Checklist Traction Setup

This guide shows the recommend method to configure Traction control system. Clicking each item (M1 Tune v1.5 only) will select the item and allow you to enter the required information. Once an item has been selected the help, for that item, can be displayed by hitting the F1 key.

The Traction system aids power delivery for two- or four-wheel drive by means of engine speed limiting. Compensation for Vehicle Acceleration Lateral may be applied.

The following conditions must all be met for traction control to operate:

• Driver Traction Switch must be on. If no switch is present Driver Traction Switch Mapping Default must be set to On.
• Gear must not be Neutral or Reverse. The Gear system must be operating correctly:
  • Gear Ratio Overall must be valid.
  • Gear must be valid.
• Vehicle Speed must be greater than Traction Activate Vehicle Speed. The Vehicle Speed system must be operating correctly.
• The circumference of the driven wheels as defined by Vehicle Drive Type must be valid ( Wheel Speed Front Circumference and / or Wheel Speed Rear Circumference).
• If Gear Type is H Pattern, the Clutch State must be Engaged.
• Traction Aim Main table should have non-zero percentage slip values.

Traction control operates by limiting Engine Speed to a value which results in a tyre surface speed of the driven wheels of Traction Aim Speed, which is defined as the current Vehicle Speed + Traction Aim Slip.

Traction Engine Speed Limit is therefore calculated from Traction Aim Speed, wheel circumferences of the driven tyres, and Gear Ratio Overall.

BothTraction Engine Speed Limit Ignition Range and Traction Engine Speed Limit Fuel Range are calculated as Traction Range multiplied by Traction Engine Speed Limit. This defines the engine speed range above Traction Engine Speed Limit where either ignition or fuel cut (dependent on Traction Engine Speed Limit Fuel Margin) is progressively applied for engine speed limiting. These values will become Engine Speed Limit Ignition Range and Engine Speed Limit Fuel Range when the Traction system is active.