Structure and inner electrical connection
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Resistors with a positive temperature coefficient (PTC) are designated as PTC resistors. The warmer the PTC becomes, the higher its resistance. With a PTC, high current flows at switch on, for example. With increasing heating, this level of current falls. Metals are PTC conductors. Their resistance increases with rising temperature.
| Index | Explanation |
|---|---|
| 1 | Heating element for engine ventilation heating |
The engine ventilation heating is supplied by the junction box with terminal 15N. The Digital Diesel Electronics (DDE) activate the engine ventilation heating on the ground side.
PIN REFERENCE
| Pin | Explanation |
|---|---|
| Kl. 15N | Voltage supply, terminal 15N |
| Kl. 31E | Activation (ground), engine ventilation heating |