Lotus Elise S1 Service Notes page 362

I Lotus Service Notes
Section JH
Buzzer sounds? (NO).
e). Set up is okay.
f). If adjustment is required, remove the two circular plastic pieces holding the unit together, and separate
the two halves of the case. Turn the adjuster screw (top left hand corner) as required, and repeat the test.
Note: If the sensor detects an intrusion during the first 15 seconds after alarm arming, the inhibition
period continues until 15 seconds elapses without the unit detecting an intrusion. Subsequent intrusions
will not be detected for 4 seconds after the buzzer sounds.
5. Battery Back-Up/Siren Test:
a). Disarm the system before disconnecting the negative battery cable.
Alarm triggered.
b). Turn the siren off with the alarm override key.
c). Reconnect the battery and turn the siren back on (siren will sound).
d). Disarm the system with the transmitter red button (press twice for 1 full second each time).
6. Passive Immobilisation:
a). Disarm the system.
b). Start the engine and then turn off ignition. Wait for 60 seconds.
Two short flashes and buzzes? (YES). Correct microwave
c). Try to start engine. adjustment
Engine immobilised? (YES).
d). Press once the transmitter red button.
e). Try to start the engine.
Engine starts? (YES).
7. Emergency Override Key:
a). Arm the system and wait for 40 seconds.
b). Open the passenger door.
Alarm triggered? (YES). r^oel
c). Turn off the siren with the override key.
d). Try to start engine.
Engine immobilised? (YES).
e). Switch on ignition.
f). Apply immobiliser touch key to socket on steering column shroud.
g). Try to start engine.
Engine starts? (YES).
h). Stop engine.
i). Turn siren on with the override key (siren will sound), and disarm the system with the transmitter key
(press the red button twice for 1 full second each time).
Transmitter Battery Replacement: Each of the transmitter keys is powered by a 12V battery type GP23. With
normal use, these should last between 6 and 9 months. To ensure continuity of trouble free operation, it is
recommended to replace both batteries at 6 monthly intervals:
1. Split the transmitter case using a finger nail or blade in the indent provided in the case jointline.
2. Pull out the battery and insert the new, taking care to match the polarity marking.
3. Snap the case halves together.
Component Location: The central processor unit (CPU) is mounted behind the passenger side fascia on the
chassis scuttle beam, with the aerial routed alongside the harness. The buzzer unit is mounted alongside the
CPU, stuck to the top surface of the beam by a self adhesive pad. Access to the CPU and buzzer unit is
available after removing the passenger side dash panels - see sub-section BN.12.
The siren, including the override keyswitch, is fixed to the top of the passenger footwell, and the immobi-
liser module is mounted to the rear of the engine management ECM on the electrical services plate at the left
hand side of the rear luggage compartment, protected by a rivetted cover. The microwave sensor is secured
to the cabin rear bulkhead, between the seats.
Note that the Lucas 5AS module is still used as with the base alarm system, in order to communicate with
the engine management ECM. The 5AS module is mounted behind the fascia on the steering column upper
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