Automatic gearbox (Stepspeed Em-CVT) (Fluid Cooler): Description and operation

Liquid Crystal Display (LCD)

The LCD is located below the speedometer on the instrument pack. In addition to displaying the odometer and trip meter, the LCD also displays the current gearbox status. The following table shows the characters displayed and their definition.

When the ECM is replaced, the ECM EEPROM re-initialised by TestBook or the gearbox replaced, the LCD alternately flashes ’F’ and the selected mode until the fast adaptation cycle is complete.

Gearbox fault lamp

The gearbox fault lamp is located in the instrument pack and is illuminated by the ECM when a gearbox fault is detected.

If a gearbox fault is detected by the ECM, in addition to the gearbox fault lamp being illuminated, the LCD transmission display is extinguished.

Fluid Cooler

The fluid cooler is located at the front of the vehicle behind the bumper, in front of the engine cooling radiator. The fluid cooler comprises eight horizontal cores which allow fluid to flow across from one side of the cooler to the other. Each core is joined by thin fins which aid heat dissipation.

Two fluid lines from the gearbox, comprising alloy pipes and flexible hoses, provide the feed and return to and from the fluid cooler.

Diagnostics

A diagnostic socket allows the exchange of information between the ECM and TestBook. The diagnostic socket is located in the passenger compartment fusebox which is below the fascia on the driver’s side.