Land Rover Discovery Ii Valeo Bcu Ecu Manual

							 
 Single point entry: Single point entry is a function that allows the driver to unlock just 
the drivers door, thus leaving all the other doors in a locked state. It is an option that can 
be enabled using this setting. To use single point entry, press the unlock button on the 
remote transmitter once. Depressing the unlock button a second time in the space of one 
minute unlocks the remaining doors. Single point entry is also possible by turning the key 
in the drivers door lock to the unlock position, once. Turning the key to the unlock 
position again within one minute unlocks the remaining doors. It is also possible to use a 
combination of key and remote transmitters unlock signals to unlock all of the doors. 
 Speed lock option: This setting allows you to enable or disable the speed related locking. 
This feature, when enabled locks all the doors automatically when the vehicle speed 
exceeds 7 km/h (4 mph). The vehicle will unlock automatically when the ignition is 
switched off; providing the vehicle has been locked by the speed related locking function. 
Speed related locking only locks the vehicle once every journey/ignition cycle. If the 
doors are unlocked after the vehicle speed has exceeded 7 Km/h (4 mph), the vehicle will 
not lock under speed related locking until the ignition has been switched off and then 
back on again. If the unlock button on the fascia (CDL switch) is pressed it will disable 
the operation of speed related locking for the duration of the journey. 
 Mislock option: The Mislock sound alerts the driver to a failed attempt to lock the 
vehicle. This may be because one or more of the doors, bonnet or tail door is not 
correctly closed or the key is inserted into the ignition (any position). A Mislock 
condition will enable security functions only on the parts of the system that the BCU can 
verify as being reliable partially armed. The audible warning of a Mislock condition 
depends on the hardware fitted to the vehicle and on the current setting of the alarm 
sounder option setting. If a Mislock condition is detected and the Mislock sound is 
enabled in this setting, the programmed sounder will sound for 50 ms. Furthermore the 
BCU will not flash the hazard lights or operate the LED in a rapid flashing state when it 
detects the Mislock condition. 
 Bathrobe lock option: When bathrobe locking is enabled, the engine can then be started 
and then the vehicle locked with a spare key. This allows the vehicle interior to reach the 
desired temperature without the driver needing to be present. It should be noted that the 
vehicle security system is not set during this procedure; only the central door locking is 
activated. This feature is very desirable in cold countries. 
 Odometer Error warning: The BCU can be programmed to show an error if there is a 
difference between the odometer values stored in the BCU and the Instrument pack. 
Available options are: 
 The odometer will not flash if there is an odometer error (DISABLED). 
 The odometer will flash if there is an odometer error (ENABLED). 
 Key warning: If the key is left in the ignition and the driver door is open, a warning 
sound is generated. This can be disabled or enabled. 
  
						

							 
 Low battery warning: If this setting is set to enabled, the BCU will alert the driver of 
the vehicle if the remote transmitter battery requires replacing. The remote transmitter 
measures its battery voltage and when the voltage goes below a threshold it will transmit 
a special code to the BCU to request that it informs the driver by flashing the LED on-
off-on short flashes of 50mS and off for 2000mS. This is conditional upon the drivers 
door being open and the ignition in an off position, or the key removed from the 
ignition barrel. 
 Bulb failure: The BCU can be programmed to detect failure of one of the direction 
indicator bulbs, this setting allows the function to be enabled or disabled. 
INSTRUMENT PACK 
 Transmission: This configures the instrument pack for either Automatic or Manual 
vehicles, and then on the second choice, configure the BCU for either Automatic or 
Manual. 
 Engine: This sets the instrument pack for a Diesel or Petrol vehicle. 
 ACE: This configures the instrument pack to indicate the ACE lamp during initial bulb 
checking and during usage. 
 SLS: This configures the instrument pack to indicate the SLS lamp during initial bulb 
checking and during usage. 
 Gulf: This setting is used to configure the instrument pack for Gulf operation. Its 
operation on non Gulf specification instrument packs is unknown. 
 Police: This setting is used to configure the instrument pack for Police force vehicles. Its 
operation on non Police specification instrument packs is unknown. 
 HDC: This configures the instrument pack to indicate the HDC lamps during initial bulb 
checking and during usage. 
 TRC: This configures the instrument pack to indicate the electronic traction control lamp 
during initial bulb checking and during usage. 
ALARM-OTHER 
 Alarm: This setting allows for FITTED or NOT FITTED. 
 Alarm option: This setting allows the BCUs built in alarm to be turned off as if there 
were no alarm fitted. 
 Alarm disarm: This setting programs the effect that usage of the vehicles key has on 
disarming the alarm system. Options: 
 Operation of the key in the drivers door can always disarms the vehicle 
(ALWAYS). 
 Key only Operation of the key in the drivers door only disarms the vehicle if it 
was locked with the key (KEY ONLY). 
 The security system is not disarmed by the key (except via an EKA) (KEY 
NEVER).  
						

