User Manual

Chapter 8

BOSCH HDI EDC 15C2 INJECTION SYSTEM AND PARTICLE FILTER

ENGINE COOLING FUNCTION (FRIC)

(INCORPORATED INTO THE INJECTION ECU)

The injection ECU performs the following functions:

• it switches the fan units on and off (engine cooling),

• it controls post ventilation (for 6 minutes maximum),

• it illuminates the coolant temperature warning LED on the instrument panel,

• it controls the coolant temperature gauge on the instrument panel,

• it performs diagnostics for fan unit operation,

• it acquires the engine coolant temperature,

• it manages downgraded modes.

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