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Land Rover Freelander 2003my Electrical Library Rover Manual

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    							DESCRIPTION AND OPERATION
    4.96FREELANDER 03MY
    HEATED FRONT SCREEN (HFS)
    DESCRIPTION
    General
    The Heated Front Screen (HFS) consists of two heater elements which are embedded into 
    the LH and RH sides of the windscreen. Two connectors at the base of the windscreen 
    provide the power feed and an integral earth for each of the heater elements.
    Operation of the HFS is controlled by the CCU and a non latching switch on the centre 
    console. The switch contains an LED which illuminates while the HFS is on. The CCU de-
    energises the HFS relay after approximately 5 minutes, when the switch is pressed again or 
    if the engine stops.
    OPERATION
    General
    Feed from the positive battery terminal (C0192) is supplied to fusible link 3 of the engine 
    compartment fuse box (C0632) on an R wire and the Heated Front Screen (HFS) relay 
    (C0994) on an N wire.
    Fusible link 3 (C0571) provides a constant battery feed to the ignition switch (C0028) on an 
    N wire. When the ignition switch is turned to the ignition position, current flows across the 
    switch (C0028) to fuse 8 of the passenger compartment fuse box (C0588) on a G wire. Fuse 
    8 provides an ignition feed to the CCU (C0593), which is mounted on the rear of the 
    passenger compartment fuse box. The CCU (C0593) is earthed via the passenger 
    compartment fuse box (C0587) on a B wire.
    HFS Relay
    The battery (C0192) provides a constant battery feed to the HFS relay coil (C0994) on an N 
    wire. The earth path for the relay coil (C0994) is controlled by the CCU (C0429) on an SB 
    wire.
    The CCU will only provide an earth path for the HFS relay coil if all of the following are 
    present:
    zThe ignition is on.
    zThe engine is running.
    zThe HFS switch is pressed.
    The CCU (C0592) monitors the condition of the oil pressure switch (C0187) on a WN wire. 
    The oil pressure switch contacts are closed when there is no oil pressure. When the engine 
    is started, the rise in oil pressure causes the switch contacts to open. 
    						
    							DESCRIPTION AND OPERATION
    FREELANDER 03MY 4.97
    HFS Switch
    The CCU (C0429) monitors the condition of the HFS switch (C0131) by providing a feed on 
    a KO wire. When the switch is pressed the CCU senses the momentary earth path, and 
    (providing all other conditions are met) energises the HFS relay. The switch (C0131) is 
    earthed on a B wire.
    HFS Elements
    The energised HFS relay (C0994) provides a feed to fuse A and fuse B (C1860) on a pair of 
    NW wires. Fuse A (C1860) provides a feed to the LH screen element (C0247) on a PS wire. 
    Fuse B (C1860) provides a feed to the RH screen element (C0246) on a PK wire (PW on 
    vehicles from 03MY).
    The energised HFS relay (C0994) also provides a feed to fuse C (C1860) on an NW wire. 
    Fuse C (C1860) provides a feed to the HFS switch tell-tale LED (C0131) on a PK wire. The 
    LED (C0131) is earthed on a B wire. 
    						
    							DESCRIPTION AND OPERATION
    4.98FREELANDER 03MY
    WIPERS AND WASHERS
    DESCRIPTION
    Front
    Wipers
    Operation of the windscreen wipers is controlled by the Central Control Unit (CCU). There 
    are four modes of wiper operation. These are selectable from the RH column stalk when the 
    ignition switch is in the ignition position.
    NOTE: Windscreen wiper operation is temporarily suspended while the engine in cranking.
    The modes of windscreen wiper operation are:
    zSlow wipe.
    zFast wipe.
    zIntermittent wipe.
    zFlick wipe.
    Washers
    The windscreen washer jets are controlled by the CCU and are operated by pulling the RH 
    column stalk back against spring pressure. When the washer jets are operated, the 
    windscreen wipers will start operating at slow speed after a delay of approximately 0.6 
    seconds. The wipers will continue to operate at slow speed until approximately 2 seconds 
    after the RH wiper stalk is released.
    Rear
    Wiper
    The rear wiper is switched on and off by pressing the switch mounted on the RH side of the 
    instrument pack. The rear wiper is controlled by the Central Control Unit (CCU) and will only 
    operate when the ignition switch is in the ignition position.
    NOTE: Rear wiper operation will NOT be suspended while the engine is cranking.
    The rear wiper will stop operating and return to its park position if any of the following occur:
    zThe tail door is opened.
    zThe tail door window is opened.
    zThe roof is removed (3 door vehicles only).
    If the windscreen wipers are in operation and reverse gear is selected, the rear wiper will 
    automatically operate at slow speed, irrespective of rear wiper switch position. The rear 
    wiper will stop operating when reverse gear is de-selected. 
    						
