Engine Control Module (ECM) (Engine management system - Td5)

Engine Control Module (ECM)

The ECM is made from aluminium alloy and is located in the engine compartment on the RH side inner wing. The ECM has an interface of 72 pins via two connectors providing both input information and output control. The ECM receives information from the sensors to inform it of the current state of the engine. The ECM then refers this information to stored values in its memory and makes any changes to the operation of the engine as necessary via the actuators. This is a rolling process and is called adaptive strategy. By using this adaptive strategy the ECM is able to control the engine to give optimum driveability throughout all operating conditions. There is no ECM self test, although the ECM saves driveability data from the last journey. Power down of the ECM can take between 10 seconds and 10 minutes dependent on coolant temperature.