Yamaha 2004 YP400 Service Manual page 413

FAULTY LIGHTING OR SIGNALING SYSTEM
EAS00866
FAULTY LIGHTING OR SIGNALING SYSTEM
HEADLIGHT DOES NOT COME ON
• Wrong headlight bulb
• Too many electrical accessories
• Hard charging
• Incorrect connection
• Improperly grounded circuit
• Poor contacts (main switch)
• Burnt-out headlight bulb
• Faulty headlight relay (on/off)
HEADLIGHT BULB BURNT OUT
• Wrong headlight bulb
• Faulty battery
• Faulty rectifier/regulator
• Improperly grounded circuit
• Faulty main switch
• Headlight bulb life expired
TAIL/BRAKE LIGHT DOES NOT COME ON
• Too many electrical accessories
• Incorrect connection
TAIL/BRAKE LIGHT BULB BURNT OUT
• Faulty battery
• Incorrectly adjusted brake light switch(s)
TURN SIGNAL DOES NOT COME ON
• Faulty turn signal switch
• Faulty turn signal relay
• Burnt-out turn signal bulb
• Incorrect connection
• Damaged or faulty wire harness
• Improperly grounded circuit
• Faulty battery
• Blown, damaged or incorrect fuse
TURN SIGNAL BLINKS SLOWLY
• Faulty turn signal relay
• Faulty main switch
• Faulty turn signal switch
• Incorrect turn signal bulb
TURN SIGNAL REMAINS LIT
• Faulty turn signal relay
• Burnt-out turn signal bulb
TURN SIGNAL BLINKS QUICKLY
• Incorrect turn signal bulb
• Faulty turn signal relay
• Burnt-out turn signal bulb
HORN DOES NOT SOUND
• Improperly adjusted horn
• Damaged or faulty horn
• Faulty main switch
• Faulty horn switch
• Faulty battery
• Blown, damaged or incorrect fuse
• Faulty wire harness
9 - 6
TRBL
SHTG