Honda GL1800 Service Manual page 146

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Table of Contents

Number of MIL

• Open or short circuit in left O

• Faulty left O

• Loose or poorly connected right knock

sensor connector

• Open or short circuit in right knock sensor

• Faulty right knock sensor

• Loose or poorly connected left knock sen-

sor connector

• Open or short circuit in left knock sensor

• Faulty left knock sensor

• Loose or poorly connected idle air control

(IAC) valve connector

• Open or short circuit in IAC valve wire

• Faulty idle air control valve

• Loose or poorly connected connector in

gear position switch related circuits

• Open or short circuit in gear position

switch wires

• Faulty gear position switch

• Faulty clutch switch

• Faulty side stand switch

-PROM in ECM

FUEL SYSTEM (Programmed Fuel Injection)

(Fail-safe contents)

• Engine operates normally

• Engine stalls, hard to start,

rough idling

• Engine operates normally

• ECM does not hold the self-

diagnostic data

• Engine operates normally

Troubleshooting