Honda 1986 GoldWing GL1200A Manual page 70

eFI System
Troubleshooting
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Engine does not start or is hard to start
ChecK the following items before uSing this chart:
1) Fuel level.
2) Fuel valve ON.
3) Ignition sWitch ON.
4) Fuel pump shut-off sensor ON.
5) Starting motor IS in good condition.
6) Crankshaft is turned by starting motor.
7) Spark plug condition
8) Neutral indicator is ON.
9) Fuel system Indicator comes on for
1 .5 seconds when ignition switch is
turned ON
WARNING: Observe the following when
performing a spark test:
• Keep open flames or sparks away from
the work area.
• Purge the cylinder of residual gasoline
by cranking 2 or 3 seconds with the
engine stop switch and fuel valve OFF.
LED's: Turn crankshait by pressing starter LED's ON
I
FAUlTV PARTS: Inspect system or parts
I
button, then checK ECU LED's with ignition
I indicated.
switch ON.
~
Normal
LED's OFF
•
Faulty ECU (Try with known good ECU).
Remove spark plugs and check for spark
No Spark
•
Go to IGNITION SYSTEM
at each cylinder.
TROUBLESHOOTING
Spark OK
(see page 7-3}.
Pump
FUEL PUMP: Check that FUEL PUMP
Operates
"operates" for about 3 seconds after
•
Go to FUEL PRESSURE
ignition switch is turned ON. TROUBLESHOOTING
(see page 10-9).
Does Not Operate
Pump Won't
FUEL PUMP: Disconnect fuel pump
Operate
coupler and apply battery voltage between
•
Faulty fuel pump.
Br (+) and G (-) terminals to pump
Pump Operates
POWER TO COUPLER: Measure voltage
Battery
between Br ( +) and G (-) termmals of
pump harness coupler (white 2P coupler
Voltage
Poor contact at fuel pump coupler.
•
under seat) Battery voltage should be
Indicated for 1 5 seconds after ignition
switch is turned ON.
o
Volts
Pump
PUMP RELAY: Replace fuel pump relay in
Operates
I
PUMP RELAY; Check operation of fuel
I
fuselrelay box with a known good relay.
I
pump relay (see page 10-31).
Reconnect pump coupler Check if fuel
~
Good
J
No Good
pump operates.
&;nmo
Won',
Ooer.,e
•
Poor contact at
•
Faulty relay .
relay terminals.
10-10