Speedometer Inspection; Speedometer Does Not Operate - Honda GL1800 Service Manual

LIGHTS/METERS/SWITCHES
ASSEMBLY
Assemble the combination meter in the reverse
order of disassembly.
METER/GAUGE
ASSEMBLY
SPEEDOMETER
INSPECTION

Speedometer does not operate

1. Check that the tachometer, coolant temperature
gauge 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. Check that the engine control module (ECM)
stores failure code 11 (page 5-16).
• If the ECM stores failure code 11, perform the
troubleshooting on page 5-28.
• If the ECM does not store failure codes, go to
step 3.
3. Remove the combination meter (page 20-17).
Place the motorcycle on its center stand, shift the
transmission into neutral and turn the ignition
switch to "ON."
Measure the voltage between the White/black (+)
and Green (–) wire terminals of the combination
meter 20P black connector.
There should be 0 V to 5 V pulse voltage while
slowly turning the rear wheel by hand.
• If the pulse voltage appears, replace the
meter/gauge assembly (page 20-19).
• If the pulse voltage does not appear, check
for:
– open circuit in the White/black wire
– loose or poor contact in the related connec-
20-20
METER LENS
LCD ASSEMBLY
TURN SIGNAL RELAY
CIRCUIT BOARD
line and sensor
between the combination meter and speed
sensor
tors
METER VISOR
ground line
METER 20P BLACK CONNECTOR
(viewed from the terminal side)
LO ER CASE
TURN SIGNAL
RELAY IRE
IRE CLAMP
White/black
reen