Yamaha Fz1n Service Manual
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ELECTRICAL COMPONENTS 8-89 EAS27970 ELECTRICAL COMPONENTS
ELECTRICAL COMPONENTS 8-90 1. Main switch (immobilizer unit) 2. Front brake light switch 3. Starter relay 4. Battery 5. Fuse box 6. Rear brake light switch 7. Neutral switch 8. Sidestand switch 9. Oil level switch 10.Radiator fan motor 11.Horn 12.Ignition coil
ELECTRICAL COMPONENTS 8-92 1. Coolant temperature sensor 2. Intake air temperature sensor 3. Intake air pressure sensor 4. Fuel pump 5. ECU 6. Lean angle sensor 7. Starting circuit cut-off relay 8. Headlight relay (on/off) 9. Radiator fan motor relay 10.Turn signal relay 11.Recifier/regulator 12.Throttle position sensor 13.Sub-throttle position sensor
ELECTRICAL COMPONENTS 8-93 EAS27980 CHECKING THE SWITCHES
ELECTRICAL COMPONENTS 8-94 1. Main switch 2. Horn switch 3. Dimmer switch 4. Pass switch 5. Turn signal switch 6. Hazard switch 7. Clutch switch 8. Sidestand switch 9. Engine stop switch 10.Front brake light switch 11.Start switch 12.Oil level switch 13.Neutral switch 14.Rear brake light switch 15.Fuse box 16.O 2 sensor
ELECTRICAL COMPONENTS 8-95 Check each switch for continuity with the pocket tester. If the continuity reading is incorrect, check the wiring connections and if necessary, replace the switch. CAUTION: ECA14370 Never insert the tester probes into the coupler terminal slots “1”. Always insert the probes from the opposite end of the coupler, taking care not to loosen or damage the leads. NOTE: Before checking for continuity, set the pocket tester to “0” and to the “ Ω × 1” range. When checking for continuity, switch back and forth between the switch positions a few times. The switches and their terminal connections are illu strated as in the following example of the main switch. The switch positions “a” are shown in the far left column and the switch lead colors “b” are shown in the top row. The continuity (i. e., a closed circuit) between switch terminals at a given switch position is indication by “ ” There is continuity between red, brown/blue, and brown/red when the switch is set to “ON” and between red and brown/red when the switch is set to “ ”. Pocket tester 90890-03112 Analog pocket tester YU-03112-C
ELECTRICAL COMPONENTS 8-96 EAS27990 CHECKING THE BULBS AND BULB SOCK- ETS Check each bulb and bulb socket for damage or 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 bulbs The bulbs used on this vehicle are shown in the following illustration. Bulbs “a” and “b” are used for the headlights and usually use a bulb holder that must be detached before removing the bulb. The majority of these types of bulbs can be removed from their respective socket by turn- ing them counterclockwise. Bulbs “c” is used for turn signal and tail/brake lights and can be removed from the socket by pushing and turning the bulb counterclock- wise. Checking the condition of the bulbs The following procedure applies to all of the bulbs. 1. Remove: Bulb WARNING EWA13320 Since the headlight bulb gets extremely hot, keep flammable products and your hands away from the bulb until it has cooled down. CAUTION: ECA14380 Be sure to hold the socket firmly when removing 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, the life of the bulb, and the luminous flux will be adversely affected. If the headlight bulb gets soiled, thoroughly it with a cloth moistened 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 pocket tester 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. Connect the positive tester probe to termi- nal “1” and the negative tester probe to ter- minal “3”, and check the continuity. c. If either of the readings indicate no continu- ity, replace the bulb. ▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲ Checking the condition of the bulb sockets Pocket tester90890-03112 Analog pocket tester YU-03112-C