Yamaha YZF-R1 2007 Service Manual

ELECTRICAL COMPONENTS8-88EAS27990CHECKING THE BULBS AND BULB SOCK-ETSCheck each bulb and bulb socket for damageor wear, proper connections, and also for conti-nuity between the terminals.Damage/wear → Repair or replace the bulb,bulb socket or both.Improperly connected → Properly connect.No continuity → Repair or replace the bulb,bulb socket or both.Types of bulbsThe bulbs used on this vehicle are shown inthe illustration.• Bulbs “a” are used for the headlights andusually use a bulb holder that must bedetached before removing the bulb.• Bulbs “b” is used for turn signal and can beremoved from the socket by pushing andturning the bulb counterclockwise.• Bulbs “c” are used for auxiliary lights and canbe removed from their respective socket bycarefully pulling them out.Checking the condition of the bulbsThe following procedure applies to all of thebulbs.1. Remove:• BulbWARNINGEWA13320Since the headlight bulb gets extremelyhot, keep flammable products and yourhands away from the bulb until it hascooled down.CAUTION:ECA14380• Be sure to hold the socket firmly whenremoving the bulb. Never pull the lead,otherwise it may be pulled out of the ter-minal in the coupler.• Avoid touching the glass part of the head-light bulb to keep it free from oil, other-wise the transparency of the glass, thelife of the bulb, and the luminous flux willbe adversely affected. If the headlightbulb gets soiled, thoroughly it with a clothmoistened with alcohol or lacquer thin-ner.2. Check:• Bulb (for continuity)(with the pocket tester)No continuity → Replace.NOTE:Before checking for continuity, set the pockettester to “0” and to the “Ω × 1” range.▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼a. Connect the positive tester probe to termi-nal “1” and the negative tester probe to ter-minal “2”, and check the continuity.b. If reading indicate no continuity, replace thebulb.▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲Checking the condition of the bulb socketsThe following procedure applies to all of thebulb sockets.1. Check:• Bulb socket (for continuity)(with the pocket tester)No continuity → Replace.Pocket tester90890-03112Analog pocket testerYU-03112-CPocket tester90890-03112Analog pocket testerYU-03112-CManuals by Motomatrix / www.motomatrix.co.uk / The Solution For Lost Motorcycle Coded Keysemail: info@motomatrix.co.uk