INSTRUMENT AND CONTROL FUNCTIONS
3-7
3
EAU00106
Diagnosis deviceThis model is equipped with a self diag-
nosis for the following circuits.l
Throttle Position Sensor (T.P.S.)
circuit
l
Exhaust Ultimate Power valve
(EXUP) circuit
l
Fuel level indicator circuit
If some trouble should occur in any of
these circuits, the tachometer will re-
peatedly display as follows:
CB-53E
Use this chart to identify what circuit is
faulty according to the specified r/min
displayed.CB-54EIf the tachometer displays as described
above, take note of the specified r/min
and then take your motorcycle to a
Yamaha dealer for repair.
EC000004
CAUTION:@ To prevent engine damage, be sure
to consult a Yamaha dealer as soon
as possible if the tachometer dis-
plays a repeated change in r/min. @
EAU01652
Coolant temperature gaugeThis gauge indicates the coolant tem-
perature when the main switch is on.
The engine operating temperature will
vary with changes in weather and en-
gine load. If the needle points to the red
zone or higher, stop your motorcycle
and let the engine cool. (See page 6-11
for details.)
EC000002
CAUTION:@ When the engine is overheated, do
not continue riding. @
0 r/min for
3 seconds
Specified r/min
for the faulty
circuit for
2.5 seconds
(see chart below)
Current
engine
r/min for
3 seconds
Specified
r/min
Faulty circuit
3,000 r/min
Throttle Position Sensor
(T.P.S.)
7,000 r/min
Exhaust Ultimate Power
valve (EXUP)
8,000 r/min
Fuel level indicator
1. Coolant temperature gauge
2. Red zone
E_4sv_Functions.fm Page 7 Tuesday, August 31, 1999 3:42 PM
