Blower fan, auxiliary heater
| Blower fan, auxiliary heater |
The blower fan is PWM controlled with two speed positions by the control module. Changes in speed occur gradually producing smooth changes and minimizing emission peaks.
| Diagnostics |
When shorted to ground, diagnostic trouble code B0448 is generated.
In case of an open circuit or short circuit to B+, diagnostic trouble code B0452 is generated.
If the fan motor "EMK" ends up outside the permitted range, that is, if the fan is jammed, diagnostic trouble code B0449 is generated.
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