Wheel Speed Sensors; Data Link Connector (Dlc); Special Tools; Lotus Techcentre - Lotus Evora Service Notes

Lotus Service Notes
JL.13 - WHEEL SPEED SENSORS
A 48 pole vehicle speed sensor ring is integrated into the hub inboard grease seal, the signal from which is
read by a sensor inserted into the rear of the hub carrier and retained by a single button head socket screw.
Wheel speed data is supplied to the ABS control module, which uses the information to modulate brake
system pressures, and also outputs a road speed signal to the engine ECM, and to the instrument pack for
speedometer operation. Output from each wheelspeed sensor can be checked using the Lotus TechCentre.
JL.14 - DATA LINK CONNECTOR (DLC)
The Data Link Connector (DLC) is a 16 terminal electrical connector plug, complying with SAE J 1962,
which provides a means of communication with the ABS and engine management electronic control units. The
connector is used in service to connect electronic diagnostic equipment such as the 'Lotus TechCentre' tool
which allows system interrogation including the reading of trouble codes.
The DLC is located on the back of the scuttle crossbeam above the outboard side of the driver's
footwell.
JL.15 - SPECIAL TOOLS

Lotus TechCentre

Can Bus Diagnostics
Controller Area Network (CAN) is an electronic standard to allow high speed communication between modules
and controllers, via a serial data bus. The bus is a circuit linking the modules to the controller, consisting of a
pair of cables, twisted together to reduce electromagnetic interference, and carrying a square wave voltage
signal corresponding to '0's and '1's, coded in such a way as to identify and prioritise the individual messages.
On the Evora, CAN based systems include; engine management, anti-lock braking, safety restraint, instrument
pack and tyre pressure monitoring (where fitted).
A 'stand alone' lap top PC loaded with 'Lotus TechCentre' software allows the CAN based serial data to be
read. Updates and support are accessed via an internet connection.
A Vehicle Communication Device (VCD), part number T000T1476F, is used to connect the vehicle to the lap-
top Lotus TechCentre. Engine programming, live data display, diagnostics of engine, ABS and airbag systems,
and service tell tale lamp resetting (where applicable) are all carried out via the Lotus TechCentre.
The minimum specification of the laptop computer for installation of the Lotus Techcentre is as follows:
Processer 1.70 Ghz;
1 GB RAM;
40 GB HDD;
CDRW DVD ROM;
WIN XP PRO;
USB interface;
Ethernet or Wireless LAN
Note that it is recommended that this laptop be dedicated soley to the Lotus TechCentre, with no other soft-
ware installed. A licensing/support fee will also apply, to be charged monthly or annually.
Section JL
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