    							DESCRIPTION AND OPERATION
    FREELANDER 03MY 4.99
    Washer
    The rear washer is operated by pressing the non-latching switch mounted on the RH side of 
    the instrument pack. The washer will operate until the switch is released.
    The rear wiper will start operating at slow speed as soon as the washer switch is depressed, 
    and will continue to operate at slow speed for approximately 6 seconds after the switch is 
    released.
    OPERATION
    Front
    General
    Feed from the positive battery terminal (C0192) is supplied to fusible link 3 of the engine 
    compartment fuse box (C0632) on an R wire. Fusible link 3 (C0571) is connected to the 
    ignition switch (C0028) by an N wire. When the ignition switch is turned to the ignition 
    position, current flows across the switch (C0028) to fuse 8 (C0588) on a G wire, and fuse 3 
    (C0588) on an NW wire. Both are located in the passenger compartment fuse box. 
    Fuse 8 and fuse 3 (C0593) both provide an ignition feed to the front wiper relay contained 
    within the Central Control Unit (CCU). The CCU (C0593) is earthed via the passenger 
    compartment fuse box (C0587) on a B wire.
    Intermittent Wipe
    Fuse 3 of the passenger compartment fuse box (C0580) provides an ignition feed to the 
    wiper switch (C0035) on an LG wire, and the variable wipe potentiometer (C0320) on a GY 
    wire. When the wiper switch is moved to the intermittent wipe position, current flows across 
    the switch (C0035) to the CCU (C0428) on a G wire.
    The variable wipe potentiometer has 5 pre-set positions. The potentiometer (C0320) is 
    connected to the CCU (C0429) by a WK wire. The voltage supplied to the CCU by the 
    potentiometer is dependent upon its position. The CCU is able to determine the amount of 
    delay to apply to the wipers by measuring the voltage provided on the WK wire.
    When the CCU receives a feed from the intermittent wipe switch and the potentiometer, it 
    provides an intermittent feed back to the wiper switch (C0035) on a LGK wire. The wiper 
    switch (C0035) is connected to the wiper motor (C0030) by a ULG wire. Current flows across 
    the motor slow speed windings and is earthed (C0030) on a B wire.
    Slow Wipe
    Fuse 3 of the passenger compartment fuse box (C0580) provides an ignition feed to the 
    wiper switch (C0035) on a G wire. When the wiper switch is moved to the slow wipe position, 
    current flows across the switch (C0035) to the wiper motor (C0030) on a ULG wire. Current 
    flows across the motor slow speed windings and is earthed (C0030) on a B wire.  
    						
    							DESCRIPTION AND OPERATION
    4.100FREELANDER 03MY
    Fast Wipe
    Fuse 3 of the passenger compartment fuse box (C0580) provides an ignition feed to the 
    wiper switch (C0035) on a G wire. When the wiper switch is moved to the fast wipe position, 
    current flows across the switch (C0035) to the wiper motor (C0030) on a RG wire. Current 
    flows across the motor fast speed windings and is earthed (C0030) on a B wire. 
    Park
    Fuse 3 of the passenger compartment fuse box (C0582) provides an ignition feed to the 
    wiper motor park switch (C0030) on an LG wire. The park switch is closed with the wipers in 
    any position other then the park position.
    When the wipers are turned off, current flows across the park switch (C0030) to the CCU 
    (C0430) on an NLG wire. The CCU (C0430) is connected to the wiper switch (C0035) by an 
    LGK wire. The wiper switch (C0035) provides a feed to the wiper motor (C0040) on a ULG 
    wire. Current flows across the motor slow speed windings and is earthed (C0030) on a B 
    wire. When the wipers reach the park position, the switch contacts open and power to the 
    wiper motor is cut.
    Washers
    Fuse 3 of the passenger compartment fuse box (C0580) provides an ignition feed to the 
    washer switch (C0035) on an LG wire. When the RH column stalk is pulled back against 
    spring pressure, current flows across the switch (C0035) to the washer pump (C0008) on a 
    LGB wire. The washer pump (C0008) is earthed on a B wire.
    The washer switch (C0035) also provides a feed to the CCU (C0428) on an LGB wire. When 
    the CCU receives this feed, it initiates its programmed wash/wipe function.
    Rear
    General
    Feed from the positive battery terminal (C0192) is provided to fusible link 3, and fusible link 
    4 of the engine compartment fuse box (C0632) on an R wire. Fusible link 4 (C0574) is 
    connected to fuse 30 and fuse 14 of the passenger compartment fuse box (C0587) by an 
    NW wire. Fuse 30 (C0583) provides a constant battery feed to the rear wiper relay (C0124) 
    on a PR wire. Fuse 14 (C0583) provides a constant battery feed to the Roof On switch 
    (C0497) on a P wire.
    Fusible link 3 (C0571) is connected to the ignition switch (C0028) by an N wire. When the 
    ignition switch is turned to the ignition position, current flows across the switch (C0028) to 
    fuse 1 of the passenger compartment fuse box (C0588) on an NW wire. The ignition switch 
    (C0028) also provides a feed to fuse 8 of the passenger compartment fuse box (C0588) on 
    a G wire. 
    						
