Honda GOLDWING GL1800, Руководство по обслуживанию

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FUEL SYSTEM (Programmed Fuel Injection)
5-3
SERVICE INFORMATION
GENERAL
• Work in a well ventilated area. Smoking or allowing flames or sparks in the work area or where gasoline is stored can
cause a fire or explosion.
• Be sure to relieve the fuel pressure with the ignition switch turned to “OFF.”
• Bending or twisting the control cables will impair smooth operation and could cause the cables to stick or bind,
resulting in loss of vehicle control.
• Do not apply commercially available carburetor cleaners to the inside of the throttle bore, which is coated with
molybdenum.
• Do not snap the throttle valve from full open to full close after the throttle cable has been removed. It may cause
incorrect idle operation.
• Seal the intake manifold ports with tape or a clean cloth to keep dirt and debris from entering the engine after the
throttle body has been removed.
• Do not damage the throttle body. It may cause incorrect throttle and idle valve synchronization.
• Prevent dirt and debris from entering the air passages after the throttle body has been removed. Clean them using
compressed air if necessary.
• The throttle body is factory pre-set. Do not disassemble in a way other than shown in this manual.
• Do not loosen or tighten the white painted bolts, nuts and screws of the throttle body. Loosening or tightening them can
cause throttle and idle valve synchronization failure.
• Tighten the yellow painted bolts of the fuel rails to the specified torque.
• The parts of the throttle body not shown in this manual should not be disassembled.
• Always replace the O-ring when the fuel pump is removed.
• The PGM-FI (Programmed Fuel Injection) system is equipped with the self-diagnostic system described on page 5-8.
• When checking the PGM-FI system, always follow the steps in the troubleshooting flow chart (pages 5-16 through 5-55).
• The PGM-FI system is provided with a fail-safe function to secure a minimum running capability even when there is
trouble in the system. When any abnormality is detected by the self-diagnosis function, running capability is
maintained by preset value in the simulated program map. When any abnormality is detected in the injector(s), ignition
pulse generator and/or camshaft position sensor, the fail-safe function stops the engine to protect it from damage.
• A faulty PGM-FI system is often related to poorly connected or corroded connections. Check those connections before
proceeding.
• When disassembling the fuel system parts, note the location of the O-rings. Replace them with new ones upon
reassembly.
• Always replace the sealing washer when the sealing bolt in the fuel rail is removed or loosened.
• Use a digital tester for PGM-FI system inspection.
• See section 17 for FI IGN relay inspection.
• See section 19 for the following components:
– ECT sensor
– fuel level sensor
– gear position switch
SPECIFICATIONS
ITEM SPECIFICATIONS
Throttle body identification number GQ61A
Throttle grip free play 2 – 6 mm (1/12 – 1/4)
Intake air temperature sensor resistance (20
°
C/68
°
F) 2.2 – 2.7 k
Ω
Engine coolant temperature sensor resistance
(20
°
C/68
°
F)
2.3 – 2.6 k
Ω
Throttle position sensor resistance (20
°
C/68
°
F) 4 – 6 k
Ω
Fuel injector resistance (20
°
C/68
°
F) 11.1 – 12.3
Ω
Camshaft position sensor peak voltage 0.7 V minimum
Ignition pulse generator peak voltage 0.7 V minimum
Manifold absolute pressure at idle 400 – 450 mm Hg (15.7 – 17.7 in Hg)
Fuel pressure at idle 343 kPa (3.5 kgf/cm
2
, 50 psi)
Fuel pump flow (at 12 V) 133 cm
3
(4.5 US oz, 4.7 Imp oz) minimum/10 seconds
Idle speed 700
±
70 rpm