For anyone who wishes to test the engine management on your Landrover TD5, be aware that hand held devices for sale will not work on diesel engine vehicles first used before 2004 as those vehicles are not OBD compliant.
NOTE: Scanners will be advertised as being compatible with 1996 or newer cars and light trucks that are OBDII complient. However, for diesel vehicles in the UK this standard was not introduced until 2004.
The port to plug in such devices can be found in the driver's foot well, to the left hand side underneath the large opening panel.