    							DESCRIPTION AND OPERATION
    FREELANDER 03MY 4.101
    Wiper
    The CCU (C0592) monitors the condition of the wiper switch (C0079) by providing a feed via 
    the passenger compartment fuse box (C0589) on an RG wire. When the switch is pressed, 
    current flows across the switch contacts (C0079) to earth on a B wire. When the CCU 
    registers this earth, it provides a feed to the rear wiper relay (C0124) on a YB wire. The rear 
    wiper relay contains two independent relays; a forward relay and a reverse relay. 
    The energised forward relay (C0124) is now able to provide a feed to the wiper motor 
    (C0388) on a GR wire. Current flows across the motor windings (C0388) and back to the 
    rear wiper relay (C0124) on a G wire.
    To move the wiper back, the CCU (C0429) removes the feed to the wiper relay on a YB wire 
    and provides a feed on a YW wire. This feed energises the reverse relay, which is earthed 
    on a B wire.
    The energised reverse relay (C0124) is now able to provide a feed to the wiper motor 
    (C0388) on a G wire. Current flows across the motor windings (C0388) and back to the rear 
    wiper relay (C0124) on a GR wire.
    Off-Screen Park
    The CCU (C0428) monitors the off-screen park function of the rear wiper (C0388) by 
    providing a signal feed on OB and NG wires. For more information on the off-screen park 
    function, refer to the  Wipers and Washers  section of the Workshop manual.
    Tail Door Window Lift
    The rear wiper will not operate if the tail door glass is not in the fully closed position. If the 
    tail door window is open. The CCU (C0428) monitors the condition of the tail door window 
    via the tail door window switch (C0354) on BR and BK wires. The switch (C0354) is earthed 
    on a B wire.
    For more information on tail door window operation, refer to the  Windows  section of this 
    manual.
     
    +  WINDOWS. 
    Washer
    Fuse 1 of the passenger compartment fuse box (C0589) provides an ignition feed to the 
    washer switch (C0073) on a GY wire. When the switch is depressed, current flows across 
    the switch contacts (C0073) to the washer pump relay (C0936) and the CCU (C0428) on GB 
    wires.  
    						
    							DESCRIPTION AND OPERATION
    4.102FREELANDER 03MY
    When the CCU receives this feed, it initiates its programmed wash/wipe function, and 
    provides a feed to the rear wiper relay (C0124) on a YB wire. The rear wiper relay operates 
    the rear wiper as described above.
    The rear wiper relay (C0124) also provides a feed to the washer pump relay (C0936) on a 
    GR wire. This energises the washer pump relay, which is earthed on a B wire. The energised 
    washer pump relay (C0936) provides a feed to the washer pump (C0021) on a GB wire. The 
    pump (C0021) is earthed on a B wire.
    Tail Door Switch
    The CCU (C0428) monitors the condition of the tail door switch (C0616) by providing a feed 
    on a BO wire. The tail door switch is open circuit when the tail door is closed. When the tail 
    door is opened, the switch contacts close and an earth path is created on a B wire. Sensing 
    this earth path, the CCU suspends operation of the rear wiper.
    Roof On Switch (3 Door Vehicles Only)
    Fuse 14 of the passenger compartment fuse box (C0583) provides a constant battery feed 
    to the roof on switch (C0497) on a P wire. The roof on switch is closed when the hard back 
    is fitted, or the soft back is in the fitted position. In this instance, current flows across the 
    switch (C0497) to the CCU (C0428) on a PY wire.
    If the hard back is removed (or the soft back is folded down) the roof on switch becomes 
    open circuit, and the feed to the CCU is removed. When the CCU registers this, it suspends 
    operation of the rear wiper. 
    						
