LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Volkswagen >> 2012 >> Routan SE >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> HVAC DTC Based Diagnostics - Manual Temperature Control >> 00 General, Technical Data >> Manual Temperature Control >> B105B - Recirculation Door Control Circuit Open >> Notes
April 5, 2026: LEMON Manuals is launched! Read the announcement.

B105B - Recirculation Door Control Circuit Open: Notes

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS information.

Theory of Operation 

The A/C heater control drives the recirculation door actuator via the recirculation door driver circuit and the common door driver 2 circuit.

Possible Causes
RECIRCULATION DOOR DRIVER CIRCUIT C32 OPEN
COMMON DOOR DRIVER 2 CIRCUIT C807 OPEN
RECIRCULATION DOOR ACTUATOR
A/C HEATER CONTROL
NOTE:

This DTC must be active for the results of this test to be valid. Do not perform this test if this DTC is stored.