2005 LOTUS ELISE ECU

If the battery is to be disconnected, the following precautions
should be taken: i) Ensure that all electrical loads (e.g. lights) are switched off. If
the car is fitted with security coded audio equipment, check
that the code is available for entering after battery reconnec
-
tion.
ii) Wait for at least ten seconds after switching off the ig-
nition to allow the engine management system to adjust the

setting of some components ready for re-starting.
iii) Ensure the alarm is disarmed. If the battery is disconnected
when armed, the alarm will be triggered.
iv) Disconnect the
negative (earth; black; ‘-’) battery cable first,
and re-connect last.
WARNING:
If the battery positive terminal is inadvertently earthed
(e.g. when using a spanner) whilst the negative terminal
is still connected, the resultant short circuit with heavy sparking and current flow could cause serious burns.
To remove the battery, pull off the breather pipe (if applicable),
release the single screw securing the clamp bracket at the
base of the battery, and manoeuvre the battery from the base
retaining shoe.
ohs145
Batter y clamp
Electrical
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WARNING:When lifting the battery out of, or into the car, be aware
of the considerable weight and take all appropriate precau
-
tions to safeguard personal health. Injury can result from improperly lifting the battery.
Keep the battery upright, and protect from sharp knocks
and shocks.
Reconnecting the Battery
WARNING: Failure to follow the correct battery re- connection pro
-
cedure detailed above could result in serious burns.
Refit the battery, with its terminals outboard, by reversing the
above procedure. Remember to push on the breather pipe (if
applicable), and reconnect the battery cables as detailed below.
Refit the battery cover.
i) Check again that all electrical loads are switched off.
ii) Connect the positive battery cable first, followed by the neg
-
ative (earth) cable.
iii) After reconnection, a change in the engine performance
characteristics may be noted for a period whilst the computer
controlled engine management system ‘re-learns’ some of its
settings.
iv) If necessary, enter the security code into audio equipment.
Battery Charging Under conditions of normal daily use, it should not be nec
-
essary to use external battery charging equipment. In a low usage regime, however, it is important to maintain the charge
state of the battery using a trickle charger, or an automatic bat
-
tery management conditioner such as that available through Lotus Dealers. Starting difficulties may be encountered after an
unattended period of 3 weeks. A battery conditioner is able to continuously monitor battery charge state and switch on and off automatically in order to maintain the battery in a fully charged
state without danger of damage through overcharging.
If the battery becomes discharged to the extent that the
car cannot be started, the recommended course of action is
to fit a substitute battery whilst the original battery is trickle
Electrical
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WARNING:Replacing a fuse with one which has a higher rating may
cause extensive damage to the electrical system and pos
-
sibly cause a fire. If a fuse of the correct rating is not avail
-
able, use one of a lower rating as a temporary measure.
Slot
Rate Circuit Slot Rate Circuit
1 20A Aux pwr socket 12 10A ABS 2 5A Reverse lamps 13 3A ECU Ignition
3 20A Driver’s window 14 20A Rad. fans;
4 20A Pass. window 1&2 slow, 1 fast 5 10A Stoplamps 15 7.5A Radio, switch6 7.5A Turn indicators pack module

