Coolant Temperature Gauge/Ect Sensor System Inspection - Honda GL1800 Service Manual

LIGHTS/METERS/SWITCHES
COOLANT TEMPERATURE GAUGE/
ECT SENSOR
SYSTEM INSPECTION
1. Check that the tachometer, speedometer and fuel
gauge operate properly.
• If they do not function, check the power
source
(page 20-17).
• If they function properly, go to step 2.
2. Remove the left radiator stay (page 5-71).
Turn the ignition switch to "OFF" and disconnect
the ECT sensor 3P connector.
3. Ground the Green/black wire terminal of the ECT
sensor connector with a jumper wire.
Turn the ignition switch to "ON" and check the
coolant temperature gauge.
The gauge needle should move to "H."
• If the needle moves, check the ECT sensor.
• If the needle does not move, go to step 4.
4. Remove the combination meter (page 20-17).
Check the Green/black wire for continuity
between the combination meter 20P blue con-
nector and ECT sensor connector.
There should be continuity.
• If there is continuity, replace the meter/gauge
assembly (page 20-19).
20-22
line and sensor ground line
ECT SENSOR CONNECTOR
OOLANT TEMPERATURE GAUGE
METER 20P BLUE CONNECTOR
(viewed from the terminal side)
reen/black
reen/black