							 
 Alarm sounder: Depending upon the build specification of a vehicle it may have one of 
a small choice of sounders available for audible notification of events by the alarm. This 
setting allows the alarm sounder option to be configured to accommodate any of the fitted 
options either on their own or in conjunction with any other fitted sounder. The sounders 
which can be used are: 
 Battery backed sounder (BBS), located inside the exterior body panel near the 
fuel release solenoid, is a warning device for cases where the alarm is activated or 
the battery is disconnected. It has a self-contained power source, allowing it to 
operate when the vehicle battery is disconnected, or the unit is unplugged. The 
BBS will not sound if the battery is disconnected and the security system is not 
active. 
 Vehicle horn can either sound independently or using this setting can be 
programmed to work in conjunction with an alarm horn (if fitted) using the 
(BOTH) option. If the alarm is triggered, the vehicle horn operates at 250mS 
intervals, in phase with the hazard lamps. 
 Alarm Tamper: This setting is used to configure the alarm tamper detection notification 
via the security system LED. Available options are: 
 The security system LED does not flash when option the security system has been 
tampered with (DISABLED). 
 The security system LED flashes when the security system has been tampered 
with (ENABLED). 
 Engine immobile:  The engine immobilization status can be determined by the flashing 
status of the Security system LED. This LED has four different flash rates. These flash 
rates signal to the driver the different modes of operation or other system information. 
The four flash rates are: 
 Flash for 10 seconds at a rate of 10 Hz (50mS on, 50mS off). 
 Flash at a rate of 10 Hz (50mS on, 50mS off). 
 Flash until the system changes state at a rate of 50mS on, 2000mS off. 
 Flash on for 50mS, off for 50mS, on for 50mS and off for 2000mS. 
When the driver first locks the vehicle with either the key or the remote transmitter 
(assuming the vehicle does not Mislock), the LED will follow flash rate 1 (indicating the 
correct setting of the security system). After 10 seconds the system will follow flash rate 
3 (indication of security system being set). If the engine is immobilized but the alarm 
system is not set, the LED will signal the driver by following flash rate 3 (indicating the 
security system is set. If the vehicle is immobilized and the ignition is switch to position 
II, the LED will illuminate (to indicate that the engine will not start). It will extinguish 
only when the BCU receives a valid remobilize signal, or the ignition is switched to 
position 0 or I. If the alarm has triggered since the BCU received a valid arm signal, the  
						

							LED will follow flash rate 2. When the BCU receives an unlock signal (this indicates that 
the security system has been activated), the LED will follow flash rate 2 until the ignition 
is next turned to position II. The LED will flash one longer period if the EKA code 
sequence is started. 
 Passive immobile: When enabled with this setting, passive immobilization prevents the 
vehicle from being started unless a correctly programmed remote transmitter key is used 
to start the vehicle. This system works whether or not the driver sets the security system 
into an active state. The BCU immobilizes the engine 5 minutes after the ignition has 
been switched off, providing the driver’s door is not opened. The BCU will immobilize 
the engine 30 seconds after it detects the drivers door opening. Immobilization is 
achieved by the BCU not transmitting the code to the EMS ECU. This code is needed to 
allow the engine to continue to run after the initial start-up sequence. If the BCU or ECM 
is replaced, this code will require synchronization with the new unit. 
 Inertia switch: The inertia switch is located on the bulkhead under-bonnet. It is wired in 
series with the main relay. Whenever the inertia switch is tripped by a sudden 
deceleration of the vehicle (over and above the capacity of the braking system), the main 
power feed to the ECM will be interrupted. This action will stop the fuel pump and the 
engine by means of the ECM no longer operating the injectors. The vehicle will not 
restart until the inertia switch has been reset. When the inertia switch has been operated, 
this setting will affect if the hazards are turned on. Available options are: 
o Operation of the inertia switch does not operate the hazard indicators (NO 
HAZARDS). 
o Operation of the inertia switch does operate the (Hazards). 
 Hazard option: This setting configures the usage of the hazard lights by the BCU in 
respect of alarm usage. Available options are: 
 The hazards do not flash on security system arm disarm or trigger (DISABLED). 
 The hazards flash on security system trigger only (FITTED). 
 The hazards flash on security system arm, disarm and trigger (ALL). 
 Volumetric sensor: This option allows the volumetric protection system (detailed below) 
to be enabled or disabled and the BCU to be programmed to suit vehicles which do not 
have ultrasonic sensors fitted. 
Volumetric protection is a function that the vehicles security system employs to detect 
movement within the vehicles interior. It enhances the perimetric function by detecting 
situations where personal belongings are threatened by an intruder smashing a window. 
Volumetric protects by using two ultrasonic sensors to produce a sound pressure inside 
the vehicle. The sensors monitor the tone of the sound being reflected from interior trim 
panels and seats etc. If the sensor notes a change in tone, it indicates that something is 
moving within the interior of the vehicle. 
 