    							DESCRIPTION AND OPERATION
    FREELANDER 03MY 4.103
    BRAKE AND REVERSE LAMPS
    DESCRIPTION
    Brake Lamps
    Three brake lamps are fitted to the rear of the vehicle. Two brake lamps are mounted above 
    the rear bumper, and share a dual filament bulb with the tail lamps. A third, high mounted 
    tail lamp is housed within a casting mounted on the tail door above the spare wheel.
    NOTE: NAS vehicles are also fitted with a second pair of brake lamp bulbs. These operate 
    in conjunction with the normal brake lamp bulbs. These secondary bulbs are also used as 
    fog lamps. For more information of fog lamp operation, refer to the Fog Lamps section of 
    this manual.
     
    +  FOG LAMPS. 
    The brake lamps are operated by the brake pedal switch, which is mounted on the pedal 
    box, and will only operate when the ignition switch is in the ignition position.
    The brake lamps will also operate without operation of the brake pedal. If Hill Descent 
    Control (HDC) is engaged, ABS ECU will operate the brake lamps, responding from signals 
    from the ABS modulator.
    For more details of HDC, refer to the  Brakes  section of the Workshop manual. For more 
    information on ABS operation, refer to the  Anti-lock Braking System (ABS) section of this 
    manual.
     
    +  ANTI-LOCK BRAKING SYSTEM (ABS). 
    Reverse Lamps
    The reverse lamps are incorporated into the tail lamp units, and will only operate when the 
    ignition switch is in the ignition position, and reverse gear is selected.
    OPERATION
    General
    Feed from the positive battery terminal (C0192) is supplied to fusible link 3 of the engine 
    compartment fuse box (C0632) on an R wire. Fusible link 3 (C0571) is connected to the 
    ignition switch (C0028) by an N wire. When the ignition switch is turned to the ignition 
    position, current flows across the switch (C0028) to fuse 2 of the passenger compartment 
    fuse box (C0588) on an NW wire.  
    						
    							DESCRIPTION AND OPERATION
    4.104FREELANDER 03MY
    Fuse 2 (C0580) provides an ignition feed to the following on G wires:
    zThe reverse lamp relay (C0935) (automatic transmission vehicles only).
    zThe brake pedal switch (C0075).
    Fuse 2 (C0581) also provides an ignition feed to the reverse lamp switch (C0163) (K1.8 and 
    Td4 manual transmission vehicles only) on a G wire.
    Brake Lamps
    The brake pedal switch (C0075) is provided an ignition feed from fuse 2 of the passenger 
    compartment fuse box (C0580) on a G wire. When the brake pedal is pressed, current flows 
    across the switch (C0075) to the following on GP wires:
    zThe RH brake lamp (C0125).
    zThe RH brake lamp (C0489) (NAS vehicles only).
    zThe LH brake lamp (C0121).
    zThe LH brake lamp (C0490) (NAS vehicles only).
    zThe Centre High Mounted Stop Lamp (CHMSL) (C0613).
    zThe trailer pick-up (C0499) (GP then R wire).
    zThe ABS ECU (C0501).
    All brake lamps are earthed on a B wire. The trailer pick-up is earthed on a W then B wire
    NOTE: The brake pedal switch (C0075) provides a second feed to the ABS ECU on a GR 
    wire. For more information on ABS operation, refer to the Anti-lock Braking System (ABS) 
    section of this manual.
     
    +  ANTI-LOCK BRAKING SYSTEM (ABS). 
    Reverse Lamps
    Manual Transmission
    Fuse 2 of the passenger compartment fuse box (C0581) provides an ignition feed to the 
    reverse lamp switch (C0163) on a G wire. When reverse gear is selected, current flows 
    across the switch (C0166 on K1.8 vehicles, C0163 on Td4 vehicles) to the RH (C0455) and 
    LH (C0472) reverse lamps on GN wires. Both lamps are earthed on B wires. 
    						
    							DESCRIPTION AND OPERATION
    FREELANDER 03MY 4.105
    Automatic Transmission
    Fuse 2 of the passenger compartment fuse box (C0580) provides an ignition feed to the 
    reverse lamp relay (C0935) on a G wire. When reverse gear is selected, the Electronic 
    Automatic Transmission (EAT) ECU (C0932) provides a feed to the reverse lamp relay coil 
    (C0935) on an NG wire. The relay coil (C0935) is earthed on a B wire. The energised reverse 
    lamp relay (C0935) is now able to provide a feed to the RH (C0455) and LH (C0472) reverse 
    lamps on GN wires. Both lamps are earthed on B wires.
    For more information on EAT operation, refer to the  Electronic Automatic Transmission 
    (EAT) section of this manual.
     
    +  ELECTRONIC AUTOMATIC TRANSMISSION (EAT).  
    						
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