Lotus Esprit Series - Lumenition Distributor; To Test the Complete System; To Test the Power Module (and Coil)

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Page E54
LUMENITION DISTRIBUTOR
The 'Lumenition distributor'
is basicall
y
o Lucos distributor with the contact breaker and
condenser replaced by an lnfra
- red Sensor Unit (A907E6331F) arid o four bladed interrupter
fitted in
place of the contact breaker. A solid state power module (A075M0335F) is fitted
on the rear RH wheelarch or RH body reinforcing channel in the rear compartment.
Before commencing the following tests remove the centre EHT lead to the distributor and
secure it in a position
12mm (4 inch) from the engine costing. Remove the distributor cap
and check
an interrupter blade is riot covering the optical switch lamp. Switch on the
ignition and proceed as follows:
1.
To Test the Complete System.
(a)
Protect the exposed top of the distributor from
strong sunlight.
ILI W--- -ye-- -4 -.,.+--:-l k-h.,--m +L- le---. A+ bh~ --+:--l ...,;+-h --A
,-,
. . .. .
~'
. ,~ . ., . - . . . . . . . . . . . . . . . .
- # .- - "- - ' -
a spark should be observed between the EHT lead and the engine casting.
2.
To Test the Power Module (and coil).
(a)
Uriplug ttie 3
- way connector leading to the distributor.
(b)
Coririect the red wire in ttie Connector to the blue wire to the power module
using a piece of wire. Brake the wire connection.
A spark should be
produced between ttie
EHT lead and the engine casting.
If no spark is produced, suspect the power module. If weak spark is
produced suspect the coil.
3.
To Test the Optical Switch.
NOTE: The optical switch must be connected to a good power module.
(a)
Connect a voltmeter between
the blue ond black wires to the 3 - way connector
(b)
Check a voltage of approx.
1.8 volts is produced when the irifra - red beam is
not interrupted.
(c)
When the beam is interrupted using o piece of opaque moterial the voltage
drops to
0.3 v01 ts.
ESPRIT
Issue 12/78