box for
more information on the fea tures, use, oper ation and
setting procedur es for the clock. For proper t est ing of
the instrument clu ster cir cuitry tha t controls the
clock funct ions, a diagn ost ic scan tool is r equired.
Refer to t he appropriate diagnostic informat ion.
COOLAN T LOW I N DI CAT OR
DESCRIPTION
A coolan t low indica tor is standar d equipmen t on
all instr umen t clusters. The coolant low indicator is
locat ed nea r th e lower edge of th e in st rumen t clu st er,
to the left of the m ulti-funct ion in dicator display. The
coolan t low indicator consists of the Inter national
Contr ol a nd Display Symbol icon for “Low Engine
Coolan t” imprinted with in a rectan gular cutou t in
the opa que layer of the instr umen t cluster overlay.
The da rk outer la yer of th e overla y prevent s the indi-
cator from being clea rly visible when it is not illumi-
nated. A red Light Emitting Diode (LED) behind th e
cutout in the opa que la yer of the overla y causes the
icon to appear silhouetted a gainst a red field throu gh
the tran slucen t outer layer of the overlay when t he
indicator is illu min ated from behind by the LED,
which is solder ed onto the instrumen t cluster elec-
tronic circuit boar d. Th e coolan t low indicator is ser-
viced a s a unit with t he in st rumen t cluster.
OPERATION
The coola nt low indica tor gives an indication to the
vehicle operat or wh en the en gin e coola nt level is low.
This indicator is contr olled by a transistor on th e
instr umen t clu st er circuit boa rd based u pon cluster
pr ogrammin g and a ha rd wir ed input received by the
cluster from t he engine coolant level swit ch. The cool-
ant low in dicator Light Em itt ing Diode (LE D) is com -
pletely cont rolled by t he inst rument cluster logic
circuit, an d t hat logic will only allow this indica tor to
operat e wh en the instru ment cluster det ects t hat the
ign ition switch is in th e On position . Therefore, th e
LED will always be off wh en the ign ition switch is in
any position except On. The LED only illum inates
when it is provided a pa th to gr ound by the instru-
ment clu st er t ransist or. The in st rument clust er will
turn on the coolant low in dicator for the followin g
reason s:
• Bulb Test - Ea ch time the ignition switch is
turned to th e On position th e coola nt low indicator is
illuminated for about two seconds a s a bu lb test .
• Engine Coolant Level Sw itch Input - Each
time t he cluster detect s an appropr iate input on t he
low coola nt fluid level sen se circuit (engine coolant
level swit ch resist ance low = en gin e coolant level low)
while the ignition switch is in the On position, the
coolan t low in dicator will be illu minated. The indica-
tor r emains illuminat ed until the low coolant flu id
level sense inpu t t o th e cluster changes (engine cool-
ant level switch resist ance high = engine coolant
level full), or unt il th e ignition swit ch is t urned to
the Off position , whichever occurs first. The engine
coolan t level switch also feat ures a diagnostic resis-
tor connected in para llel bet ween the switch input
and out pu t to pr ovide the cluster with verificat ion
that the low coolan t fluid level sense circu it is not
open or shorted.
The engine coolan t level switch int egral to the cool-
ant bott le provides a hard wired in put t o the instru-
ment cluster cir cuitr y through the low coolan t flu id
level sense circuit. The engine coola nt level switch
and th e low coolant fluid level sense circuit to t he
instr umen t clust er can be dia gnosed using conven-
tional diagnostic tools and met hods. For proper diag-
nosis of t he instrument cluster cir cuitry that contr ols
the coolant low indica tor, a diagn ost ic sca n tool is
required. Refer to the appropriate diagn ost ic infor-
mation.
EN GI N E T EM PERAT U RE
GAU GE
DESCRIPTION
An en gin e coolant tem perat ure ga uge is stan da rd
equipm ent on a ll instr umen t clu ster s. The en gin e
coolan t t empera ture gauge is locat ed in the upper
right cor ner of the inst rument cluster, t o t he right of
the speedom eter. The en gin e coolan t tempera ture
gau ge consists of a mova ble gauge needle or poin ter
controlled by th e in strument cluster circuitry an d a
fixed 45 degree scale on the cluster overlay th at
reads left -to-right fr om 120° C to 40° C for Canadia n
vehicles, or fr om 250° F to 110° F for United Stat es
vehicles. An Inter national Control and Display Sym-
bol icon for “E ngine Coolant Tempera tur e” is locat ed
VA INSTRUMENT CLUSTER 8J - 15
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