Electric Power System - Renault Clio Cup User Manual

2010 Release

4.4.4 ELECTRIC POWER SYSTEM

If the unit undergoes a heavy impact or if the vehicle is involved in an accident.
The unit MUST be sent to the Alpine after-sales service.
Transport precautions
The unit must be held in place by the shaft and engine housing.
Handling the unit using the shaft alone can cause significant damage to the torque
sensor and, consequently, can lead to unit malfunction.
Safety recommendation
The EPS system may generate significant forces and rotation speeds, which may in turn
cause injury. It is therefore important to handle it with caution, in accordance with the
maintenance guidelines (see following paragraph) and to return it to the supplier prior to
re-use if it has been damaged.
Maintenance guidelines
 The condition of all of the EPS mechanical components and electrical
connections should be checked after each race.
 A period of at least 20 seconds should be left between general vehicle
power cut-off and EPS disconnection to allow all internal diagnostic
procedures to complete.
 The unit can reach temperatures of 85°C following repeated operations. It
is therefore
disassembling it.
Use
Start-up
-
 Ensure that the EPS is correctly connected to the wiring harness.
 Turn on the vehicle's electrics (button (12) on the control panel; see 1-6
Using the car).
 After a short period of time, the EPS makes a "clicking" noise. This
indicates that the unit is powered up and ready to use.
 Turn the wheel. The EPS should function and the less effort should be
required to turn the wheel.
 For the wheel position sensor to transmit its measurements, it must first
be calibrated. The power steering will function correctly, even if the
sensor has not been calibrated, but angle measurements will not be
available on data acquisition.
 To calibrate the sensor, turn the wheel slowly to the 0° position (this
information is visible from the "Vision" software see 6 Operating
software/Vision). This position is an item of production data and may not
correspond to the vehicle's wheels being straight.
that, when calibrating the sensor for the first time, the wheel must be
rotated 360°(don't turn up to the stop!) in each direction. The 0°
position will then correspond to the straight wheels position. The system
will maintain this calibration as long as the vehicle's electrics are on, but
will require re-calibrating to 0° on each general power cut.
necessary to check
E-36
the unit's temperature
It is for this reason
before