User Manual

Chapter 11

BOSCH HDI EDC 15C2 INJECTION SYSTEM AND PARTICLE FILTER

C - ELECTRICAL FEATURES

Controlled by the fuel additive ECU.

Allocation of connector channels:

• channel 1: (-) low additive level sensor,

• channel 2: (+) low additive level sensor,

• channel 3: additive injection pump 12 volt supply,

• channel 4: additive injection pump earth,

• channel 5: spare,

• channel 6: spare.

D - LOCATION

The pump is submerged in the additive tank.

Note: The pump cannot be separated from the additive tank.

III - LOW ADDITIVE LEVEL SENSOR (1283)

A - ROLE

The sensor informs the additive ECU that the low additive level has been reached

when there is 0.3 litres remaining in the additive tank.

Depending on the information received, the additive ECU informs the fuel

injection ECU.

The injection ECU informs the BSI which requests activation of the following:

• request to flash the service LED on the control panel (*),

• request to display a message on the multifunction screen (*).

Note: 0.3 litres of additive is sufficient to fill up the tank 6 times with 80 litres

of fuel (*).

(*) depending on vehicle equipment.

B - DESCRIPTION

The sensor consists of a thermistor.

The information provided varies, depending on whether the thermistor is in the

additive or in air (minimum level reached).

C - LOCATION

The sensor is incorporated into the additive injection pump.

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