Volvo D13J - Electric and Electronic Systems

VOLVOEngines25
ElectricandElectronicSystems
WARNING
Alwaysweareyeprotectionwhenworkingaroundbatteriestopreventtheriskofinjury
duetocontactwithsulfuricacidoranexplosion.
W0001526
Neverdisconnectanychargingunitcircuitorbatterycircuitcablefromthebatterywhenthe
chargingunitisoperating.Asparkcancausetheammablevapormixtureofhydrogenand
oxygentoexplode.
Topreventpotentialsparksfromignitingcombustiblegasesproducedbysomebatteries,
attachthenegative(-)terminallastwhenhookingupandremovethenegativeterminalrst
aftertheenginehasstarted.Checkregularlyaroundtheengineandenginecompartment
forlooseorfrayedwires.Havealllooseorfrayedelectricalwirestightened,repairedor
replacedbeforeoperatingthevehicle.
GroundingPractices
Propergroundingforvehicleandengineelectricalandelectronicsystemsisnecessaryfor
propervehicleandengineperformanceandreliability.Impropergroundingwillresultin
uncontrolledandunreliableelectricalpaths.
Uncontrolledengineelectricalcircuitpathscanresultindamagetomainbearings,crankshaft
journalssurfacesandaluminumcomponents.Uncontrolledelectricalcircuitpathscanalso
causeelectricalnoisewhichmaydegradevehicleandradioperformance.
Operatingengineswithouttheengine-to-framegroundstrapinstalledcancausedamage
totheengine.Topreventelectricaldischargedamage,checktomakesuretheengines
electricalsystemhasanengine-to-framegroundstrap.Allgroundconnectionsshouldbe
tightandfreeofcorrosion.