Electronic Fan Module & Cooling Fan Fault 9

Cadillac Forums | Help Us Help You | Advertise | Cadillac Parts | Cadillac News | Cadillac Classifieds

Cadillac Technical Archive | Cadillac Dealers | Cadillac Reviews | Cadillac Dealer Reviews | Cadillac Vendors

CadillacForums.com is the premier Cadillac Forum on the internet. Registered Users do not see the above ads.
+ Reply to Thread
Results 1 to 2 of 2
HT4100 4.1, 4.5, 4.9 Discussion, Electronic Fan Module & Cooling Fan Fault 9 in Cadillac Engine Discussion; I have a 1987 Cadillac Seville. The radio, dash and other lights flashed, I pulled car over, i had to ...
  1. #1
    wilsonwilson is offline Cadillac Owners Member
    Automobile(s): 1987 Seville
    Join Date
    Oct 2006

    Electronic Fan Module & Cooling Fan Fault 9

    I have a 1987 Cadillac Seville. The radio, dash and other lights flashed, I pulled car over, i had to have it jumped to get a couple blocks home. Alternator went out I found, got a new one. Starts, runs peachy but getting Cooling Fan Fault 9. I've changed one before, they harder to find now. could it be anything other than electronic fan module I can fix myself? Because if anyone needs an expert on ONE particular model, '87' Seville, I'm the one to call -grin

    Already Tried:
    took fan module off inspected visually; checked all fuses in dash, under dash, under hood; haven't checked ground by starter or inline fuses (don't really know where they are)

    How would I check continuity on the electronic fan module? (GM OEM #1641400) module assembly.jpg

    Thanx in advance

  2. Remove Advertisements

  3. #2
    carnut is offline Cadillac Owners Master
    Automobile(s): 1999 BMW 740 Il. 2005 Jag XK8, 1988 Mercedes Benz 300 SE
    Join Date
    Feb 2003

    Re: Electronic Fan Module & Cooling Fan Fault 9

    You don't. You swap it out. They usually fail by not allowing all the fan speeds to work. depending on coolant temp or A/C head pressure the module can power low fan up to a higher fan speed. Most times the higher speed wont work and the code sets. They were used on early Allante's, 87/88 Eldo's as well.

  4. Remove Advertisements
    Cadillac Forums

+ Reply to Thread

Quick Reply Quick Reply

Register Now

Please enter the name by which you would like to log-in and be known on this site.

Please enter a password for your user account. Note that passwords are case-sensitive.

Please enter a valid email address for yourself.

What Cadillac(s) do you own? (Or type NONE)

Please select your insurance company (Optional)


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.


Cadillac Posting Rules

  • You may post new threads
  • You may post replies
  • You may not post attachments
  • You may not edit your posts