Volvo AWD Forum

INDEX FOR 10/2025(CURRENT) INDEX FOR 8/2003

[<<]  [>>]


THREADED THREADED EXPANDED FLAT PRINT ALL
MESSAGES IN THIS THREAD




  REPLY TO THIS MESSAGE    PRINT   SAVE 

1996 Volvo 850: ECC (Electronic Climate Control) Mystery

posted by  onlyVolvo on  Sun Feb 16 22:01 CST 2014
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Thu Jun 26 20:57 CST 2014
[RELATED]

We have a 1996 Volvo 850 non-turbo. Recently, the two lights (REC and AC on the Dashboard Temperature Control Module) began flashing for ~20 seconds. The heater blower no longer functions. The problem allegedly was diagnosed as a faulty Temperature Control Module (which has automatic climate control). After acquiring a replacement Temperature Control Module, we installed it and now have the same problem. We would be thankful to hear about any other possible cause of this problem. We have checked and already ruled out:

blown fuses
bad blower motor

Many thanks,

OnlyVolvo








  •   REPLY TO THIS MESSAGE Replies to this message will be emailed.    PRINT   SAVE 

    1996 Volvo 850: ECC (Electronic Climate Control) Mystery

    posted by  KlausC on  Mon Feb 17 11:36 CST 2014
    Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
    last visit: Fri Oct 24 10:15 CST 2014
    [RELATED]

    Are you saying the blower motor does not work at any speed? How did you test the blower motor?
    What the heck is a temperature control module? Do you mean the ECC control box with the temp dials? Or the resistor mounted to the left of the blower?

    There are a number of codes that will trigger the blinking lights of death. But moving the blower speed from auto to something to the right of 0, should activate the blower.







  •   REPLY TO THIS MESSAGE    PRINT   SAVE 

    1996 Volvo 850: ECC (Electronic Climate Control) Mystery

    posted by  hf63 on  Mon Feb 17 11:00 CST 2014
    Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
    last visit: Wed Oct 22 15:19 CST 2014
    [RELATED]

    What happens if you switch the control to manual if no change I check the ECC power stage. This item sits next to the blower. It is basically a variable resistor to vary the ground depending on the fan speed. Cars with automatic climate control vs manual control are different!!!







<< < > >>



©Jarrod Stenberg 1997-2022. All material except where indicated.


All participants agree to these terms.

Brickboard.com is not affiliated with nor sponsored by AB Volvo, Volvo Car Corporation, Volvo Cars of North America, Inc. or Ford Motor Company. Brickboard.com is a Volvo owner/enthusiast site, similar to a club, and does not intend to pose as an official Volvo site. The official Volvo site can be found here.