Thermo Switch Inspection - Honda 1998 VT750C Service Manual

THE INDICATOR DOES NOT GO OFF
Remove the right side cover (page 2-4).
Disconnect the pilot lamp checker connector and
ignition switch ON.
Check for coolant temperature indicator illuminates.
If the coolant temperature indicator illuminates,
check for a short circuit in the pilot lamp checker
connector Green/Blue terminal.
If the circuit is normal, replace the thermo switch.
If the coolant temperature indicator does not come
on, connect the pilot lamp checker connector and
ignition switch ON.
Check that the coolant temperature indicator
illuminates.
• If the indicators does not go off:
- Faulty pilot lamp checker
• If the indicators should come on for few seconds,
then go off:
- Faulty thermo switch
THE INDICATOR DOES NOT ILLUMINATE
Remove the right side cover (page 2-4).
Disconnect the pilot lamp checker connector, check
for continuity between the Green/Blue wire and
ground.
Check that the coolant temperature indicator
illuminates.
If the coolant temperature indicator does not
illuminates, check for an open circuit in Green/Blue
wire.
If the circuit is normal, replace the coolant
temperature indicator bulb.
If the coolant temperature indicator illuminates,
measure the battery voltage between the pilot lamp
checker connector Black/Brown and Green terminal.
• If there is battery voltage:
- Faulty pilot lamp checker
• If there is no voltage:
- Open circuit or loose connection in Black/Brown
wire
THERMO SWITCH INSPECTION
mI!I!IIl-- _
Wear insulated gloves and adequate eye protec-
tion.
• Keep flammable materials away from the elec-
tric heating element.
LIGHTS/METERS/SWITCHES
THERMO SWITCH
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