A/C - Blower Occasionally Inoperative/DTC's Stored

Blower occasionally inoperative

Topic number LI83.30-P-053637

Version 2

Design group 83.30 Air conditioning

Date 05-01-2012

Validity Model series 212, model series 207 (codes 802 and 052 or production date up to 01.12.2011)

Reason for change Fault codes moved to Complaint field

Complaint:
The blower is occasionally inoperative at low outside temperatures after engine start

If the following fault codes are present in the A/C control panel control unit, proceed as per Remedy:

912 F12 The front blower regulator has a malfunction. There is a short circuit to positive.

912 F11 The front blower regulator has a malfunction. There is a short circuit to ground.

912 F49 The front blower regulator has a malfunction. There is an internal electrical fault.

Cause:
Communication error between air conditioning control unit and blower regulator

Remedy:
Install latest software for A/C control panel, version 1102 or higher or Xentry DVD 03/12.

Replacing the blower motor or the blower regulator does not remedy the problem.

Remark:
Affected vehicles up to YoM 11/02 (codes 802 and 052 or production date up to 01.12.2011)





Symptoms