The BCU does not operate both volumetric sensors at the same time. If it did, the sensors 
would give unreliable detection. As a result, the two sensors within the vehicle interior 
communicate with each other. Both sensors use the wire used to inform the BCU that it 
has detected unauthorized movement within the vehicle, as a communication bus,  
						

							sending a signal to tell the other sensor that it is currently active. When the BCU provides 
power to both sensors, the first to operate sends a 5mS pulse along the signal wire to 
indicate that it has activated. After a period of 458mS the first sensor will switch off. The 
other sensor will, after a delay of 42mS, start to detect movement within the vehicle and 
also send the 5mS signal to declare that it is active along the signal wire. If one of the 
sensors detects movement when it is activated, it will provide a path to ground for the 
signal wire for a period of approximately 500mS. The BCU will interpret this lack of 
signal and activate the alarm components. The sensors continue to transfer operation 
between each other until the BCU removes their power. The two ultrasonic sensors 
become active after an initial delay of fifteen seconds, providing the vehicles security 
system has been set to activate volumetric sensing. This delay is incorporated into the 
BCU software to prevent spurious triggering events caused by air moving inside the 
vehicle interior. It is also possible to lock the vehicle without arming the volumetric 
alarm by using the key and Instructions to do this are held in the pages of the vehicles 
user manual. 
 
The same three conditions apply when trying to arm the vehicle in volumetric mode. 
These are: 
 The ignition must not be on, and the key must be removed from the ignition 
lock. 
 The inertia switch must not be active. 
 All of the doors must be closed, as well as both the front windows. 
 To unlock the vehicle and disable the security system, the unlock button on the 
remote transmitter must be pressed. If certain market configurations are set inside 
the BCU, it may not be possible to disengage the volumetric protection with the 
key. 
 Market: This code is used to identify the exact country for which the BCU is 
programmed. Every country has its own number and below is a list of the most common 
ones. If fitting a new BCU you should use the same code that was in the old one. 
 Australia - 21 
 Denmark - 89 
 Finland - 139 
 Netherlands - 350 
 Norway - 353 
 Sweden - 473 
 Italy - 228 
 Unknown 
 UK - 158 
 USA – 539 
 
  
						

							 
 EKA option: This setting allows configuration of the EKA facility and how its usage 
effects the central locking. Available options are: 
 EKA (emergency key access) is DISABLED. 
 EKA (emergency key access) is enabled and the door locks operate electrically 
(ENABLED). 
 EKA (emergency key access) is enabled, but the door locks do not operate 
electrically (NO UNLOCK). 
 Cruise control: This option is used if Cruise Control is fitted to the vehicle. 
 Air conditioning: This option is used if air conditioning is fitted to the vehicle. 
 Fuel burning heater: This option is used if a Fuel Burning Heater is fitted to the vehicle. 
 Passive coil: The Passive coil (where fitted) forms part of the passive engine 
immobilization and Passive engine remobilization system. Having been automatically 
immobilized after a time delay the BCU requires to see a code transmitted from the 
vehicles key fob before remobilizing the engine. If the driver has opened the door using 
the key, no code will have been transmitted, therefore whenever the ignition is first 
switched on, and the vehicle is in an immobilized state, the BCU powers the passive coil 
located around the ignition barrel. The passive coil produces a magnetic field, which 
excites the circuitry inside the remote transmitter. The transmitter then sends a 
remobilization signal to the BCU. If this system fails and the BCU does not receive a 
valid signal it will stop energizing the coil after one minute of operation. The driver of 
the vehicle will then need to either press the unlock button on the remote transmitter or 
enter the EKA code to remobilize the engine. Both engine immobilization and 
remobilization are totally transparent to the driver of the vehicle providing the system is 
operating correctly. 
 Transit mode: To prevent excessive battery drain during transportation of the vehicle 
after leaving the factory, a transit mode function has been built into the BCU. Enabling 
this mode disables the following functions/systems: 
 Volumetric sensors. 
 Passive immobilization will remobilize the engine on a valid unlock signal from 
the drivers door lock, regardless of the programmed market. 
 Immobilization of the vehicle by use of the door locks inputs. 
 Ignition key interlock. 
 Electric seat enable time-out with drivers door open. 
 Besides being able to enable or disable transit mode with this setting, the vehicle 
can also be removed from transit mode by simultaneously holding down the 
heated rear window and the rear fog lamp switches and turning the ignition switch 
from position 0 to position III for 2 seconds. 
 
