Honda 1986 GoldWing GL1200A Manual page 78

CFI System
Troubleshooting~o~'~~~~~~~~~~~~~~~~~~~~~~
Poor performance at low and Idle speeds.
Check the following items before using this chart:
1) Spark plugs.
2) Idle speed.
3)
Cylinder compression (valve clearance).
4)
Fouled or clogged air cleaner.
5) Loose battery terminals.
6) Poor ground contact (engine side).
LED's: Check LED's on ECU with engine
running
LED's OFF
LED's ON
FAULTY PART: Inspect system or parts
indicated.
Normal
• Faulty ECU. Try with a known good ECU.
INJECTORS: Inspect each injector
(see page 10-20).
Normal
Abnormal
1-----_.
Faulty injector or wires.
• Incorrect pressure applied to PB sensor.
Connect
a
vacuum pump as shown. Start
engine and check PB sensor hoses for
blockage. Vacuum gauge should indicate
intake manifold vacuum.
Vacuum
3·way iOlnt
Normal
Abnormal
Check and repair PB hose
Correct
AIR JETS: Inspect
vacuum air jets at each
intake pipe for blockage
(see page 10-24).
Blocked
Incorrect
PB SENSOR: Inspect each PB sensor
(see page 10-22).
Normal
THROTTLE VALVES: Inspect
synchronization of throttle valves
(see page 3-5).
Incorrect
Abnormal
1 - - - - -.......
Faulty PB sensor.
Correct
~-----I~.
Go to FUEL PRESSURE (see page 10-9).
THROTTLE VALVES: Check and adjust
synchronization (see page 3-5).
Incorrect
10-18
Correct
No Good
• Go to FUEL
PRESSURE
(see page 10-9).
• Incorrect
synchronization.