7 10A Ignition services 16 10A Parking lamps
8 7.5A Battery services 17 10A Dip beam LH9 15A Hazard lamps 18 10A Dip beam RH
10 7.5A Horn 19 20A A.C. comp. relay,
11 10A Alarm pwr rad fan 2 fast interior lamp 20 15A Main beam LH
21 15A Main beam RH
22 7.5A CDL
m254a
MAIN FUSEBOX
Fuse 1Fuse 11
Fuse 12 Fuse 22
As viewed
from in front
Electrical
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Engine Compartment FusesFuses associated with the engine management system are
contained in two 4-position fuse holders located at the front of
the engine bay on the cabin bulkhead, adjacent to the engine ECM. To access the fuses, unclip rear edge of the cover.
Fuse Rating CircuitR1 20A Fuel pump
R2 3A Immobiliser
R3 5A Alternator sense
R4 5A ECU battery feed
R5 5A O2 heaters
R6 7.5A VSV's V VT, V VL, IAC
R7 10A Injectors, ignition coils
R8 5A Re-circ. pump
WARNING:
• To avoid injury, beware of rotating engine components and guard against entrapment of body parts, tools and
loose clothing.
• Stop engine before servicing fuses.
• Beware of hot surfaces in the engine bay. You could be seriously burned if you touch a hot engine part.
• Take great care not to drop flammable liquids or objects onto a hot engine and start a fire.
ohs136
ENGINE BAY FUSES
4
3
2
1
8
7
6
5
Electrical
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Footwell Sited Fuses Four fuses are secured to the main wiring harness just
ahead of the scuttle beam and accessible from the passenger
footwell.
Fuse Rating CircuitC1 20A Interior fan
C2 15A Wiper motor
C3 7.5A Audio key-in
C4 7.5A A.C. compressor
m248a
Front
Viewed
from
beneath Fusebox ‘C’Electrical
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- To adjust the high beam laterally, adjust the dome headed screw at the upper inboard side of the lamp, accessed from behind the lamp. Turn clockwise to adjust the beam to the
right.
- To adjust the vertical aim of the high beam, adjust the dome headed screw at the lower outboard side of the lamp, ac
-
cessed from behind the lamp. Turn clockwise to raise the
beam.
7. Repeat for the RH lamp. 8. Re-fit the cover/mask assemblies complete with edge seal to the body, and secure with the three socket head screws and
washers. Refit the wheelarch access panel.
m257
Vertical adjuster
Lateral adjuster Lateral adjuster
High beam lamp
Vertical adjuster
Low beam lamp
Electrical
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High beam bulb: Disconnect the two cables from the bulb, re-
lease the spring wire clip, and withdraw the 55W H7 bulb. On re
-
fitting, note that the bulb is keyed to allow only one orientation.
Parking lamp: Twist the bulb holder counterclockwise to release
from the main beam lamp, and withdraw the bayonet fitting T4
W bulb.
Front Turn Indicator Lamp Bulbs For access to the front turn indicator bulb, the lamp unit must
be released from the body. Using a suitable stiff rod or screw
-
driver blade inserted through the access hole in the outer top
corner of the air intake aperture, press back the lamp retaining
clip at the front end of the lamp, and withdraw the lamp from the body. Twist the bulb holder counterclockwise to release from the
lamp, and replace the bayonet fitting amber bulb. After replacing the bulb and holder, ensure the rubber seal
is correctly positioned around the lamp. Engage the tongue at
the rear end of the lamp unit with the body flange, and press the
front end of the lamp firmly down until a distinct ‘click’ is heard, indicating engagement of the retaining clip. Pull up on the front
end of the lamp to check security.
Side Repeater Lamp Bulbs The side mar ker lamps mounted on the front and rear
wheelarch lips, each use four longlife LEDs which are not serv
-
iceable. In case of failure, the lamp unit should be replaced by
your dealer.
ohs149
RELEASING FRONT TURN LAMP
Electrical
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Rear Lamp Cluster BulbsEach pair of rear lamps is configured as follows:
Outboard Lamp:
1 Outboard annulus; Tail and turn lamp 2 Central unit; Not used
3 Inboard annulus; Turn lamp
Inboard Lamp: 4 Outboard annulus; Stop lamp 5 Central unit; Reverse lamp
6 Inboard annulus; Stop and tail lamp
The bulbs for the rear lamps are accessible from within the
rear luggage compartment. Twist the bulbholder counterclock
-
wise to remove, replace the bayonet fitting bulb, and refit the bulbholder.
High Mounted Stoplamp The high mounted stoplamp, mounted beneath the rear
window shroud uses light emitting diodes (LED) for optimum
visibility. This is a self contained unit which may be replaced after releasing the two screws securing the housing to the body
and unplugging the harness connector.
ohs110
REAR LAMP CLUSTERS
1 2 3 4 5 6
Electrical
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