User Manual

Chapter 6

BOSCH HDI EDC 15C2 INJECTION SYSTEM AND PARTICLE FILTER

X - INJECTION ECU (1320) - FEATURE

A - ROLE

The ECU controls all of the injection system.

The ECU software incorporates:

• the functions for controlling injection and depollution,

• the driving pleasure strategies,

• the engine immobiliser function,

• the emergency strategies,

• control of the fan units and warning LEDs (*),

• control of the coolant heating systems for the heater matrix (*),

• diagnostics with fault memorising,

• the cruise control function (*),

• the dialogue with all ECUs of the multiplexed networks.

Note: (*) depending on version.

The ECU electrically operates the following components:

• diesel injectors,

• turbocharging pressure regulation electrovalve,

• high pressure fuel regulator,

• recycling regulation electrovalve,

• pre and post heating unit (post-heating cut-out)

• high pressure fuel pump 3

piston deactivator.

The ECU supplies the following information:

• engine speed: to the instrument panel dials

• instant consumption: to the trip computer,

• air conditioning cut-off,

• coolant heater operation authorisation (depending on version).

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