2.4.1.6. SCR line heatersΒΆ

Description

The supply module and the DEF hose heaters are a part of the vehicle DeNox system. The system heating temperature is controlled via the engine ECU.

ECU connection

The pin numbers at the ECU:

1.02 Supply module heater low side
1.04 Pressure hose heater low side
1.72 Suction  hose heater low side
1.48 Return hose heater low side

1.50 Suction and Return hose heater high side

1.50 Supply module heater relay control high side
1.93 Supply module heater relay control Low side

The SCR heater pinout is shown in figure The SCR heater connections.

../../_images/SCR_heaters_stageV.png

The SCR heater connections