Electronic Engine Controls - TDV6 3.0L Diesel (G2006315): Operation: Notes

WARNING: This page is about a different variant/trim than selected.

The TDV6 3.0L Diesel engine management system is controlled by the Powertrain Control Module (PCM) and is able to monitor, adapt and precisely control the fuel injection and electric throttle. The PCM uses multiple sensor inputs and precision control of actuators to achieve optimum performance during all driving conditions.

The PCM controls fuel delivery to all six cylinders via a common rail injection system. The common rail system uses a fuel rail to accumulate highly pressurized fuel and feed the six, electronically controlled injectors. The fuel rail is located in close proximity to the injectors, which assists in maintaining full system pressure at each injector at all times.

The PCM uses the drive by wire principle for acceleration control. There are no control cables or physical connections between the accelerator pedal and the engine. Accelerator pedal demand is communicated to the PCM by two potentiometers located in the Accelerator Pedal Position (APP) sensor. The PCM uses the two signals to determine the position, rate of movement and direction of movement of the pedal. The PCM then uses this data, along with other engine information from other sensors, to achieve the optimum engine response.

The PCM performs self-diagnostic routines and stores fault codes in its memory. These fault codes and diagnostics can be accessed using approved diagnostic equipment.

If the PCM is to be replaced, the new PCM is supplied blank and must be configured to the vehicle using approved diagnostic equipment. A flash electrically erasable programmable read only memory allows the PCM to be externally configured, using approved diagnostic equipment, with market specific or new tune information. The current engine tune data can be accessed and read using approved diagnostic equipment.

When a new PCM is fitted, it must also be synchronized to other system control modules using approved diagnostic equipment. PCM's cannot be swapped between vehicles as they must be matched with security information to other system modules.