A/C - Fresh Air Blower is Inoperative
85 Fresh air blower is inoperative
85 13 16
2033596/1
April 19, 2013
Vehicle Information
Condition
The fresh air blower is inoperative. One or more of the following DTCs may be stored in the heating and air conditioning electronics control module
(address word 08):
^ DTC 01844 004 (Control module for fresh air blower J126 No signal/communication)
^ DTC 01644 014 (Control module for fresh air blower J126 Faulty)
^ DTC 01273 009 (Fresh air blower -V2- Open / Short circuit to ground)
^ DTC 01273 006 (Fresh air blower -V2- Short circuit to B+)
Audi A4 Quattro Sedan (8K2) L4-2.0L Turbo (CAEB) Page 690
Technical Background
Malfunctions of the fresh air blower could be caused by one or both of the following root causes:
^ A faulty printed circuit board in the fresh air blower control module, J126.
^ The carbon brushes bind in the brush holder and, as a consequence, lose contact with the motor commutator of the fresh air blower, -V2-.
Production Solution
^ Improved fresh air blower control module, J126.
^ Improved brush assembly has been implemented in production.
Service
If either of the following DTCs are present, replace the fresh air blower control module, J126:
^ DTC 01844004 (Control module for fresh air blower J126 No signal/communication)
^ DTC 01844014 (Control module for fresh air blower J126 Faulty)
-ORIf
either of the following DTCs are present, replace the fresh air blower, -V2-:
^ DTC 01273 009 (Fresh air blower -V2- Open / Short circuit to ground)
^ DTC 01273 006 (Fresh air blower -V2- Short circuit to B+)
If DTCs for both the J126 as well as the V2 are present, replace both the fresh air blower control module, J126 and the fresh air blower, -V2-.
Warranty
Audi A4 Quattro Sedan (8K2) L4-2.0L Turbo (CAEB) Page 691
Required Parts and Tools
Additional Information
All parts and service references provided in this TSB are subject to change and/or removal. Always check with your Parts Department and service
manuals for the latest information.
