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Land Rover Discovery Ii Valeo Bcu Ecu Manual

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    Page 1 The heart of the Discovery series 2 The Valeo BCU has been custom produced for this application and takes care of nearly everything not catered for by independent systems. There are actually different versions with slightly different capabilities and functionality, however this is handled totally transparently and cleverly with capability that has been built in that allows settings to be crossed from one ECU version to another. Vehicle makes models and variants known or believed to be...
    Page 2 Real time live display of the information the electronic control unit of the selected vehicle system is currently deriving from its input sensors. BODY 1 LIGHTS  Sidelights: The sidelights input are used by the BCU to give, amongst other things a lights left on warning sound.  Main beam: When the lighting switch is moved to the flash or main position, the feed from fusible link 10 in the engine compartment fuse box passes through the switch contacts. The feed is connected to the passenger...
    Page 3 has been made. The BCU then sends a signal to the IDM in the passenger compartment fuse box. The signal is received by the IDM and interpreted as a request for hazard warning lamp operation. The IDM grants an earth path for the coils of the LH and RH direction indicator relays. The IDM controls the flasher operation by momentarily removing and restoring the earth for the relay coils, which opens and closes the contacts causing the indicator bulbs to flash on and off. The resistor is used by the IDM...
    Page 4  Transfer box neutral: This is the supply voltage as measured by the BCU at its transistor switching circuit stages located within the BCU itself.  Park/neutral: BODY 2 TRANSMISSION  Reverse idle: The status of the reverse switch input. When reverse gear is selected, a feed from fuse 25 in the passenger compartment fuse box is connected on a GY wire to the reverse lamp switch (manual transmission) or the starter inhibitor/reverse lamp switch (automatic transmission).  Transfer neutral...
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