Honda AFRICA TWIN XRV750 (1987-2002) [228/291] Electrical system 9 7
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Honda AFRICA TWIN XRV750 (1987-2002) [228/291] Electrical system 9 7

Honda AFRICA TWIN XRV750 (1987-2002) [228/291] Electrical system 9 7

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Electrical system 9 7 5 Each fuse is clearly marked with its rating and must only be replaced by a fuse of the correct rating A spare fuse of each rating except the main fuse is housed in the fusebox and a spare main fuse is housed with the starter relay see illustration If a spare fuse is used always replace it so that a spare of each rating is carried on the bike at all times Warning Never put in a fuse of a higher rating or bridge the terminals with any other substitute however temporary it may be Serious damage may be done to the circuit or a fire may start 6 If a fuse blows be sure to check the wiring circuit very carefully for evidence of a shortcircuit Look for bare wires and chafed melted or burned insulation If the fuse is replaced before the cause is located the new fuse will blow immediately 7 Occasionally a fuse will blow or cause an open circuit for no obvious reason Corrosion of the fuse ends and fusebox terminals may occur and cause poor fuse contact If this happens remove the corrosion with a wire brush or emery paper then spray the fuse end and terminals with electrical contact cleaner A 6 Lighting system check 1 The battery provides power for operation of the headlight tail light brake light and instrument cluster lights If none of the lights operate check the battery first making sure the terminals are clean and secure and the voltage level is sufficient Low battery voltage indicates either a neglected or faulty battery or a defective charging system Refer to Section 3 for battery checks and Sections 30 and 31 for charging system tests Also check the fuses Note that if there is more than one problem at the same time It Is likely to be a 6 3a HI beam relay arrowed 5 5 A spare main fuse arrowed is housed with the relay fault relating to a multi function component such as one of the fuses governing more than one circuit or the ignition switch Headlight 2 If a headlight beam fails to work first check the fuse see Section 5 and then the bulb s see Section 7 If they are good use jumper wires to connect the bulb in question directly to the battery terminals If the light comes on the problem Iles in the wiring or connectors the switches in the circuit or the relay s XRV750 models Alternatively the bulb can be checked for continuity using a multimeter Refer to Section 20 for the switch testing procedures and also to the wiring diagrams at the end of this Chapter 3 On UK and some European XRV750 models a relay controls each of the headlight circuits i e one for HI beam one for LO beam On other European models there is a HI beam relay only Refer to the relevant Wiring Diagram at the end of the Chapter for your model or simply remove the fairing see Chapter 8 and check to see whether there are two relays or one for the headlights If a beam does not work and the relay is suspected of being faulty the easiest way to tell is to substitute it with the other one twin relay models or another one single relay models if available Remove the fairing to access the relay s see illustrations If the beam then works the faulty relay must be replaced with a new one If a substitute is not available remove the suspect one and test it as follows set a multimeter to the ohms x 1 scale and connect it across the relay s white green and white black LO BEAM or blue yellow HI beam wire terminals There should be no continuity infinite resistance Using a fully charged 12 volt battery and two insulated jumper wires connect the positive terminal of the battery to the white LO beam or blue HI beam wire terminal of the relay and the negative terminal to the green wire terminal At this point the relay should be heard to click and the meter read 0 ohms continuity If this is the case the relay is good If the relay does not click when battery voltage is applied and indicates no continuity infinite resistance across its terminals it is faulty and must be replaced with a new one 4 If the relay is good check for battery voltage at the white green wire terminal on the relay wiring connector with the ignition ON If there is no voltage check the wiring between the relay wiring connector and the ignition switch via the fusebox then check the switch itself see Section 19 If voltage is present check that there is continuity to the headlight wiring connector in the blue or white wire according to relay and continuity to earth ground in the green wire from the headlight connector Also check for battery voltage at the white or blue according to relay wire terminal on the relay wiring connector with the ignition ON the light switch ON and the dimmer switch set to LO or HI as required If voltage is present check for continuity to earth ground in the green wire from the relay wiring connector Repair or renew the wiring or connectors as necessary 5 If the low beam does not work on single relay models check for battery voltage at the white wire terminal on the headlight wiring connector with the ignition ON the light switch ON and the dimmer switch set to LO If 6 3b LO beam relay arrowed 9

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