 
  
						

							 
INFO 
 
 Serial No: This shows the serial number allocated to BCU. 
 Date: This shows the date of the BCU. 
 Hardware No: This shows the hardware number of the BCU. 
 Software No: This shows the software number of the BCU. 
 Alarm Type: This shows the version number allocated to the alarm specification of the 
BCU. The value is usually 10 but may be different in some countries, altering this 
number does not change the functionality of the alarm. 
 VIN: The vehicles VIN number, the first 3 digits are hard coded. (See Important note at 
top of section) 
 
 
 
This is a selection of functions and outputs that can be tested. Each output has the option ON and 
OFF in order to start and stop testing. The outputs for diesel engine (glow plug, etc.) can be 
tested only a diesel model. Also see if in the settings the output was disabled. BCU has control 
over the following features: 
OUTPUTS - BODY 
LIGHTS 
 Front Fog Lights 
 Rear Fog Lights 
Daytime Running lights 
 LH indicator enable 
 RH indicator enable 
 
WINDOWS 
 Front left window up 
 Front left window down 
 Front right window up 
 Front right window down 
 Rear windows enable 
 Sunroof enable 
 
 
 VALEO BCU (DISCO II) - Diagnostic Capabilities (Outputs)  
						

							 
WASH WIPE 
 Front wiper enable 
 Tail wiper enable 
 Head lamp power wash 
 
HEATED SCREEN 
 Heated screen 
 Heat. Rear screen lamp 
CHECK ENGINE 
 Check engine lamp 
 
OUTPUTS - SECURITY 
Security 
 Horn 
 BBUS ALL 
 BBUS ST 
 Fuel flap 
 Alarm LED 
 Ignition interlock 
 Crank Enable 
 Volumetric power 
 Robust immo. 
 Transponder Power 
LOCKING 
 Lock 
 Unlock 
 Superlock 
 Single point entry 
 
 
 
 
 
 
  
						

							 
 
 
 
KEY PROGRAM 6 DIGIT INNER CODE (Used on the Nanocom Evolution Mk 2) 
 
This function allows you to program one or more keys on the 4 slots available (the suspension 
plip is not used) by means of the 6 digit code printed on the label of the circuit inside the fob. 
The code must be written in the desired slot and confirmed with the corresponding button. We 
suggest using the first slot available. Once the code is inserted and confirmed the SYNC KEY 
function is required to synchronize the fob’s rolling code. 
 
KEY PROGRAM COMPLETE BAR CODE (not available on Nanocom Evolution Mk 2) 
This function allows you to program one or more keys on the 4 slots available (the suspension 
plip is not used) by means of the 18 digit bar code attached to the new keys. The code must be 
inserted without the first 2 and the last 2 digits that normally are “*” or “?” and confirmed with 
the Set button. We suggest using the first slot available. Once the code is inserted and confirmed 
we suggest that you perform the SYNC KEY function to synchronize the fob’s rolling code. 
 
SUSPENSION FOB 
Besides standard fobs the BCU can accept inputs from an accessories and optional extras fob 
which can be used to raise and lower the air suspension from outside the vehicle, this fob is 
designated as a SLABS fob and its bar code must be placed in the Suspension plip BAR CODE 
box only. 
 
 
 
 
This is a choice of functions that can be performed. 
 
RESET THE NEW FLAG 
 
RF TEST 
 
SYNC ODOMETER TO BCU 
 
SYNC BCU TO ODOMETER 
 
The stored odometer value can only be incremented and is displayed, as it is stored in kilometers.  
You cannot physically write a value to the BCU or the Instrument pack. 
IMPORTANT NOTE. If the BCU is replaced and the mileage value in the replacement is 
higher than the one shown in the Instrument pack, then using the Sync BCU to Odometer 
function will result in having the higher value mileage shown in the vehicle.  
VALEO BCU (DISCO II) - Diagnostic Capabilities (KEY PROGRAMMING) 
There are 2 methods of Key programming. Please select the one relevant to the type of 
Nanocom unit you have. 
BCU (Discovery II) - Diagnostic Capabilities (UTILITY)  
						

							If the odometer error setting is enabled in the settings section the display will also flash when the 
BCU odometer value is different to the IP (instrument pack) odometer value.  
 
EKA CODE - READ - SET 
This is a four digit code, each digit of the EKA code can be between 1 and 16.