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11 18 SH CAB INTERIOR LIGHTING CAB STEPWELL L IGHTING/INTERIOR LIGHTING DOOR SWITCH, DRIVER ’SS ID E If the door on the d river ’s s ide is opened, door switch E514 is activated (connection between 1 and 2). A a result, there is a voltage on C062, C063 and D91 1 (alarm system) through fuse E045 (interior lighting fuse), w ire 1 107, c o n ta c ts 1-2o f door switch E514, wire 2647, diode D783 (driver ’s s ide interior lighting diode), w ire 2600. This activates the cab stepwell lighting o n both the driver ’ss id e (C062) and the c o-driver ’s s ide (C063). T he VIC (D900) also receives a v oltage on connection point 1, connector 595. The V IC then turns o n the cab lighting (C1 19/C192), provided the s witches (C1 19, C192, C859 and C837) are in the correct position, activating it through wire 2610 (connection point 4, connector 592 of the V IC unit). When the door on the d river ’ss id ei sc lo s e d (c o n ta c ts 1-2o f door switch E514 interrupted), the voltage to connection point 1, connector 595 of the V IC is lost. C onnection point 4, connector 592 will then continue to be supplied w ith power for another 9 s econds approximately . After approximately 9 seconds, the s upply v oltage is switched of f and the lights g o out. If the v ehicle ignition is switched on (contact made) within 9 s econds, the power supply to connection point 4, connector 592 of the V IC will be switched of f immediately . The lighting will be switched of f immediately . If the a larm system (D91 1, connection point 16 of connector 604, wire 3647) sends a v oltage to connection point 13, connector 594 of the V IC to indicate that the doors have locked correctly , the lighting w ill also go of f immediately . CAB STEPWELL L IGHTING/INTERIOR LIGHTING DOOR SWITCH, CO -DRIVER ’S SIDE If the door on the c o-driver ’s s ide is opened, door switch E515 is activated (connection between 1 and 2). As a result, there is a lso a v oltage on both C062 and C063 through fuse E045 (interior lighting fuse), w ire 1 107, contacts 1-2o f door switch E515, wire 2600. This activates the cab stepwell lighting o n both the driver ’ss id e (C062) and the c o-driver ’s s ide (C063). Interior lighting w ith map -r eading light (driver ’s a nd co -d river ’ss id e ) There is a c ombined interior light and map-reading light on both s ides of the c ab against the roof. T he lamps operate in the same way o n the driver ’s s ide and co-driver ’s side. A v oltage is applied to c onnection point 2 o f C1 19 and C192 respectively through fuse E045, wire 1 107. Depending on the s witch position, the interior light or the m ap-reading light is now switched on individually or together . INTERIOR LIGHTS TWO -W A Y S WITCHING The c ondition to turn on both interior lights is that C1 19 (interior light with switch, d river ’s side) and C192 (interior light with switch, co-driver ’s s ide) must be switched together . In other words: the switch is connected to contact 1 . Situation 1 : S witch C 837 in ‘0 ’ position. Switch C837 in middle position (contacts 5 - 3 a n d6-4c onnected). The s upply v oltage and the earth are now interrupted and the light does not work. 200332 ᓻ 3-86 5 CHANGES IN THE ELECTRICAL SYSTEM Changes in the electrical system from chassis number 0E608863 CF65/75/85 series |