Functionality (From 2003 Model Year Only)
| WARNING | Vehicles not fitted with a differential lock must not be tested on a rolling road where the rollers are driven by the vehicle. |
The differential lock must be engaged for 2 wheel rolling road testing. It will also be necessary to disconnect the propeller shaft from the transfer box output shaft driving the axle whose wheels are NOT on the rolling road. In addition, the Electronic Traction Control (ETC) system must be deactivated by either, removing a fuse (10A fuse 28 in the passenger compartment fusebox, labelled ABS) or disconnecting the ABS modulator pump. This must be done with the ignition switched off. Note that the SLABS ECU may record a system fault.
The lock can be engaged or disengaged using the selector lever.