Yamaha YZF-R1B 2012 Service Manual

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ELECTRICAL COMPONENTS8-128EAS27990CHECKING THE BULBS AND BULB SOCK-ETSTIPDo not check any of the lights that use LEDs.Check 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” are used for turn signal lights andcan be removed from the socket by pushingand turning the bulb counterclockwise.• Bulbs “c” are used for auxiliary and licenseplate lights and can be removed from theirrespective socket by carefully pulling themout.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.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.TIPBefore 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