Please Help!!! Freelander keeps going dead

Discussion in 'Freelander Forum' started by SeMachiPrincess, Aug 7, 2016.

  1. SeMachiPrincess

    SeMachiPrincess New Member

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    Hello. Hi everyone...
    I have a 2002 Land Rover Freelander 2.5 v6 and it keeps going dead. With a hot battery I can drive for atleast an hour with no problem as long as I dont use the lights or the A/C. If I do the transmission will stop changing out, all the dash lights will come on(SRS, ABS, Battery light, TC light) then I will have to press the petal much harder in order to get the car to move forward. Then the dash will start flashing F4. If I continue to drive with this flashing, eventually all the lights will cut off and the needles will stop working(basically the dash just stops working completly). I replaced the battery and alternator even though Autozone said they both were good. Still have the same problem. I even can take the battery poses off while the truck is running and it wont cut off. To see if the alternator was charging, i took out the hot battery while it was running and put in a REALLY dead battery and it charged it. I crunk it up and switched it off a few times with no problems. Then as soon as I tried to go down the street F4 and the other lights popped on and I barely made it back to my drive way. Once again the dash completely cut off and the car went dead sitting in the drive way and wouldn't crank up again. It was about to rain so I tried to let the windows up and everytime I pushed the buttons the car was making clicking sounds. I also have replace the battery 150 AMG fuse and tested other fuses to make sure they were getting power, and they were. The only thing I see that could possibly be the problem is a very small fuse box coming from the wire on the positive terminal with about 3 fuses in it.(they are definitely getting no power) Connected to it is another box about the same size with a yellow relay in it.(witch is definitely getting power) The wires are running from the positive battery pose to these two boxes. Then from the boxes to somewhere inside the truck. Tried to follow them but couldn't....PLEASE HELP. idk whats going on.
     
  2. Stewmeat2

    Stewmeat2 Member

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    Charging
    Alternator
    The battery (C0192) provides a permanent feed to the alternator (C0183) via the starter
    motor (C0631) on an R then N wire. Fuse 19 of the passenger compartment fuse box
    (C0581) provides an ignition feed to the alternator (C0226) on a W then GN wire.
    When the engine is turned over, the alternator (C0226) supplies the ECM (C0606) a Pulse
    Width Modulated (PWM) signal on a U wire. The ECM uses this PWM signal to calculate the
    electrical load on the alternator, and controls engine idle speed accordingly.
    When the engine is started, the magnetised rotor within the stator windings generate 3
    phase alternating current (ac) and voltage that rises rapidly with rotor speed. The field
    diodes in the rectifier pack convert the ac current into direct current (dc). Output current from
    the field diodes supplements the initial current flowing through the field windings. This
    causes an increase in the magnetic influence of the rotor, resulting in self-exitation of the
    alternator. The field current increases with rotor speed and thus increases the generated
    current and voltage until the alternator is fully excited. The alternator (C0183) charges the
    battery (C0192) by providing current on an N then R wire.
    Ignition/No charge Warning Lamp
    Fuse 8 of the passenger compartment fuse box (C0589) provides an ignition feed to the
    ignition/no charge warning lamp (C0233) on a G wire. Illumination of the warning lamp
    (C0233) is controlled by the ECM (C0331) on an NY wire.
    Charging
    The charging system comprises a battery and an alternator. The battery must be of a
    sufficient capacity to operate the starter motor and operate various electrical systems in the
    vehicle. The alternator charges the battery when the engine is running and increases its
    output as demand on the battery increases.
    The instrument pack incorporates a charge warning lamp which illuminates when there is no
    output or a low output from the alternator. For a detailed description of the charging and
    starting system, refer to the Engine Management Systems – MEMS section of the System
    Description and Operation Workshop manual.
    OPERATION
    General
    Feed from the positive battery terminal (C0192) is supplied to fusible link 1, fusible link 3,
    fuse 10 and the main relay (C0632) on an R wire. All are located within the engine
    compartment fuse box. The battery (C0192) also provides a feed to the starter motor
    solenoid (C0178) on an R wire.
    Fusible link 1 is connected in series with fusible link 7, which is also located within the engine
    compartment fuse box.
    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 6, fuse 8, and fuse 19 of the passenger compartment fuse box (C0588) on a G wire.
    When the ignition switch is turned to the 'crank' position, current flows across the switch
    (C0028) to fuse 5 of the passenger compartment fuse box (C0588) on a WR wire.
     
  3. Stewmeat2

    Stewmeat2 Member

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    CHARGING AND STARTING – KV6
    The charging system comprises a battery and an alternator. The battery must be of a
    sufficient capacity to operate the starter motor and operate various electrical systems in the
    vehicle. The alternator charges the battery when the engine is running and increases its
    output as demand on the battery increases.
    The instrument pack incorporates a charge warning lamp which illuminates when there is no
    output or a low output from the alternator. For a detailed description of the charging and
    starting system, refer to the Engine Management Systems – Siemens (All Except NAS)
    section of the System Description and Operation Workshop manual.

    OPERATION
    General
    Feed from the positive battery terminal (C0192) is supplied to fusible link 1, fusible link 3,
    fuse 10, and the main relay (C0632) on an R wire. All are located in the engine compartment
    fuse box. The battery (C0192) also provides a feed to the starter motor solenoid (C0178) on
    an R wire.
    Fusible link 1 is connected in series with fusible link 7, which is also located in the engine
    compartment fuse box.
    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 6, fuse 8, and fuse 19 of the passenger compartment fuse box (C0588) on a G wire.
    When the ignition switch is turned to the 'crank' position, current flows across the switch
    (C0028) to fuse 5 of the passenger compartment fuse box (C0588) on a WR wire.

    Charging
    Alternator
    Fusible link 1 of the engine compartment fuse box (C0826) provides a constant battery feed
    to the alternator (C0183) on an R wire. Fuse 19 of the passenger compartment fuse box
    (C0581) provides an ignition feed to the alternator (C0053) on a W wire.
    When the engine is turned over, the alternator (C0053) supplies the ECM (C0371) with a
    Pulse Width Modulated (PWM) signal on a GK wire. The ECM uses this PWM signal to
    calculate the electrical load on the alternator, and controls engine idle speed accordingly.
    When the engine is started, the magnetised rotor within the stator windings generate 3
    phase alternating current (ac) and voltage that rises rapidly with rotor speed. The field
    diodes in the rectifier pack convert the ac current into direct current (dc). Output current from
    the field diodes supplements the initial current flowing through the field windings. This
    causes an increase in the magnetic influence of the rotor, resulting in self-exitation of the
    alternator. The field current increases with rotor speed and thus increases the generated
    current and voltage until the alternator is fully excited.
    The alternator (C0183) charges the battery by providing current via fusible link 1 of the
    engine compartment fuse box (C0826 & C0632) to the battery positive terminal (C0192) on
    an R wire.
    Ignition/No Charge Warning Lamp
    Fuse 8 of the passenger compartment fuse box (C0589) provides an ignition feed to the
    ignition/no charge warning lamp (C0233) on a G wire. Current flows across the lamp
    (C0233) and is provided an earth path by the alternator (C0053) on an NY wire. The warning
    lamp will now illuminate.
    When the alternator is charging, it provides a feed to the warning lamp (C0233) on the NY
    wire. Because the potential difference across the bulb is 0 V, the lamp will now extinguish.
     

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