Headlight Adjuster Relay System Inspection - Honda GL1800 Service Manual

3. Check that the resistance between the Yellow/
blue and Blue/green wire terminals varies with
the headlight adjusting switch position while
operating the switch.
Clockwise (from Lo to Hi position):
Resistance increases
Counterclockwise (from Hi to Lo position):
Resistance decreases
• If the measurements are normal, go to step 4.
• If the measurements are abnormal, replace
the panel switch assembly (page 20-32).
4. Check for continuity between the Green wire ter-
minal of the wire harness side connector and
ground.
There should be continuity.
• If there is continuity, go to step 5.
• If there is no continuity, check for an open cir-
cuit in the Green wire between the panel
switch connector and ground terminal.
5. Start the engine and let it idle.
Measure the voltage between the Brown/red
wire terminal (+) and ground (–).
There should be battery voltage.
• If there is battery voltage, the system is OK.
• If there is no battery voltage, check for:
– open circuit in the Brown/red wire between
the panel switch connector and headlight
adjuster relay
– headlight adjuster relay system
HEADLIGHT ADJUSTER RELAY
SYSTEM INSPECTION
1. Turn the ignition switch to "ON" and check that
the oil pressure indicator comes on.
Start the engine and check that the oil pressure
indicator goes off.
• If the indicator goes off, go to step 2.
• If the indicator remains on, check the oil pres-
sure switch (page 20-13).
LIGHTS/METERS/SWITCHES
WITCH IDE CONNECTOR
(viewed from the terminal side)
Blue/green
Yellow/blue
IRE HARNESS SIDE CONNECTOR
(viewed from the terminal side)
Green
IRE HARNESS SIDE CONNECTOR
(viewed from the terminal side)
Brown/red
20-11