Tachometer; Coolant Temperature Gauge/ Thermosensor - Honda C8R600F4 Service Manual

TACHOMETER
SYSTEM INSPECTION
Check that the speedometer and coolant tempera-
ture gauge function properly.
• If they do not function, perform the power/
ground line inspection of the combination meter
(page 19-7).
• If they function, disconnect the combination
meter connector (page 19-6) and turn the ignition
switch ON.
Measure the voltage between the Yellow/green
(+)
and Green/black (-) wire terminals of the
wire harness side connector.
There should be battery voltage.
- If there is battery voltage, replace the printed
circuit board.
If there is no voltage, check for open or short
circuit in Yellow/green wire.
COOLANT TEMPERATURE GAUGE/
THERMOSENSOR
SYSTEM INSPECTION
Check that the speedometer and tachometer func-
tion properly.
• If they do not function, perform the power/
ground line inspection of the combination meter
(page 19-7).
•If they function, raise the fuel tank (page 2-3), dis-
connect the thermosensor wire connector and
ground it with a jumper wire.
Turn the ignition owitch ON and check the coolant
temperature gauge needle.
The needle should move to "H".
CAUTION:
Immediately turn the ignition switch OFF when the
nP.P.dlP. moves to "H" (hot) to prevent the gauge
from being damaged.
-If the needle moves, check the thermosensor.
-If the needle does not move, check for open cir-
cuit in Green/blue wire.
If the Green/blue wire is OK, replace the printed
circuit board.
LIGHTS/METERS/SWITCHES
19-9