Coolant Temperature Gauge; Ect Sensor - Honda NSS250S Manual

LIGHTS/METERS/SWITCHES

COOLANT TEMPERATURE GAUGE/

ECT SENSOR

SYSTEM INSPECTION
When the ignition switch turns ON, check all gauge
needles move to full scale and then return to zero.
If the coolant temperature gauge needle does not
show initial function but other needles show initial
functions, faulty combination meter.
If all needles do not move, perform the power and
ground line inspection of the combination meter
(page 22-10).
If the coolant temperature gauge needle shows ini-
tial function, but coolant temperature gauge needle
does not moves abnormal after the engine is
warmed up, check the following:
NEEDLE DOES NOT MOVE
Remove the luggage lower box (page 3-16).
Disconnect the ECT sensor 3P (Gray) connector.
Short the connector terminals of the wire side and
ground with the jumper wire.
CONNECTION: Green/blue – Ground
Turn the ignition switch ON, check that the coolant
Immediately
temperature gauge move to "H".
disconnect the
jumper wire from
The needle moves if the system is normal.
the ground when
In that case, check the ECT sensor (page 22-25).
the needle moves
If the needle does not move, check for open circuit
to "H" to prevent
in Green/blue wire.
damage to gauge.
If the wire is properly, faulty combination meter.
After inspection, erase the self diagnosis memory
data from the PCM/ECM (page 6-16).
22-24
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COOLANT TEMPERATURE GAUGE
ECT 3P CONNECTOR
(Wire side/female terminal)
ECT 3P CONNECTOR
COOLANT TEMPERATURE GAUGE
Green/
blue